July 2014. Dec 5, 2022 · Check The Drive Belt. Disconnect the red/black and black wire leads from the tachometer. The tach should have a +12v for the lights, and a ground as well as a tach Jul 15, 2013 · 526. This is supposed to be an open circuit. Went to start my 2008 24 launch SSV today and none of the dash displays or the perfect pass are coming on. AC reading 0 V (naturally) Engine idling, Yamaha tach reading "7" : DC reading 13. If not all the way down it will work somewhat. Digital tachometers are increasingly common on the market due to their Sep 1, 2009 · I recently changed to a 2001 Yamaha 70 hp motor on my 15' Skeeter bass boat. Is there a way to test the grey wire to read if I'm getting pulses before I order up a new tach. The fix for both the speedometer and tachometer was to cut open the back between the plastic threads and very back. I did notice a blinking symbol to the left that looks like a battery needs charging. Teleflex Boat Tachometer Gauge | 7000 RPM 3 1/4 Inch Silver Black. Make sure that wire has battery voltage on it going to the gauge. This year when I put the boat on the water, both the Tachometer & Speedometer were not working. Sep 3, 2011 · Sep 3, 2011. Problem: No RPM on the tachometer. Apr 16, 2019 · Hello, My port side Tachometer wasn't working so I ordered a new one, started the engine still didn't work. I have power at the tach, 12 volt input, ground is working, lights in tach work. All connections on the gauges look good. Apr 23, 2009 · I just bought a 2005 21Sport powered by a 2005 Mercury 150hp Saltwater outboard last month. Need troubleshooting tips on my tachometer problems on my 02 Bass Tracker Pro Team 175 Out last weekend and the tachometer just stopped working. Jul 19, 2021 · A tachometer is an instrument that measures the working speed of an engine, typically in revolutions per minute (RPM). The boat started fine and all other accessories operate but for some reason the dash has no power. If the tachometer is still faulty, replace the tachometer. 2. 2 to 14. If neither of the yellow wires from the stator is yellow/gray, and neither is attached to a yellow/gray wire, then attach On a boat, some of the most common types of gauges on the dashboard are the tachometer, fuel, speedometer, trim, voltmeter, oil pressure, and water temperature gauges. It's a 20 pole tach and nothing else works. Only place i was able to get any reading was on the actual spark plug wire. #11. I then bought a brand new Yamaha tachometer thinking my old one was bad even though it worked fine with the Mercury. After a 4 month layup in the boatyard, we launched our Dragonfly 32 tri a couple of weeks ago. Edited May 19, 2017 by Tags Feb 12, 2012 · I have a 1990 Ranger Comanche bass boat 363v series. There are no settings for pulse. I am completely stumped at this point. Jan 2, 2024 · A marine boat tachometer is designed to work in boats with engines running at speeds from 1000 RPMs up to 5000 RPMs, but it may not be accurate for other types of boat motors. Once you have removed the cover, inspect the belt for any signs of damage or wear. Both gauges have the same workings. 2) compatibility issue with an 04 rxp Ecu working with an 04 sportster dash. Panel also contains ignition switch assembly. here's a video of the running test. i have it on a 1986 johnson 28hp spl. check the wire for continuity. With the key off the tach normally sits at about 1000 RPM. Sierra Amega Tachometer BRP System Check Johnson/Evinrude. I see the last line of the pdf says "Tachometer Circuit: Check the ohms resistance between the Grey wire and engine ground. The Tach appears to draw down to zero when I stopped then restarted later. It is commonly used in cars, boats, planes, and other vehicles. Faria made a lot of junk. Connected the tach into the starboard side connector and sure enough the tach works. Ussually a dead tach is caused by a bad rectifier. If still no power then the fault is in the key switch. There is a black ground lead and a gray wire to non regulated output side of alternator. Sep 9, 2014 · Installing a Tachometer on a 1985 Bass Tracker V-17. Messages. Now, find the two (2) yellow wires leading from the stator to that terminal strip. Motor sounds normal and even at WOT, it goes to 5600RPM but motor sounds like normal WOT. 38. If it doesn't it has issues. Where on the engine do I attach the signal wire (Green wire in the picture coming from the Tach) Switch on the rear I'm assuming is for cylinder's 8 - 6 - 4. You can usually bring it back to life by removing it from the boat and sticking it in your airing cupboard for a couple of weeks to dry off completely and then replace one board. And then another blue for illumination. Double-check all the connections Aug 29, 2016 · OK. Where should I start troubleshooting? Thanks in advance. Jun 19, 2019 · It an not be checked with a multimeter, or an oscilloscope. Feb 15, 2020 · If the meter has a frequency measure setting use that, these by default and typically, using the frequency measure setting, usually can read and are spec'd as slow as 0. (I can never remember which way the rpms are off with the wrong setting, and my brain isn't working atm, but I think if it was set at 8cyl it would read 1/2 of actual rpm). In the pilot house the tachs wrok perfectly, they are floscan tachs. To check the charging system start the engine check for charge at the battery with a volt meter. I was running along nicely and noticed the Tach had quit working. Speedometer: 204470322. Your gauge problems may well be related (except for the speedo, which operates by air pressure from a pitot, not electricity in most cases). May 10, 2013 · Well-Known Member. I've only ridden in the boat once just before I bought it. Voltage gauge does nothing, tach is stuck at 10 (doesn’t move), speedo does nothing, temp I think is working oil pressure and fuel bounce to the right when ignition is turned on and the trim gauge responds but slowly. i just put a teleflex tach on my boat and it seems to read too high of rpm. Apr 19, 2016 · Switch the gauge plugs at the YDS connection and see if the problem moves to the other tach. Fortunately, marine gauges are not complicated in their Aug 8, 2011 · Aug 7, 2011. This should work! Tachometer not working. #7. Jun 21, 2015 · Jun 21, 2015. Another thing might be to check to see if the tach has a switch to set it for 4/6/8 cyl. Hz reading unstable ranging ~75 -82. All my gauges work properly except the Tach. May 11, 2013 · Re: 1985 Evinrude 70 Tach not working The tach is an OMC manufactured by Gale Products. With the black wire disconnected, turn the 12 Volt DC power to the gauge on. Some can be disassembled and cleaned, others cannot, requiring complete replacement. " R. I have black - ground, two wires purple and blue on 12V post. 95. Most tachometer gauges have either an analog (dial) or digital (LCD or LED screen) display. If it stays the same look at your tachs wiring. 0 volts, identify which connection is the problem, and correct it. Dec 23, 2022 · This is because the sensors are very sensitive, and they can easily get damaged. A 12V test light will blink while engine is running (pulses). 2002 115 EFI 4-Stroke Model 115ELPT4S Serial OT540017. time to test each. 5/1Hz and up to 200khz w pulse width > 2us. That’s why, tachometer is an important car part that needs to be in fully functional condition. Also check the voltage on the battery + post on the recitifer for 12 volts+. Marine Gauge Components. If the tach is dead, it won't do anything. the engine is a 1990 175 hp Johnson. I expected it to go up to around 14+ volts. Tried again last night, nothing. Faria Boat Diesel Tachometer TD9712A | US Marine D-Tronic 3 1/4 Inch. When running what I think is close to WOT it says approx. There is no sender. Oct 3, 2023 · 1. I understand that Tach damage can be caused by electrical transients disconnecting the battery with the engine running. When you turn the key on it should go to 0. Just make note of the proper setting. 5. AC reading unstable, "bouncing" from ~4. Motor was bought second hand and just switched to this boat. #2. 67 - started the engine and voltage remain basically the same. No readout. The voltmeter reads between 15 and 16v when running over 2000rpms. when the motor is at idle it is reading about 1300-1500 rpm and it is easy to hear the motor is not running that fast. During this process I noticed the wiring harness had two plug-in connectors May 7, 2010 · Re: Tachometer not working I had the same problem with my older inline 6 and I found that I did have power at the stator and so I went to Radio Shack and picked up a rectifier for $3. First boat I have ever owned and no manual or experience; any help would be great. Aug 8, 2014 · 9. Sep 8, 2016 · If the tach is any good, the needle should jump to 3500 to 4500 rpms. I wanted to chime in on that thread but it was closed, hence the new post. This is often accessed through a deck plate placed over the aft end of the tank. 0L) Recently purchased from previous owner with the tachometer not functioning. If fuel injected, the signal comes from the ECM. Apr 30, 2012 · Remove that gray wire that leads to the tachometer. work the switch between all settings a few times, and return it to 6. Note the following part on page 4 of the installation instructions: "1. use the volt meter accross the battery post to see if the recitifier is charging while running, voltage Sep 18, 2014 · A quick check is to simply plug in a another new tachometer as a piece of test equipment. Hopefully one of them is either yellow/gray or is connected to a yellow/gray wire at the terminal strip. I have a 2001 5. Ill show you the EASY test you can do on the water Aug 26, 2010 · 28,769. Dec 12, 2019 · Tachometers not working correctly. Re: Tachometer not working on 5. For boat tacho, boat speed is calculated by multiplying the circumference of the propeller at lower boat speeds. It should also be a single wire, coming off the tach lead on the coil. Jul 22, 2008 · Aug 2, 2008. Tach / RPM gauge isn't working. It is, however, at best a temporary solution. Aug 27, 2017 · New guy here. Inaccurate readings. If the tach does end up being good, in the boat check to make sure there is good continuity on the tach's ground wire to ground, and if that looks good, run a new gray wire from the tach back to the ignition coil. #6. Aug 1, 2006 · 6,469. The tach senses pulses from the ignition system. Jun 17, 2008 · 387. Push it on and off a few times. When I turn the switch on, I still have the Apr 28, 2016 · Boat: 2003 Malibu XTI. Boat Tachometers - Since 1998, iBoats is the most trusted water lifestyle online store for boat parts and accessories, boats for sale, and forums. The gauges do take a while to engage once they have power so make sure you hold the switch in for awhile once ignition is turned on to properly test if this is the culprit or not. Apr 19, 2013 · Start the engine and check the tachometers operation, and if the tachometer operates as it should, then the regulator/rectifier is faulty and will require replacing. Aug 1, 2008 · 372. If some gauges are working and others are not, it will be a connection issue. Sometimes the tach reads properly, and sometimes it reads way high. May 7, 2020 · DO NOT USE AN ALTERNATE GROUND! By doing this, you will be looking at what the tachometer sees for power and ground, combined. Oct 12, 2009. Check the ground wire to be sure it is getting a good ground. Ideas where to start? Apr 22, 2006 · Boston Whaler, 1972-1993, Boat Gel Coat - Spectrum Color Find your boats Gel Coat Match Back Pumps and Plumbing View All Jan 15, 2020 · Here is a quick method of determining whether the fault lies in your boat’s fuel gauge or in the fuel gauge sending unit on the tank. 33 C/S (cycles per second). Aug 1, 2008. Next I took my multi-meter to test the voltage of the battery - 12. One for ground, one for positive, and then each of the stator connections. Apr 11, 2016 · I've reposted the pics from donnyd here. Aug 28, 2010 · Re: Tach not working on pontoon with force motor Gray wire connected to the stator at the rectifier. With Ignition on (but not started), tach can read slightly above zero, once started, it goes completely to zero. A 12 pole alternator produces 6 pules which is what your tach should be set for. Re: Tachometer Not Working. 2V. Aug 10, 2010. When cranking or running needle doesn't move off of zero. They are powered via the engine harness. I have a new to me 1986 225 Four Winns with a 5. then check if ohms change apon reving up your 305 ") if ohms do change then the gauge is probly cooked. If you find that your tachometer is off by a very small amount (such as 2 to 400 rpm), consider what you are comparing it to. $104. Re: Checking a Faria Tachometer. Troubleshooting Tachometer. The fuse may be labeled gauges, clusters, or something similar. Would this be a regulator/rectifier combo or just one or the other? (sorry for the thread hijack) I have a 94 Johnson 120 v4 Looper. Nov 17, 2007 · My engine hours counter stopped working 3 or 4 years ago. Jun 27, 2005 · After about 1 hour underway, the tach stopped. Re: Tohatsu tach Not working! The Tohatsu charging system are so inconsistant on there voltage output that it could have fried the Tach, The Tachs on sevrel of the Tohatsus i have had would go up to 5000RPM at Idel and then hit the stop at 7000RPM once the engine was reved up a bit. Mar 28, 2009 · Mar 28, 2009. 0. It works from water pressure, Sep 8, 2010 · Sep 8, 2010. Oct 12, 2009 · Location. It doesn't matter if the engine has 1 cylinder or 12. The trim, a gauge found only on boats, measures how high the engine is raised or lowered. If it still happens it is either the tach or alternator- NOW you have to spend money. This fuse should have power on both sides with the ignition in the on position. I have been paging through the engine owner's manual with not much luck on where to start troubleshooting. If any part of my answer is confusing, incomplete, or you need more detail on the issue. Feb 16, 2013 · Re: gas, speedometer and rpm gauges not working. 4 - 32. At 800-1000 RPM, check output on the gray wire, reading should be at least 8 volts with a DVA meter. Work on the engine included changing the sail drive bottom seal (7 years old), changing engine and drive oils as well as engine oil and fuel filters, cleaning sea water intake filter and hoses, and May 20, 2010 · Display and gauges not working. Jul 28, 2017. Disconnect the black wire to the sending unit, at the gauge end. I recently bought the boat and the tachometer and fuel gauge do not work. Troubleshooting: If the tachometer does not work after wiring, it is essential to troubleshoot the connections. Just bought a new tach and installed, but not working. See if that helps. 0 mercruiser 230 hp Alpha 1 . I made sure the connections to the back of the Tach were snug. The most obvious problem is when reving up the port engine, the stbd tach show increased revs. My tach, trim and speedometer have never worked on my 2004 gs232 Hurricane. Sep 3, 2019 · Sep 3, 2019. The voltage should be 13. The tach came off a 65 hp Johnson motor. With the key switch ON, measure the voltage betWeen the two wires. I have a Honda 2004 BF225A outboard. Tach is not reseting to zero. but usually boaters don't carry around a spare tach (see below). I have it Jun 29, 2018 · Here is the short version: Tachometer is not working. The prior owner was also giving you bogus information about the sender for the tach. Aug 8, 2014. But you always have the option of calling customer support. Jun 24, 2018 · I recently had problems with all 4 1988 vintage tachometers. $353. Disconnect the orange and blue/red wire leads from the Oct 16, 2011 · The tachometer, speedometer and all of the other gauges are working fine. The tach has a switch on the back that says 4/6/8 cyl. It seems that my RPM gauge is reading 1000 RPM over actual most of the time. In other words, it should be like the leads are not connected to anything. It's white with a digital hour meter. My guess would be the alternator. So I'm good there. The regulator is brand new and the tach did not work before and after changing the regulator. The easiest way is to check the voltage at the battery with the motor off and then check it again with it running. I am incorrect about the "one" lead. Tachometer: 204470321. Run the boat. The hour meter still is running so I would guess there is power. If the tach isn't getting a signal from the engine it will not operate. If it is less than spec then you have a bad rectifier or bad stator. Sep 4, 2011 · BF50 the tach is not working doesn't even budge when key is turned on. 0 Volvo Penta Gxi. You may have to increase RPMs a little to see any change. May 23, 2008 · I have a 2003 4. Obviously this is not accurate. Jun 8, 2011. Next, check the tach signal. I bought a hand held tachometer and wrapped the wire around the grey wire buy the console and got no reading. You'll be down near at 800RPM =13. could be the regulator is dying. Watch the video and leave a like. I have a 2003 Four Winns Horizon 210 with a 5. Source: sailmagazine. Oct 1, 2018 · Identify the correct post on the alternator and jump a wire direct to the tach. Tachometer not working on Yanmar 3YM20. If you have a resistance reading, then one of the coils or one of the leads has a short to ground. Anyone have or had a similar problem? . Leave enough wire at the gauge end to work with. On the engine side of things, if the engine is carbureted, the signal comes from the ignition coils negative terminal (gray wire). That is not good. When turn key on the tach pointer goes well below zero. Sep 6, 2006. #3. Jul 23, 2020 · 2004 Bayliner 175 - Voltage, Tach, Speedo Gauges not working. My needle will NOT go to zero when I turn the key to the on position and it stays there regardless of engine RPM's. The tachs on the bridge are Fariah. it doesn't sound bad at wot and considering it is pushing a Mar 20, 2005 · Re: TACHOMETER NOT WORKING could be a tach. When I pulled into the marina yesterday, I went to record engine hours after shutting down. Tach worked perfectly before it was Apr 13, 2012 · Guages are not generally powered via the boat harness and fuse panel. #15. Hello all, First, my boat: 2003 Monterey Montura LS 248. Check the fuses first. 07-23-2020, 02:17 PM. If the ground is good then you can test the recitifer to see if it is good. How can I check to Aug 19, 2011 · Take one of the leads out of the connector and touch a good ground on the powerhead. If the new tach works properly and the old tach didn't, obviously the old tach is faulty. SeaStar Solutions Eclipse Tachometer 0-7000 RPM. Sep 5, 2021 · Gas gauge not working on your boat? How to fix a gas gauge and sending unit replacement in your BOAT DIY. The meter should run whenever the switch is on. Engine still runs excellent, but I really want to know what would be a possibe cause for this problem and possible ways to troubleshoot/fix this issue Mar 31, 2012 · Obviously if it has been sent in and has come back and still doesn't work you have a charging system issue. What I have done to track it down to try and fix Replaced original Faria Tach with a brand new one (set at 6 poles) With Mar 27, 2023 · Posts: 103. When I turned on the boat navigation lights both would light up but neither of them worked anymore. These are usually a yellow or purple wire (depending on what brand engine you have on your boat). When run power is off needle is straight down and when power is switched on the needle moves to zero. Boat is a 1990 wellcraft 20 sport fish the motor is a 1990 i believe 225 johnson. The gauge cluster is a Travis Edition series. Modern cars are fitted with digital tachometers, instead of the earlier analog dial tachometers. May 12, 2013. There is continuity with the grey wire between the motor and tach. You should see something in the range of approx. Set mine to 4, knowing this is a 4 cylinder engine. Check that tachometer sensors that pick up from the engine flywheel are secure. Outboard tachometers use the pulses from the charging system as the "sense" signal. 7 Mercruiser. Feb 29, 2016 · The tachometer reads about 200 RPM's when idling and 1000 when I have the throttle full. Boat: 2007 Malibu Wakesetter 23 LSV; 2 Dec 2, 2021 · When all of the gauges or warning lights in your car stop working at once, the problem is something that all of the gauges and lights share in common. GLS Stock #: 1004284-AT269. 1200 RPM. The boat starts, runs but the gauges just don't show any life. 1) possible faulty gauge. Key on, engine off: DC reading ~290 mV. 3L Volvo/Penta in a 2002 Chaparral. Radio Shack picture sucks but it has 4 terminals on it. Another potential issue that could be causing your Yamaha outboard tachometer not to work is a damaged drive belt. I have a 2000 Mercury 200 EFI on a 2000 Champion 193DC. Tachometer Gauge To check the tachometer gauge unit, proceed as follows: 1. 3L Mercruiser I/O and my tachometer is stuck and sitting at 2000+- rpms. Re: Mercury 115 outboard 2 stroke tach problem. May 15, 2010 · Re: Tachometer not working I'm running into a similar problem in my boat. This is fairly common on some GM vehicles, particularly mid 2000s pickups. It still didn't work. 33RPS = 13. What would cause this to stop working? Jerry Aug 18, 2015 · Panel has tach with digital hour meter incorporated just below it. I don't think There is anything common among these gauges that would cause them to fail. If it moved your issue is the plug itself or upstream towards the ECU. thoray Member Posts: 6 . I found a cheap, new in box speedo for a Calabria on eBay w Aug 10, 2017 · Aug 10, 2017. Re: Mercruiser 5. I bring this up because it has happened once while the boat was running. Sep 9, 2013 · Sep 9, 2013. If you have a cylinder/pole switch on back of the tachometer you can try to exercise that. Aug 27, 2009 · 64. The Perfect Pass seems to work, but the needle does not move. The bottom line is that fixing the Faria tachometer is often very challenging. Sep 6, 2006 · 12,532. Tach seems to jump a little when trying to start but nothing when engine is running. The same advice applies to temperature sensors. I have taken the boat out on the lake and it runs perfect. The tach, speedometer and trim gauge are not working either. Apr 24, 2010 · I have a 1977 Evinrude, 115hp, model#115793S. at wot it reads almost 6500rpm. I recently bought a used boat and my tachometer/speedometer was not working (stuck at 6000rpm). #1. May 5, 2022 · I noticed the first time I took it out that the speedometer and tachometer were not working. with the port engine stopped, the stbd tach Dec 4, 2020 · Turn off power to the gauge. I just replaced the starter battery yesterday hook all the wires back the way they were hook to the original battery, when I test drive her I notice the tachometer and speedometer was not working. Aug 3, 2006. You may need a partner to complete this simple task, depending upon how you proceed. With the engine running, again use a voltmeter a measure the signal between the ground and signal terminals on the tach. This is a 4. My guess is the signal sent to gauge is in ohms, I would def. There should be 10-16 volts (battery voltage). 33Hz = 13. Check for good ground on the gauge. Step 1: Locate the boat fuel sending unit. A low reading usually indicates a bad regulator if the system is charging the battery. re F225TXRD, measuring Green Tach lead to ground. If not, then check and clean the connection going to the gauges, and re-test. Jun 30, 2016 · Use a voltmeter or 12 V power probe to determine whether you have 12 V going to the gauges when the key switch is turned on. If it has a 12 pole alternator the 6 pulse setting is correct. S. Green is signal wire. Both had worked before the computer issue. Spotsylvania, VA. I know the red wires are positive, Black Negative. Of course the hour meter is digital all of the other gauges are analog besides the depth indicator. I was told the new tach was faulty so I returned it for another and it does the same thing. The gauges are Faria. $39. Don't want to come across as buzz killington here but you can't just mix n match ecus (trust me I've tried). Re: Tachometer Problems. Your wiring may be similarly damaged or they may have some corrosion. Battery is charging nicely. Aug 26, 2009. If 12V is found, jump the pink wire on the gauge to ground, the gauge should peg full, if it does not replace the gauge. This way, whenever you turn the key ON, the gauge receives power and turns on the fuel gauge system. Add to Cart. If not, detennine the cause. Some GM vehicles may have a bad stepper motor that drives the tach needle on the instrument cluster board. What happened is that the plastic tube came in contact with the manifold & melted. When I idle, seems OK (a lttle high occasionally), but when I run at higher speeds it seems to be showing 1000 RPM higher then it should be. If so, connect the gray wire you removed previously to that yellow/gray terminal. If it is wired correctly, check your rectifier. com. Sep 15, 2019 · Learn how to fix a common problem with Faria boat tachometers without damaging them. If neither of the yellow wires from the stator is yellow/gray, and neither is attached to a yellow/gray wire, then attach Apr 27, 2019 · Start the engine and check the tachometers operation, and if the tachometer operates as it should, then the regulator/rectifier is faulty and will require replacing. If these are both present (ignition and signal), you have a bum tach. It need not be properly installed this is a test connection. Feb 27, 2017 · Then unhook the tach connector on the back of the tach. Check wiring and ensure it is secure and not chafing or rubbing on any surfaces. 7 liter mercruiser. Engine - Mercruiser 350 (5. but usually if the voltmeter shows above 13 volts it is the tach. So I began cleaning contacts etc. Re: RPM Gauge does not work Glastron 185. If that didn't fix it? You probably need a new tach. The speedo has a pickup (pitot tube)on the back of the boat. You should read approximately 10K (10,000) ohms. I don't recommend testing on the hose, most will not supply adequate water flow. Pictures aren't really necessary since every gauge except the speedometer needs +12 volts on the "I" terminal when the key is on, ground on the ground terminal, the a signal from the sender (fuel, temperature, trim or whatever) on the "S" terminal. You may have to cut the wire and reconnect it later. This in turn damaged some of the wiring it contained. Also, none of the backlights appear to Jun 8, 2011 · May 22, 2011. In preperation of launching the boat soon I started the engine today (on trailer) and noticed that the tach was not working. Jul 15, 2013 · Jul 15, 2013. Jun 17, 2008. Test the Fuel Sender. 40 mph on that boat seems about right. So the tach isn't the problem, what could be the issue? (2005 Yamaha sx230) Thanks Apr 21, 2009 · When I did this I fully expected the tach to work and point to the rectifier. The gauge needle should perform the following: Aug 30, 2010 · Re: 2001 Yamaha 225hp OX66 - Tach Not Working Not sure of the brand of tach. The tachometer (new) reads fine until 2000 rpms and then goes back to 0 if the throttle is advanced any further. Stepper Motor. Boat and Engine appear to have been built in 1993 sold as a 94. WD-40 in the connector. No miss firing or problems starting. All the other gauges on the dash work. 29. Check battery voltage with engine OFF then again running at 2000 RPM or more while on the water. Mar 28, 2014 · A quick check is to simply plug in a another new tachometer as a piece of test equipment. 3 V. 6. If there is an issue with the power going to the gauge. To check for this, you must disconnect the Tachometer from the engine and take off the cover. The voltage meter on the boat also reads around 12 volts. Get a jumper wire, and a voltmeter. Water Witch Digital Hour Meters, High Water Bilge Alarm, Dual Group 27 AGM Batts. 28. The new Yamaha tachometer doesn't work at all. If battery voltage does not rise then remove the Driving at your tachometer’s red area for long durations may lead to engine failure. It helps in monitoring the engine working condition, its overall health and to diagnose car engine problems, if there are any. It doesn't have one. Working Apr 24, 2017 · Thxs for the pdf link. The takeaway here is: you’ll need to test the sender By connecting the tachometer’s ground wire to a reliable ground source, such as the engine block or the battery negative terminal, you ensure a stable electrical connection and accurate readings. If you measure below 12. Although it turned out not to be a tach problem Faria stuck with me all the way to the end. I replaced the damage sections of wiring & solved the problem. Turn power ON and see if there is 12V on the purple wire. Certainly, this work for a brief while for me. The internal light ("L" terminal) for each gauge Sep 24, 2010 · Gray to red, and gray to the yellow wires should be a high reading, usually in the M range. Sierra Amega Tachometer 7K RPM Gas. the gray lead should have a AC voltage that varies with Engine RPM. #4. A common cause of failure is damage to the sensor head caused by striking the flywheel when it comes loose. Re: tachometer not working with 25 hp Mercury outboard. 13. BrakeOutAnotherThousand said: The grey wire from the coil feeds it. Show per page. Start with generic gauge wiring diagram, courtesy of Silvertip: Apr 4, 2013 · Re: RPM gauge not working. 1. GLS Stock #: 1005835-BF363. Wishlist. How would I determine whether the issue is the sending May 19, 2017 · This happened to our Ride recently. If the tach has +12 volts and ground when the key is on, and the tach signal is present the tach should work. 0 Tachometer troubleshooting: request advice. Re: Mercury Force 1996 115 Tachometer not working. Tohatsu had a special voltage regulator they Jul 28, 2017 · Messages. 1986 Bayliner 45 ft - the tachometers on the bridge are crazy. ;-) Feb 4, 2014 · I have a new to me 1994 Bayliner Capri 1700LS with the Mercury Force 120 (serial # OE0493XX). Other Gauges are working fine. A faulty rectifier wouldn't damage the tachometer, the tachometer simply wouldn't work. Your tach signal wire should go to the coil on the engine rather than the out-drive as it measure the rpm of the engine not the prop. At times the switch can become corroded. Light works and seperate feul gauge works. Oct 11, 2012 · Just noticed that the tachometer on my 23LSV is not working. Jul 21, 2013. The analog portion of the gauges (needle) bounced and would not return home when powered off or sitting still (in the case of the speedo). Posted April 28, 2016. I'm still thinking you have two problems. If tachometer does not work properly on the Gray wire on engines with water cooled voltage regulator, bypass the regulator and attach to yellow/gray wire from the alternator to the rectifier. 40,719. Gas gauge test. I used a dremel grinding wheel. Diagnosing any problem related to boat fuel gauges requires you to be aware of one important fact: Most hitches are caused by the sending unit or fuel sender in the tank, which is usually why any fuel gauge on a boat is not working anymore. If this happens then you will have no other option left and replacing the sensors will be necessary. nftupoqrugkueiiwolib