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• 94 chevy 1500 high idle. 200,000+ miles. Four circuits are used in order to control the IAC valve, allowing a precise amount of air into the intake manifold. Jun 24, 2019 · After trying several other fixes I finally diagnosed and repaired the problem part. Mar 30, 2008 · My truck likes to idle about 1000-1500rpm cold and 900-1000warm. Once at a stop, it is around 1,000 RPM then eventually settles down. When the engine is cold, it runs as smooth as glass, but when the engine starts to get warm, the idle is rough, as though it has a miss or a stumble. This didn't fix the problem and it continued to idle high. i got alittle problem with it. #1 · Jan 30, 2006. Check the tps also. I have a 1994 GMC Sierra 2500 4x4 with a 1992 454 in it and a 4L80E trans. I do have the check engine light on, codes are reported as a mass air flow Nov 21, 2009 · Sounds like you have an issue with the IAC. it seems to be running at high idle. I am not an expert, I’m a semi professional ama Jul 28, 2010 · When it idles in gear, my voltage is also lower. Sep 27, 2022 · 95 Chevy 350 w/tbi backfiring through tbi. It seems to mainly do it once it gets warm. Often the idle air control valve is only in use when the engine is Jul 11, 2011 · I have a 95 chevy 1500 4x4 5. Sep 3, 2020 · The idle surging will usually go from around 800 to 1500. hard shifts and doesnt want to shift until 3000 rpms on light throttle. I have a high idle problem. I have been told a numerous amount Nov 8, 2015 · Location. Make sure they look good. I had to take it to the local shop and they told me that this happens to alot of the 4. 3L and it help high idle at all times, whether the engine was cold or hot. Remove the wing nut on top of the air cleaner and lift the air cleaner off the throttle body to access the vacuum lines. Mine was doing the same thing and it was the tps. , TEXAS. Wait approximately 30. You can take the air cleaner assembly off so that you see the two injectors. 7/4L60. The surge is like a whup-whup-whup-whup until I add throttle and rev it out. 7 tbi 230k miles 4x4: rough idle intermittently jumps around and has a slight shake to truck/motor. Symptoms you have described do sound like a faulty IAC valve. Hi all, I cleaned the TB on my 4. After my google research I solved the problem. Nov 18, 2008 · Slow idle on cold start/wants to die. com Free App. Question type: General. Sometimes idles perfect, other times it will lope till it dies like a . I have a 2000 Silverado 2500 HD w/6. then, remove and clean the egr valve,,these can get dirty with carbon and not close all the way causing a leak into the intake from the exhaust. Check your connection on the CTS wiring. That said, I love this truck, and despite not running right, it Hi, I Have a 1994 c1500, with a 5. 7l. Check Engine Light comes on Apr 13, 2010 · 350 tbi idling high? Hey guys, lately my truck will randomly kick up the idle in park to around 1200 rpms. Now my truck is a 94 so about the same has your dads. Feb 13, 2013 · using throttle body cleaner and removing the IAC and then clean the parts will help idle issues. If the IAC is operating incorrectly, or not at all, it will cause high idle, no idle, etc. 7. Revving seems normal. For the past few winters when the temperature gets down fairly cold, the truck idles high, even after the truck warms up. 7 liter with 260'000 miles on it. I have a 96 1500 5. #1 · Nov 6, 2013. Wax. I have to really hit the brakes to stop it. For just a few minutes the truck ran fine. LoL. 3 tbi 5 spd 7/9 drop, window tint, system (building new one now), tonneau cover, you know the usuals. Feb 12, 2018 · I have a 1988 Chevrolet V30, 7. <60 degrees outside mine starts then idles @~1,100 then slowly comes down to ~650 in ~30 seconds. You could have damaged terminals causing that issue. 3L Models. Once and a while, it will idle high (1000-1500 rpm) and when it does this, it seems to shift really hard when shifting into gear but The idle air control (IAC) valve controls the idle speed of fuel injected vehicles and takes control of engine rotational speed only when your foot is off the accelerator. 3L died on me. I replaced the Idle Air Control Valve, this seemed to fix the problem. On startup it’s idles way to high and never really drops down. For some reason when its idling it “lopes”. Jan 30, 2024 · If the resistance is outside that range, the idle control motor needs to be replaced. Valve diaphram should only lift above idle with road speed. 0L AWD, 4. 7 TBI This is a very easy fix to possibly remedy your idle problem. hoses) to see if ya have a vaccum leak, if you do; you'll notice your rpm goin up some as soon as the leak will suck in the propane. Hi i am new to this forum and in desperate need of advice. It stalled twice before it finally began to idle properly. 5. Once started, the truck would stall as soon as I shifted into gear. 7L 4x4, Last year of the Full Size 2dr Blazers -. more. Mar 18, 2013 · Hey everyone, Just bought a 2000 chevy silverado. SOURCE: 2003 suburban idles to low. For 2 years i have been battling a high idle issue off and on. When its started cold it reads 60, when its warmed up at cruising speeds of about 55-60mph it reads 40, but as soon as the RPMs drop when I coast, idle, or drive under about 10-15mph (warmed up) the pressure reads 20. The idle air control valve for Chevy C1500 controls the air going into the engine. #1 · Nov 7, 2011. 7L correct oil pressure. In gear it drops to about 13 volts. 98 Silverado k1500 4x4 350. Here are some of the causes of surges, stalls at stops, slow idle speed, erratic idle speed Jul 9, 2017 · I guess I should post a final conclusion just in case someone else has a similar problem. Advice? Jerry Peek. My 2006 Silverado V6 4. When i first start the truck it slowly rises from 1000 to 1500 rpm then comes down after five minutes to 1000 rpm then when i drive it for a few minutes then it starts idling at 1100 rpm Jan 6, 2011 · 1994 TBI idle problem New Distributer, rebuilt throttle body, new IAC new injectors, timing setPROPERLY. 7L Vortec with 130,000 miles. 122. Now you can spray propane around all the gaskets (throttle body,intake,vac. #1. Mar 17, 2004 · I had the same problem. 69K views 9 years ago. Coolant temp sensor (wiring, connection, the sensor is bad). If I try to take off before the idle smooths out she will sputter and die. Once that occurs, the computer should be able to identify the positioning of the throttle plate and adjust the idle after driving for a while. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. for ease of diagnoses my mechanic put an upgraded scanner and physically saw when the brake was pushed the computer didn't read brake activity so we replaced the brake switch and code 38 went away. The three adjustments I made were #1 adjusting initial timing to 12 BTDC, #2 removing the carb, lightly bottoming out the idle mixture screws and then opening them to 1. 7 tbI I have replaced every sensor on. As long as i'm coasting along at a pretty good speed in neutral the engine is turning about 2500-3000 rpm though. Check all the vacuum hoses. BUT. Sep 14, 2011 · Manual says the pressure should be 40 psi at idol, but the gauge is inaccurate. Should be able to set timing by twisting distributor to bring idle back up to a normal range. I use detergent gas, had the throttle body cleaned when I bought it. High ilde and bog down and stalls out in 1995 chevy 1500, 4. (KOEO) If you are make sure that you dont have a leaking fuel injector. 94 GMC Sierra 2500. If the valve fails or has any issues it can cause the idle speed to be thrown off. #7 · Jun 29, 2014. It will start right up and idle ok in park but as soon as I put it into drive it stalls out. The truck will run fine then all of a sudden idle high (1500 - 2000 RPM). If the problem persists, then the throttle motor or throttle position sensor may have been damaged when the cleaning occurred. Apr 11, 2022 · There's no moving parts in the transfer case at idle, only when moving. - 2002 GMC Sierra Denali Quadrasteer 6. I manually idle her up to about 1500 and after a small amount of time she will smooth out then idle like a rock at about 750ish. so i un screwed the IAC from the throttle body and jumped the pins (i think they were the right ones) and it didnt move at all, but my check engine light kept flashing one pause then twice , over and over so i dont know what Jan 21, 2018 · Symptoms: intermittent high idle. You could very Jun 15, 2022 · #1 · Jun 8, 2022. 5 turns out. Mar 26, 2008 · This is the procedure: Jumper pins A&B at. here's a link to th Mar 11, 2012 · TBI 454 surging idle. 1994 k1500 5. I determined the issue to be a vacuum leak, so I replaced my vacuum hoses and checked connections. 7l would not immediately start. 8 posts · Joined 2011. They will also happen during light acceleration when the overdrive is active around 2k RPM when cruising about 50 MPH. i installed a new holley tbi and a reman ecm. #1 · Nov 22, 2015. Jan 31, 2017 · The problem I'm having today is with a 94 Chevy dually with the 454, ever since I bought the truck a few years ago it's always idled fast when it's cold it runs around 1500 and after it warms up it drops to 1100 but nothing will make it idle below 1000, I've put 3 different iac on it, plus a new tps, and pretty much every other sensor you can think of, I've even changed engines in the mean Jan 15, 2022 · There are 4 most common reasons why an engine has a rough, loud, or shaky idle when it is in the parking position or in neutral. . These trucks can start and run with a faulty ECM. Jan 8, 2016 · The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. 70monte Discussion starter. Apr 17, 2016 · High idle can be caused by a number of things: 1. Asked by coyboy350 Jan 05, 2015 at 10:20 PM about the 1994 Chevrolet C/K 1500 Silverado Extended Cab 4WD. 7 vortec engine. all your hoses look good BTW. it. Now that the mornings are getting much colder here, when I start it first thing in the morning Aug 30, 2012 · 1 Answer. Use the command in the scan tool to increase the engine’s idle. 1992 S10 Blazer 4. About two months ago my 1996 GMC C1500 5. ClaytonPS Discussion starter. The idle speed is determined by engine temperature and is controlled by your vehicle's engine control unit. Dec 2, 2014 · If the idle was high prior to you cleaning the TB you may have an intake leak. #8. Subscribed. Apr 2, 2013 · This morning I cranked it up and the idle was very rough between 1-2500 RPM, bouncing back and forth. Posted on Nov 15, 2008. 2. it pukes & falls on … read more May 19, 2012 · 1994 Suburban 5. intermittent surging at idle. It has a ton of power and will roast the tires if you Oct 29, 2018 · I think thats it. with a stock or stage 1 prom chip the engine runs the same: high idle & no throttle response. There is no CEL showing. 3 and ever since then the idle has been jacked up. 7 TBI in for inspection today, and she failed emissions - badly! The guy at the inspection station didn't put it up on the dyno (says he doesn't put trucks heavier than 1/2 ton on it), just did the two-speed test on it where they run it at around 2200-2800 RPM then at idle, testing emissions at both of those engine speeds. 92 Silverado. 400rpm and has a slight stutter. When it gets to operating temperature and the idle drops more it is more noticeable. So, today we took a pressure gauge and checked the fuel pump. After installing the rebuilt engine, I started immediately having Mar 27, 2017 · High Idle. just purchased, was told it had been rebuilt, used a mild performance cam. Look on both the connector side and sensor side. I use a tooth brush and a cloth to clean and wipe out the carbon deposits as much as possible. Once I start driving, the volts go back up to about 13. New PCV , good cap/rotor/wires/plugs, 6500 miles on new engine ( Flat tops eddelbrock 3702 cam, 3 angle valve job, headers hi flow cat glass pack) new oxygen sensor. I replaced the map sensor, the plug wires, the spark plugs, the rotor and cap, and the ignition coil. Oct 8, 2010 · 5. Especially when it's been driven - shut down for an hour - and restarted. i have misted around the intake with starting fluid with Feb 27, 2008 · EGR valve is exhaust gas recirculation valve. Nov 7, 2011 · daudrey5 Discussion starter. seconds and unplug the IAC connector. 1994 s10 ext cab 4. i changed the plugs again and found them to be pretty Jun 14, 2013 · Joseph. If I put in drive and try to keep it running the rpms will just go up and down hard then stall out. It turned out to be the ignition control module. Feb 15, 2005 · Feb 15, 2005. Start the engine, or attempt to start. Use a bidirectional scan tool to increase idle speed in a Chrysler. the aldl connector. Jul 6, 2019 · Really high idle and not shifting. It may or may not start. The motor is out of an 88 1 ton pickup and is in a 89 1/2 ton suburban. 7 350 TBI. Just low idle at. 7 engine. IAC valve. #1 · Apr 22, 2011. xJCross Discussion starter. Circuit Description. Check the EGR by letting the engine idle and open the valve with your finger or a vacuum tester. Make sure there's no damage or corrosion. Except, you didnt say whether the engine was hot or cold. 7L engine. If it isn't surging at idle, the idle will still be very rough and the car shakes a bit. Ask Your Own Chevy Question. TBI is surging with steady part throttle in open loop when cold. While cold with the idle still on the high side it seems smooth and normal. 5 seconds) in the ~1000-1250 rpm range Idle issue on 1994 Chevy Silverado 1500 5. Took it to the shop, check on it in AM. I have a 1993 Chevrolet C1500 with a TBI 5. The whine manifests as the engine begins to rev up and falls away (after 0. This happens sometimes when I am at a stop sign and sometimes when I start the truck. 7L 145,000mils. May 28, 2023 · Using a wrench, remove the IAC valve by turning it counter-clockwise (loosen) and remove the valve. It does not do this constantly, but I would say almost the majority of the time. I think this has nothing to do with the problems but thought y’all should know in case. 14 posts · Joined 2014. What may be happening is an issue with the Chevrolet C1500 idle air control valve, so turn to AutoZone when you need a top-notch replacement part. I have a 93' Chevy 1500 Pickup, 4. A faulty alternator can fast idle issues; if so, replace it. SPONSORED LINKS. In this case, it will detonate, then be fine Apr 18, 2019 · This is a video about rough acceleration rough idle low idle and possible stalling Dec 25, 2018 · She smells very rich as well. the PCV and the crankcase hoses need to be checked/replaced. idle's high i have changed throttle body positioning May 13, 2012 · 94 silverado surges and dies when cold. When under way and I am accelerating, the whine manifests frequently (for 0. 1500 94 has high idle and then slowly drops and stalls. Sunday before last I noticed an extremely high idle in park Apr 6, 2020 · 4. A vacuum leak – this is definitely a serious issue. It will… Apr 8, 2013 · 322 posts · Joined 2009. I have a 1994 suburban that has intermittently been doing some strange things. In park voltage is right at 14 volts. just to summarize 1994 k1500 5. The throttle body gasket had broken and was letting in too much air caus Sep 14, 2017 · 94 chevy c1500 tbi 5. It has 187,000 miles, with a stock 5. 5 to 1. has a throttle body injected, helix carb, with a spacer. There is a variety of strange things going on with this truck, so I thought I would give this forum a try. I also added 2 more negative wires. Aug 19, 2020 · SOLVED: 1993 c1500 5. Sep 21, 2013 · Fuel-----> Ignition-----> Compression. They had to reset my computer. has full power while driving. 3L V6, 209k miles, and a manual transmission. Check the grounds, there are two on the thermostat housing and on on the front driver side head. It started after I cleaned the throttle body. Nov 7, 2015. With the engine idling, grab a propane torch, take the end off and put a rubber hose on the end of the pipe. It reminds me of a hot rod engine with a big cam. Put your finger under the EGR valve and push Dec 4, 2020 · What this does is you add a much larger wire from the alternator positive wire, to the battery positive. Mar 11, 2022 · Step 3 - Engine vacuum is a sealed system and must hold a specific amount to maintain proper idle conditions, inspect the engine vacuum hoses and intake gaskets. Re: high idle with tbi 350 08-23-06 06:35 PM - Post# 989935 In response to bowtie-badboy well i tryed the reset thing and i dont think it worked cause i herd no sounds . Jun 20, 2006 · Jun 19, 2006. I'm the original owner of this truck. If it is connected already then disconnect the IAC valve and listen to the RPMs. #7 · Dec 6, 2014. The control module controls idle speed with an idle air control (IAC) valve. I have a 1994 Chevy C1500, 5. It goes away after I drive it for a minute or it warms up to closed loop. 3L that was put into the s10's. Update: Cleaned out the throttle body, it wasn't too bad inside. There's a fair amount of sludge buildup in the motor and in the valve covers, and the radiator, despite being new already has rust in it. 3 6cyl automatic. Anyways, the truck had always ran very well, started up right away, and it has a good smooth/strong running motor. A vacuum leak in any of the hoses can be the culprit—inspect them all for leaks. about 1500-2000 rpms when in park or neutral. I would think your issue would have to do w/the IAC. Let the idle smooth out first and she is good to go. When you lift it,it delutes air fuel mixture with exhaust. My truck idled high and struggled to accelerate so I finally got around to replacing the idle air control valve. The truck will start and run and will idle but it sounds like it's a hot rod because of the way it lopes. 7L and every time I drive it, my oil pressure is all over the place. Feb 24, 2008 · I started the truck up and it was a super high idle. Turn on the ignition switch. info i was told, assume … May 27, 2019 · changing out the seems like forgotten idle air control on a chevy tbi 04-13-08 04:03 PM - Post# 1410599 So I took the '94 C2500 5. 1 from the case of the alternator to the battery Jan 30, 2006 · 5 posts · Joined 2006. The 4. spray some wd 40 around the intake manifold and see if the idle changes it should be steady throughout. It does this with both old and new TPS Apr 20, 2024 · Jake believes the L5P is the best diesel on the market today. Extra air getting in the engine will speed up the idle. 7 Idle high or low, sometime's dies and affects shifting. But before that, follow RayVoy's instructions, but leave the battery disconnected a lot longer May 19, 2012 · 94 Blazer 4. 3. 5 to 1 seconds) as it reaches into the rpm range I just specified. Last readings were Codes 35 and Code 38. I have a surging idle all the time nearly / rough idle especially when first starting the vehicle after sitting a bit; while occurring Rpm's fluctuates between 500-800 mostly but sometimes however can reach 1000-1100 on the high end of of the rpm oscillation and from what I've noticed from times I paid close attention to it, after If the fuel pressure drops more than 1 psi under 8-10 seconds of full throttle the pump should be changed and dont put the stock TBI pump back in even if your engine is stock. 7 vortec 1996 chev silverado 1500. It idles at right about 900 rpm when warm in park, when it used to be 650 or so. This is normal for old trucks as my sisters car idles the same and she has a 4cylinder. 7 V8. 0 V8 Vortec. 3 Vortec suffers from common problems such as ICV valve and TPS sensor failure, intake manifold leaks, distributor failure, port injection leaks, engine knock, and excessive oil consumption from AFM. #3 · Jun 24, 2013. Put it in neutral idle better, but the RPM gage b … read more Apr 6, 2021 · first, check for a vacuum leak,make sure it doesnt have a bad hose,,,make sure the gasket under the throttle body isnt bad and sucking air,,those gaskets will rot. 7 Flooding on Startup. 94 5. Sent from AutoGuide. I have a 1992 Chevrolet K2500 350 tbi that idles high about 1200 to 1500 rpm sometime's will idle about 800 rpm. I have a 98 GMC sierra with the 5. #4. So make sure that your getting the right amount of fuel pressure with the key on engine off. Then a wire ( much bigger again) to the frame from the battery negative post and 1 more bigger wire from the battery negative post to the engine block. The idle at a stop (at engine temp) lowers to the point of dying, and at times does stalls. I had to give it a little gas to get it started. It's been running good/bad for a few months. 3 W Engine 4X4. Step 4 - The air intake boot or tube is used to deliver air to the intake system of the engine. On TBI engines it is common for the gasket under the TBI unit to leak vacuum. A bad idle-speed control unit can cause the problem; it may need to be replaced. First make sure that the trucks temp is at normal operation. Like. IF I run the ac and headlights it drops to about 12 volts. 3 ltr v6 vortec. In order to Apr 25, 2018 · How to Fix High RPM's and Idle - Throttle Position Sensor Replacement/ rpms too high/ how to lower rpms/ Throttle Position Sensor Replacement Chevy/ rpms to Apr 22, 2011 · 24 posts · Joined 2011. Sep 15, 2011 · When parked and I goose the gas pedal to bring it from idle to ~1500-2000 rpm. It has the 4. try a tap test on the ECM and see if it changes anything. Connect a bidirectional scan tool to the same OBD port you would plug a code scanner into. Mar 16, 2010 · Check the PCV valve for being clogged by pulling it out of the valve cover and putting your thumb over the hole, you should hear the valve snap closed. This motor is the 5. Jan 28, 2020 · #throttlereset #snapon #howto #highidle #gmc #silverado #chevroletDescription: In this video i show you how to lower the rpms on a Chevrolet vehicle using a Jun 3, 2015 · 1994 GMC Sierra - Very Rough Idle and Sluggish Response. Radiator got a hole in it and I recently replaced it. While I was doing my happy dance and patting myself on the back the RPM's slowly climbed, and climbed and climbed until reaching 3500 rpm's and stayed there. Replaced the gasket and put in a new IAC last week. 5 with lights and ac on. Apr 2, 2018 · my 1990 chevy c1500 2wd has a 350/700r4. Twist and pull the vacuum off of the bottom of the air cleaner and lay the air cleaner aside. Check the connection to the IAC, make sure you plugged it back it correctly and all the Nov 6, 2013 · 238 posts · Joined 2011. Generally, carburetor cleaner adds I keep having the code 35 (idle air control valve) on my 94 chevy c1500 5. have changed egr map egr solenoid tps fuel pump rebuilt tbi new - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. The car does not sputter or stall and runs great, just idles so high! 1987-1995 Chevy Idle Air Valve replacement to fix Idle issues on the 5. once the blazer slows down to almost a complete stop the engine falls back to a idle. 86 subscribers. My money is on throttle body base gasket,have seen it many times and is cheap to fix. Remove the air cleaner housing and disconnect all vaccum lines from the air cleaner. 1. I decided to try to repair my head gasket, and mid way through was told by a mechanic that I should just put it back together before I mess it up, So I did. Still had idling issues. motor had igniton timing redone. Motor has 236k on it, and was not well taken care of by the previous owner. If wire connection is loose then reconnect it and see if it helps. A blown fuse – when a fuse blows inside the engine, it could cause the IAC motor to stop working correctly. New to the forum, but I have been a frequent visitor ever since I picked up my 94 GMC Sierra. Mar 4, 2015 · When the motor idles at 600 rpm's, disconnect the IAC, let the motor get cold and see if the motor will idle high again. It isn't usual for your truck to run rough or have issues with backfiring. I am having a strange issue with my 1994 Chevy Silverado. Plug the vacuum lines with golf tees or other suitable item. Aug 12, 2019 · It s/b 9 - 13 PSI (according to GM specs), at idle and under acceleration, preferably 11 - 13PSI. Keep it Professional Grade. Start the truck, turn on AC, lights, radio. I have a 1998 K1500 with the 5. the ECT could be defective @180,ooomi I would replace it. I have a 97 4. 2009 Chevrolet Tahoe 2wd 5. Oct 7, 2018 · Make sure that the ECM can recognize a fault code, tap the block near the knock sensor and see if the ECM sets a code or unplug the ECT in the manifold and see if the ECM sets a code. 7L 350. 1994 Chevy Silverado 1500 2wd Ext Cab 350 cuin TBI in dark Chevy blue. Even coming to a stop you can feel the truck still pushing when slowing down because its idling at 1100 rpm when braking. I have a lawn business and a trailer I have to pull on friday :eyecrzy: Good news is I can use my buddys truck but we cannot figure out what is causing it to idle high? Mar 25, 2023 · A rough idle in a 1994 Chevy 1500 350 fixed using basic tools! If the video was helpful to you be sure to like and help out the channel, thanks! Mar 14, 2021 · This is a tutorial on how to swap out an IAC valve in your 1991 Chevy C1500 pickup. truck has no cats on exhaust, ive replaced the cap, rotor, plugs, plug wires, fuel filter, map sensor, and ive checked the IAC, EGR, MAP. i have a k&n cold air intake on it. 3 weird high idle problem. The truck. Once the engine gets to around 110-120 the rough idle/RPM hunting behavior begins. Could cause high unsteady idle if internal leak but not likely on that type. 7 and I replaced it. A. 10s, K&N FIPK, Blackbear, Dumped Magnaflow, Goodmark Cowl -. Warmed up, slowing down for a stoplight or something, it does not want to idle down. 7 posts · Joined 2013. But it should idle between 3. Now to the too much fuel. If the motor gives you a hard start, lightly press down on the gas pedal start the motor and see if the motor idles high. Trans was rebuilt approx 30-40k ago. any takes on how i can fix my problem. 3L Vortex - The previous owner had a Longblock installed in this blazer, there is approximently 15K miles on this engine according to the shop paper work that replace the motor. The symptoms: The truck starts fine when cold or hot. For the do-it-yourself mechanic May 23, 2014 · I am working on a 1994 chevy 1500 5. 2 Answers. Long story shot, I have it back together, and it runs and starts, but it idles at like 1500 RPM, and sounds way louder and different then it did Feb 7, 2009 · Chevrolet Silverado 1500 1996 chev silverado 1500. Jun 10, 2020 · HIGH IDLE ADVICE. 7 350. Many people spray carb cleaner or WD40 at suspect areas to see if the engine speeds up. This will cause the engine to idle at a higher speed. Put the 1996 Vortec EP381 pump back in. Unplug the connector on the sensor and inspect it very closely. 7 ltr 350 small block. 484 posts · Joined 2008. It also idles rough when the volts drop to 12. Spray it down with carburetor cleaner until it’s clean and then proceed to spray some WD-40 on it for that little added protection. If this tube becomes loose or broken it can leak un-metered air into Mar 25, 2014 · high idle 96 5. Check your Throttle Positioning sensor that should fix your rough idle the TPS controls the breather on the front of the engine its affixed to the right hand side of the throttle body just infront of the spyder on the V6 Vortec 4. Aug 17, 2010 · Squeeze the egr diaphram inwards and see if the idle drops. Hello everyone. I stopped by an auto parts store and had them hook up the code reader and they said it wasnt returning any codes. It bounces a bit to much, when I throw it into gear it wants to die sometimes it ends up dying, it completely dies when I turn on the A/C, I’ve change a lot of common things, like the tps sensor, IAC Then turn on your a/c with a blower in a high position for three minutes. Nov 22, 2015 · 7. This is causing it to slam into gear and run like ****. 2002 Chevy Silverado 1500 z71 106k miles. If the diagnostics showed the IAC valve as being the culprit then inspect the IAC valve wiring to ensure it is connected properly. It's going to be hard to really explain what my '02 5 speed blazer is doing but i'll try to do my best. Anyways, it runs great when your driving it. 7 4L60E 4x4. Next turn the key on but only enough so that your fuel pump turns on. Before the motor was pulled it would stall when put into gear every once in a while, never threw codes, ran perfect other than the stalling. This video was uploaded from an Android phone. MUCH better pump than the EP386 TBI pump. '91 S10 4. These are attached to the bottom of the air cleaner. And I’m having problems with it recently with the idle. You can test it by T-tapping a pressure gauge in line with your oil pressure sending unit, and see if you are actually running the correct pressures. A dirty air filter can also cause a rich condition. A little while ago my service engine soon light came on. A couple years ago, I rebuilt the engine and kept everything bone stock. You can use a soft brush (like a toothbrush) to help with the cleaning. I've seen multiple times the ICM (Ignition Control Module) will wig out once the engine warms up after a while (don't use Chinese junk parts). I thought I might have had a vacuum leak somewhere so I inspected all of my vacuum hoses and Oct 19, 2023 · Surging idle. 3l DOD, 2014 GMC Terrain FWD Step 1. May 1, 2013 · On my way home, the RPMs stayed at about 1500-1600 when in neutral or idle. Even after everything I've done the car still idles at 1500 (nothing helped) when warmed up, but for the first minute after a cold start it idles correctly. The misfires happen warm at WOT. . Then check for vacuum leaks on the throttle body, especially between the tbi and intake. I have a difficult problem that I have been working on for a while now, mabe someone has had this problem. 3L V6. the idle speed is computer controlled and not adjustable, slow idle is caused by a dirty intake, do the following. Jan 18, 2019 · If the computerized engine control system is faulty, high idling can be one symptom. The desired RPM is based on sensor inputs and the actual engine RPM. To recap for my Chevy 350 dying at idle. i have put all new sensors on the engine. This problem happens when it is slightly cooler, like early morning or a cooler night. I own a 94 single cab Chevy 5. It happened to me (among others) with a new Spectra Premium distributor within a couple 1000 miles. I have read nearly every thread on tbi surging idle, code 44's (lean o2), and everything in between. Jan 5, 2015 · 94 Chevy tbi high idle problem. - 1994 K1500 Chevy Blazer Silverado TBI 5. 390. 4, 400 transmission. lm xm ai uk fo pc cs id te ja