The vehicle was able to restart after a few attempts and the check engine indicator remained lit. . The fix: Clean or replace fuel injectors. 2015-2020 Chevrolet Tahoe. While accelerating from a stop, or accelerating from various speeds such as 35 or 55, it will jolt during acceleration as if it is slipping between gears. It would happen quickly and would not be any sort of aggressive sputtering. I have experienced no SES lights. Dec 25, 2011 This just started when I step on the gas, the truck responds but i feel a surging motion, and it picks up speed really slow. if you t in off the supply line in the back of the throttle body it should be 9-11psi, but if your truck is surging at idle i would check for a vacum leak, and check over the basics like timing, check the cap (make sure the contact points ware the rotor meets are good) Surging and high idle on 94 silverado. When one or more of these variables is off it can lead to a rough idling condition. A bad manifold absolute pressure (MAP) sensor can upset fuel delivery and ignition timing. Lean air-fuel ratio. 8) Bad Ignition Coils or Spark Plug Wires. These trucks were marketed under the GMC and Chevrolet brands, and the C/K included various vehicles, as well as a truck and two SUV models. The new model of the Silverado 1500 heavy-duty pickup truck is a favorite among many individuals that are fond of driving 4WD vehicles. Browse other questions tagged chevrolet fuel-system truck . The contact stated that while driving at an undisclosed speed with the cruise control activated, the turn signal was activated, causing the cruise control to inadvertently deactivate. 1997 GMC Suburban, 7.4L Vortec. . Surging. SPONSORED LINKS Was this answer Poor fuel economy. While driving down the road at a constant speed the truck feels like it has a surge to it or a jerk back and fourth sorta like its going forward and backwards while driving a constant speed, if I let off the throttle a little bit or give it a little more it stops but continues again once my speed levels out Even get second gear scratch sometimes, no problem. The vacuum line to the valve must be removed. An idle surge can be caused by multiple phenomena. EGR valve may be stuck open. 11) Ambient Conditions. I have a 1966 chevy nova with a 383 stroker. While driving 40 mph, the engine stalled and the vehicle lost power. Cleaned throttle body with no change in symptoms. An alternative diagnostic for TCC shudder is to road test the vehicle and monitor commanded and actual TCC slip speeds. 9) Faulty Camshaft Position Sensor. Additionally, the warning light failed to illuminate while the high-beam headlights . There is often a backfire or two when this happens. The problem may also be in the fuel system. A few weeks ago, I noticed that very occasionally, after the vehicle was warm, I would see a sudden full RPM dip to 0 while driving down the highway, but then the vehicle would return to normal operation. This started as a surging while driving at constant rpms. The truck DOES NOT REV much higher in 5th than 6th. The fix: Check compression to determine engine condition. - Truck is NOT throwing codes.. At one point it threw a P0174 which is Lean Bank 2..but no longer tripping any codes. First off, 3,000 miles is way too early to start measuring mpg. The contact owns a 2017 Chevrolet Colorado. Both of these can cause hard shifting. The replacement cable comes with all of the cable anchors in the proper locations. Typically (if a filter problem is the cause), the "surging at a stop" happens when there is a sudden dip in line pressure. 7) Bad Spark Plugs. Only show this user. This data is wrong. This is an improvement from 90 reported issues with the 2017 Silverado model. Make sure vacuum line going ot map sensor isn't soft an sucking together. Transmission problems rarely fix themselves and the earlier you do something about it, the cheaper the repair. Most of the time the culprit is going to be the ignition system . Jul 10 2021. When I am driving usually I notice around the speeds of 50-60 mph my car revs up and you can watch the rpm's go up and down. accelerator. Could this be something. Then it got . Depending on your vehicle model, your engine might experience one or more of these performance problems: Rich air-fuel ratio. When we got the car it had a mechanical fuel pump with a electric in line red label holley pump wired into a toggle switch without a fuel pressure regulator. I bought the car brand new in November 2011. - The surges last for just a split second, but as soon as the RPMs . General Motors is facing a class action lawsuit that alleges some of its automatic eight-speed Chevrolet, Cadillac and GMC vehicles have a defect in their transmissions. Along with the erratic idle, the engine has absolutely zero power. 2005 Chevrolet Impala 115,000 mi, Visitor. A new fuel pump will cost you $90 or more. The truck has a NV3500 so the whole truck would surge. Only show this user. Put the spring scale 1/2 way between the alternator and crankshaft pulley, pull on it to 22lbs (10Kg), and check the deflection doesn't exceed 0.453 in (11.5mm). The bounce of the tachometer needle happens when speed is constant under little to no torque, anywhere between 30-58 km/h, the RPM ranges 1300-1800-ish {if I press or release the accelerator slightly the RPMs stay steady, and the bouncing tach needle stays steady}. An alternative diagnostic for TCC shudder is to road test the vehicle and monitor commanded and actual TCC slip speeds. Write to him in care of Drive . 1. August 30, 2019 by Jason. Replace the ect sensor if still a problem then scan for codes. You will have to check if the IAC is working or not. turn 50K miles. Common Causes That Lead to Car Surging when Accelerating Usually, there are three leading causes behind car surging when accelerating. 6) Bad Fuel Pump. So far I have changed the spark plugs/wires, ingnition coils, maf sensor, throttle body cleaned, cleaned the fuel injectors and changed the auto control valve,changed the fuel filter. . We had an issue with fouling plugs (due to no fuel pressure regulator . Misfiring happens when one of the cylinders of an engine's combustion cycle fails. You said you know what this was from - please elaborate. Hesitation or surging while driving Lack of power and drivability Check engine light with codes for lean/rich AFR Fuel Pump Repair Solution Replacing the fuel pump is not cheap, so you should be replacing the filter periodically. Hello. "Surging" does not refer to a knocking engine or one that idles rough or stalls. Cleaned throttle body with no change in symptoms. It stumbles as if it's missing a couple of cylinders when you accelerate. 4L80E etc etc. Truck Won't Start: Check the gas gauge to make sure there is fuel. If you let off of the gas coming to a stoplight and it stalls for a second or two and recovers itself, it very well could be a dirty throttle body that is causing the problem. To top I off sometimes at idle gets very rough and will drop to ~3-400 rpms and a low oil light stop engine message comes on. But, the engine seems to start fine and will normally accelerate fine. The fix: Check and replace CV/universal joints as required. Excessive oil consumption is yet another issue that plagues the 5.3 engine. An internal combustion engine needs air, fuel, and spark in order to achieve ignition. The MAF (mass air flow) systems used on many cars measure the amount of air flowing through the engine's throttle valve (throttle body) and use that information to determine how much fuel to inject. The fuel injectors may be dirty. And after the TC engages around the 60 km/h, like it's designed to, the tach . It loses power and idles down. fuel. I thought about the transmission slipping a bit so I. A dirty throttle body can lead to stalling in your Silverado. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in a while to several times in a day. 2014-2019 GMC Sierra. If the engine runs smoothly after this, the IAC is defective and must be replaced. My friend has a 1996 6.5 turbo diesel I'm trying to help him fix. (Page 1 of 3) My Chevrolet truck would idle fine and passed . 1988 GMC k2500 5.7l 350 4wd throttle body doesn't idle but dies after kicking it over in the morning and when it did idle it was not smooth. To top I off sometimes at idle gets very rough and will drop to ~3-400 rpms and a low oil light stop engine message comes on. The 2017 Chevrolet Silverado 1500 has 52 problems reported for surges and jerks. 2017 Chevrolet Silverado 1500. The contact stated that at low speeds of 20-60 mph, the vehicle failed to accelerate with the accelerator pedal . Vehicle has 55k miles on it and ih has been fairly reliable. The check engine light is not coming on and there is no codes available. One note, I do recall when it started happening that I would smell gasoline for a few minutes after starting it while cold. 2. Lastly, engine misfires can come from a loss of vacuum coming from the intake system. 1. The contact owns a 2010 Chevrolet Colorado. Average repair cost is $3,620 at 21,150 miles. Road test the vehicle under light throttle acceleration at 55-65 mph (88-104 km/h) during steady state driving when the transmission is not actively shifting gears and monitor the following GDS2 parameters. This is a sign that your truck's throttle body should be replaced. I have a 94 chevy 1500 5.7l throttle body fuel injection. Surgeing. I have noticed that when this is happening I'm idoling at about 2200rpms, and then the rpm's drop to about 1900 or so, then "surges" back up to 2200rpms. 10) Low Cylinder Compression. I have a 2000 Silverado 4X4 Z71 5.3L that surges between 40-50 mph. 2021 Chevy Silverado 1500- Overview. I have a 1992 Chevrolet Z28 5.7 liter V8- The problem is what migration_judge_joy was saying is true but it also included the black cylinder that's balancing the air (oxygen) and gas at the same time. 4.3L Vortec ICV and TPS Failure. roonie 05-03-2012, 06:00 PM just thought i would post back with what i found. If it does, readjust so that deflection is in the range 0.28-0.31 in (7-8 mm) for a used belt or 0.256- 0.295 (6.5- 7.5mm) in for a new belt. Transmission not locking up (or slipping) Vacuum leak EGR valve stuck open Diagnosis with GDS2. I can hear the engine surging it is very noticeable, nothing imagined. Your cruise surge can be because your jetting is borderline too lean. SES is on due to cats, but is not flashing for misfire. 2017-2019 GMC Canyon. - It only does it while I am trying to hold a constant speed (not accelerating / decelerating. Transmission, Electrical System, and Exterior lighting issues among the top complaints received by the NHTSA from vehicle owners. I keep mine in 5th in city driving. However, more 2019 Silverado transmission problems may get reported as the trucks pass the 100,000-mile mark. The switch to winter formulation gas can make a borderline mix go a bit lean. Report. I use Mobile 1 5W-30 Full Syn and Mobile 1 filter. Took to a dealer and they stated nothing is wrong with vehicle.they suggested to clean the injectors. Apr 30, 2009 My 1999 silverado with the 5.3 engine. While driving down the highway, without cruise control on, my truck sometimes surges, or seems to loose power for a moment and then catches back up. According to these lawsuits, the Chevy Shake appears in these affected vehicles: 2014-2019 Chevrolet Silverado. - The tachometer shows the engine surging <i>up</i> about 1-200 rpm. The surge follows what appears to be a dead spot or flat. In areas where an idle emissions test is performed, failure is likely. Sep 5, 2007 (Edited) Re: 95 Chevy S-10 4.3L TBI - Idle troubles. The problem may involve an annoying change (up/down) of engine speed while cruising at a steady pace, a low drop (or even cut-out) at idle or when approaching a stop, a wild high engine speed of several thousand rpm followed by a drop to near zero, etc. My truck bogs down (and tries to die) when I give it gas to accelerate off of a stop. Report. 2005 Chevrolet Impala 149,000 mi, Visitor. - The truck has a rough idle, almost as if it has an aggressive cam, idle sits around 550rpm . Here's the specifics: - It only seems to do it between 30-50 mph. Second, it can be due to faulty torque converters. The idle control valve sits on the throttle body and is responsible for adjusting the . Sometimes hesitates to accelerate. The fix: Replace EGR valve. Drive axles may be loose or worn. Look also at the truck distributor and clean off the spark plugs and wires. Vacuum leaks can cause surging on some engines, but it depends on the type of fuel injection system. I've noticed that while drivingnat a stable speed, for example, 50mph at 2k rpm, the car slightly revs up and down. While driving at a steady speed, the engine seems to "speed up" slightly or it seems to miss and buck. I figured out how to induce it by letting off the gas and quickly giving it 1/4 throttle and about half the time this will cause the engine to surge. Replacing the belt often eliminates the surge, and ensures better AC operation. pressure while driving when I stop at a red light the needle drops to zero and stays there until I give it little throttle it the . If you let off of the gas coming to a stoplight and it stalls for a second or two and recovers itself, it very well could be a dirty throttle body that is causing the problem. To engage partial (or full) TCC lockup, the fluid flow is reversed. Here's a great YouTube video from EricTheCarGuy. The car jerks when driving, especially when accelerating. The truck has 176k miles and already has a bad sending unit cuz the gague sometimes does not read. Brad Bergholdt is an automotive technology instructor at Evergreen Valley College in San Jose. After about 10 min of this the service engine light comes on and throws an o2 sensor. In its motion to dismiss, GM zeroed in on each of the plaintiffs . My ford f-150 the rpm gose . There is not check engine lights on. Hello. 1 Answer. If moving at a steady speed, and I give the truck . Faulty Crankshaft Position Sensor. I am having a surging issue. Bad Belt: One often overlooked cause of a car surging with the AC on is actually a worn compressor belt. I have a 2012 with ~92K miles on it. If you have installed a Fuel Injection system in your vehicle and are having some initial issues here is a quick checklist to work from to get you started. spot in acceleration, almost like the engine is not receiving enough. This places significant strain on the engine and the AC system. Hi all- I have a 98 Chevy C2500 pickup (5.7L Vortec 350) that I am having a real frustrating time with. If an engine is not getting enough fuel (this is called "running lean"), due to fuel pressure (regulated by the fuel pump and regulator),. The check engine indicator illuminated. It acts like a dirty or clogged fuel filter or a slip in the tranny. I started losing oil pressure every once in awhile a couple months ago . I have a 2007 Chevy silverado truck with 225000 miles on it . Customer complaint bad gas mileage and a surging condition at idle, sometimes. 6 Causes of Car Turns Off While Driving. why is my tac surging up and down while driving at 35 mph? NO reason to have the truck shift to V4 for a very short distance. A dirty throttle body can lead to stalling in your Silverado. Road test the vehicle under light throttle acceleration at 55-65 mph (88-104 km/h) during steady state driving when the transmission is not actively shifting gears and monitor the following GDS2 parameters. The idle control valve ("ICV") and throttle position sensors ("TPS") are prone to failure on all 4.3 engines, which can result in poor idling, engine stalling, bad acceleration, and other low-rpm running problems.