Chevrolet - Uplander :: 3.9 Hesitate When Accelerating
Feb 13, 2015
In the morning, when i go to pick up my news paper at local convenience store, the van is running rough and hesitate when accelerating.When i take the van 1 hous later, it will run smoothly and there will be no hesitation and i will be good for the rest of the day.
If i skip the trip to convenience store and the first thing in the morning i do a long trip, let's say 2 hours trip, the van will run rough all the way during those 2 hours.
When the van is running rough it will stay in this state until it's turned off, wait and restarted again.
When the van is running smoothly, it will stay in this state until next morning.
While driving, it never happened that the smooth running engine became running rough and the opposite is also true. It never hapenned while driving that the rough running engine became smooth.
I suspect that at engine start up, a parameter is stored and kept in memory until the car is turned off, wait and restarted again.
DTC code P0336 and P1174
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I have a '08 uplander. transmission & alternator installed within the last 6wks. battery purchased xmas 2010. car starts goes a few blocks then shuts down. Looking to alleviating this problem?
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There is never an issue when the weather is warm, but as soon as the first cold day in September in New York occurs, we usually have to wait 5 minutes or longer to shift the car into reverse or drive.We have taken the car to several repair shops to deal with this nuisance repair, and no one seems to want to investigate.
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I hear a grinding noise from tire area when in motion and when stopping and happens only intermittently. I have taken my 06 chevy uplander to 2 auto repair shops and to a chevy dealership repair shop now and all three say they can't find anything wrong with it. shortly after, the noise happened again but now when it occurs the display screen reads... Service ABS system and service Traction system... when i turn the engine off and back on again the warning is no longer there unless the noise occurs then will read both again.
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I have a 2007 chevrolet uplander. Yesterday it started giving a message of reduced engine power and the engine light comes on.
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I have a 2004 Kia Spectra EX (2.0L Engine) that has begun to sputter and hesitate when I am accelerating, regardless of whether I am accelerating from a standstill or on the highway. It feels like the engine is either not getting enough gas, or that the air/gas mixture is not correct. The car has almost 150,000 miles and we have recently (within last 10,000 miles) changed the spark plugs and air filters. Where to begin looking? The car, from what I can find, does not have a PCV; otherwise, that would be my first suspicion.
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I've been commuting roughly 100 miles round trip daily for work for the past month or so and other than the need for an oil change (I'm at about 6,000 since the last one, current mileage is 171900), my 98 Bravada has been fine. However, this evening when I was about half-way home, I noticed the car was getting a little resistance on accelerating.
I had wondered if it was the wind and rain I was driving through, but the tachometer was jumping regularly, it was in the lower ranges (between 1-2, maybe a jump to 3). I was still able to maintain speed (up to 60mph, and a struggle to get to 65 - somewhat unusual) - however there was noticeable resistance to acceleration. Once I got home I noticed that the temp gauge was showing less than 150 and the oil was fluctuating between 1/4 and 1/2.
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I bought New Camry 2014.5 LE. Most of time, my wife drives for short commutes to train stations and work. Its been 1.5 year and it still has less than $10K miles.
I feel it hesitates when I push the accelerator all the way quickly, then jerks. The engine revs up the moment I step on the accelerator but it hesitates before it actually picks up speed. If I step on the gas gradually, its fine.
I have Rav4 (4 Cyc) which does not behave this way.
I took the dealership and asked about it. The tech says it is drive by wire system so unlike old cars, which respond very quickly, may hesitate and considered normal. Some online article says the car's software learns a driving habit so it depends on the driver too but many other postings also suggest its a software glitch.
Is it really normal, a feature of 6 speed or is there a technical service bulletin addressing this issue so that I can show to the tech? Eco mode is turned off.
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My car now has a little over 370,000 miles on her. The other day I noticed a hesitation while accelerating, like an instant loss of power/ jerk. It didn't do it much at first and the higher the RPM's the less it seemed to do this. Once I got the car up to 60/70 mph it was pretty much unnoticeable.
What it was. Thought maybe a vacuum leak. Nope. Maybe a bad TPS or CPS (didn't end up checking those), Thought maybe a bad injector or O2 sensor (didn't end up checking those either). I did try some fuel injector cleaner though but saw no change. I had a feeling it had to be a sensor or something because the motor itself runs great other than the intermittent misfire.
So I drive it in to work this morning. (1 hour drive each way) and aside from the minor hesitation/bucking/jerking while accelerating, everything went pretty smooth so long as I had the car up to highway speeds. So I get off from work and start driving home. The problem seemed to have disappeared completely for the first 3 or 4 miles, then all of a sudden it started up again. Only this time it had gotten much worse.
I could no longer get the car to go over 70mph and when I came to a stop the car sounded like it wanted to die (but never did). It took forever from a complete stop to get past all of the sputtering and hesitation/missing to get the car up to speed. It would keep cutting in and out (the motor bogging down, then gaining normal power for a second or two and so on and so forth). So I decide to take it to a shop to see if they can diagnose it.
The guy hooks up his code reader and looks at the car for a little bit out in the parking lot. All he could do was suggest to change the spark plugs and said that that was where he would start. So I went ahead and listened to what he said about the spark plugs (even though I knew there wasn't anything wrong with them because I had just changed them about a year ago). So I'm changing them out and when I take out cylinder 1's coilpack I notice it's wet. It seems somehow water or moisture had gotten down into there. So I dried everything off and changed the plug (the old one looked fine but I changed it anyway) and I went ahead and changed out all the rest of the plugs too (they all looked fine as well)
So after seeing the water around the #1 spark plug and coil pack, The injectors are right in front of there, so I decided to take the plug off the injector and take a look.
Sure enough, I took the plug off of the injector right in front of the #1 spark plug (far left spark plug) and wouldn't you know it, it had water down inside of it. I pulled the plug off of the injector next to it and it had water in it too (but not as much). How water could have gotten down in there but it did. I took a Q-tip and used it to dry up all the water down in there. Put everything back together and took it for a spin and everything was back to normal.
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So my dads truck is a 87 2.2 throttle body 4cyl and it cuts out and dies while accelerating and I have no clue what is going on we are thinking bad fuel filter or starving for air....
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I have a 1994 V6 Chevrolet Camaro with ~197K miles. Recently I have noticed that after starting the engine it idles rougher than normal and also as I accelerate, especially between 45 and 65 mph. Several things have just been replaced and/or fixed: spark plugs, spark plug cables, oil, coil packs, water pump, & thermostat. I regularly use premium gasoline and when for some reason a lower octane is used I add an octane booster. Since this problem arose I tried a fuel system cleaner; it hasn't worked thus far. The last time something like this happened, I took my Camaro to a trusted repair shop and when being diagnosed its' cylinder chambers and many different lines flooded with fuel. After replacing the fuel regulator my car returned to normal.
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