06 LS: stumbling and rough part throttle acceleration
#1
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06 LS: stumbling and rough part throttle acceleration
Hey guys,
I am experiencing roughness when under light and part throttle acceleration. It is most noticeable when going uphill and feels like my car almost stumbles when accelerating lightly. However, when I accelerate anything more than half to full throttle acceleration is smooth and strong with no roughness or stumbling.
My car has 65k miles. Any thoughts what the problem is?
Thanks
I am experiencing roughness when under light and part throttle acceleration. It is most noticeable when going uphill and feels like my car almost stumbles when accelerating lightly. However, when I accelerate anything more than half to full throttle acceleration is smooth and strong with no roughness or stumbling.
My car has 65k miles. Any thoughts what the problem is?
Thanks
#2
you might try cleaning your throttle body and then disconnecting your battery to reset you ecu.
does it seam to be your engine or transmission?,happen every time.
any more information my help.
does it seam to be your engine or transmission?,happen every time.
any more information my help.
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I notice it primarily when the car is in higher gears at low engine speeds under load. Easiest to notice when going up a grade putting a load on the engine. never notice it going downhill.
No check engine light ever. I will do a search on cleaning MAF and throttle body.
Thanks fellas!
#5
first thing i would do go to walmart buy the chevron fuel system cleaner, not the fuel injection one, then on empty tank or 3.4 empty pour bottle in , fill with shell premium gas and respond to me in couple days saying problem solved, all kidding aside 40% of time this will work with a clogged injector
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Did the following and still have the low rpm stumbling:
1. Used several bottles of fuel injector cleaner at the last couple of fuel ups
2. Cleaned the MAF w/ CRC MAF cleaner
3. Cleaned the throttle body w/ CRC throttle body cleaner
4. Disconnected battery to reset ECU
Any other ideas to eliminate the stumbling? As mentioned previously, I notice it mostly when in top gear around 45mph under part throttle going up a grade.
Thanks
1. Used several bottles of fuel injector cleaner at the last couple of fuel ups
2. Cleaned the MAF w/ CRC MAF cleaner
3. Cleaned the throttle body w/ CRC throttle body cleaner
4. Disconnected battery to reset ECU
Any other ideas to eliminate the stumbling? As mentioned previously, I notice it mostly when in top gear around 45mph under part throttle going up a grade.
Thanks
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#8
Could be a bad TPS (which is not good cause i think its integral part with TB assy) or a slow responding 02 sensor. Hopefully its not a VVTi solenoids or anything. Id plug it into a obdII scanner and see the readings while you drive to see whats happening. Id point to the MAF as well, and when cleaning them make sure you are cleaning all the way inside the tube because the element is actually way towards the back hard to spray spot. Make also certain there is no debris or dirt on the element. A single tiny piece of dirt can cause all sorts of false readings.
#9
first thing i would do go to walmart buy the chevron fuel system cleaner, not the fuel injection one, then on empty tank or 3.4 empty pour bottle in , fill with shell premium gas and respond to me in couple days saying problem solved, all kidding aside 40% of time this will work with a clogged injector
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