Rough/Jumpy Idle at stoplights
#1
Rough/Jumpy Idle at stoplights
Okay so I am now experiencing an issue where after driving, regardless of
how long or if engine is hot or cold, occasionally when I stop at a stop light
Gregg (my HHR) will drop in idle speed and act a bit rough, then the RPM will jump
between 500 and 800 for about 2 seconds causing the car to buck slightly,
then it will idle fine. This doesn't happen at every stop usually at least once
during my commute. The engine does not stall out or anything like that. I
did do a
search and found there were a couple people with similar issues but the
posts on those were over a year old. I read a couple different things it could
be such as a grounding issues, dirty throttle body plate, and fouled spark
plugs. I am making a new thread as our cars are approaching ten years old
and would like to know if any of you fellow HHR lovers out there have
experienced and had successfully repaired this issue over the years. I read
in the old threads that some people experienced this issue when there HHR
had as little as 13000 miles
2006 HHR 2.4 2LT with almost 158,000 miles
Thank you all!
how long or if engine is hot or cold, occasionally when I stop at a stop light
Gregg (my HHR) will drop in idle speed and act a bit rough, then the RPM will jump
between 500 and 800 for about 2 seconds causing the car to buck slightly,
then it will idle fine. This doesn't happen at every stop usually at least once
during my commute. The engine does not stall out or anything like that. I
did do a
search and found there were a couple people with similar issues but the
posts on those were over a year old. I read a couple different things it could
be such as a grounding issues, dirty throttle body plate, and fouled spark
plugs. I am making a new thread as our cars are approaching ten years old
and would like to know if any of you fellow HHR lovers out there have
experienced and had successfully repaired this issue over the years. I read
in the old threads that some people experienced this issue when there HHR
had as little as 13000 miles
2006 HHR 2.4 2LT with almost 158,000 miles
Thank you all!
#2
Other things: transmission OD clutch, motor/trans mounts.
There is a clutch in the auto trans. It engages for true OD, functionally disengaging the torque converter. Sometimes the mechanism goes bad.
There is a clutch in the auto trans. It engages for true OD, functionally disengaging the torque converter. Sometimes the mechanism goes bad.
#4
Did you just use good ol Carb/Throttle Body cleaner and a brush or something? Also is our throttle body facing upward? if so how did you stop the gunk from falling in the intake.
Last edited by aradmahogany; 07-22-2015 at 09:26 AM. Reason: misspelling
#6
Will do. I will do this hopefully later today when time permits and let ya know if it works for me! I miss my good old cable throttle body -_-
#8
My only big concern is reading about how people experienced very high and sporadic idle speeds (sometimes up to 3000 RPM!) after doing even a simple throttle body cleaning. I guess it has to do with a relearn procedure or something? Anyone have issues with that? Any special precautions I need to take to avoid that happening? I guess it has to do with the fact that the unit is electronically controlled.
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tiggercross59
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06-26-2014 04:18 PM