Revving at 40 mph and rough idle
08-27-2022, 09:44 AM
#11
Member
Join Date: 12-19-2021
Location: Alabama
Posts: 44
You said EVERY car you had driven with OD. Not most or some, but EVERY. If I said that, it would be a large group and it sounds like it would be for you too. I have owned alot of cars too that have OD.
This HHR is the ONLY car I have driven that does this. Maybe all HHRs do it, Idon't know. But it just doesn't seem right to me.
This HHR is the ONLY car I have driven that does this. Maybe all HHRs do it, Idon't know. But it just doesn't seem right to me.
08-27-2022, 09:55 AM
#12
Senior Member
Join Date: 03-29-2022
Location: Davison MI
Posts: 1,079
Wrong post for this but give this one time and it'll fit.
These posts get so side tracked it's amazing. The OP has not responded since the first post and I think we changed subjects at least twice.
Oh well, life goes on.
These posts get so side tracked it's amazing. The OP has not responded since the first post and I think we changed subjects at least twice.
Oh well, life goes on.
08-27-2022, 12:43 PM
#13
Senior Member
Join Date: 12-05-2014
Location: Northern Ohio
Posts: 2,623
"Operating temperature" is when the O2 sensors are ready, not when the coolant reaches a certain temperature. Usually very near the same, especially when you know that the important temp in HHR is 158F not 180F.
What part of "that I have driven with OD" is not clear? That is pretty narrow definition. I did not say "All cars with a transmission". My Mazda does it, several Toyotas I have driven do it. a Nissan did it and both HHRs I have owned did it. It is because there is a clutch in the torque converter involved.
What part of "that I have driven with OD" is not clear? That is pretty narrow definition. I did not say "All cars with a transmission". My Mazda does it, several Toyotas I have driven do it. a Nissan did it and both HHRs I have owned did it. It is because there is a clutch in the torque converter involved.
https://www.chevyhhr.net/forums/prob...15/#post858972
08-27-2022, 08:37 PM
#15
Moderator
Join Date: 01-23-2009
Location: Fredericksburg,VA
Posts: 25,325
You said EVERY car you had driven with OD. Not most or some, but EVERY. If I said that, it would be a large group and it sounds like it would be for you too. I have owned alot of cars too that have OD.
This HHR is the ONLY car I have driven that does this. Maybe all HHRs do it, Idon't know. But it just doesn't seem right to me.
This HHR is the ONLY car I have driven that does this. Maybe all HHRs do it, Idon't know. But it just doesn't seem right to me.
I guess a few truck with 5 speeds might qualify as OD, but they didn't have torque converters.
09-13-2024, 08:07 AM
#16
Member
Join Date: 12-19-2021
Location: Alabama
Posts: 44
I checked my MAF sensor by reading the live data on my OBDII scanner. It was not as responsive as I thought it should be, so I changed the MAF sensor. I drove it last night after I changed it and it seemed to help and I was hopeful. This morning on my way to work, it is doing it again. Maybe not as severe as before. Maybe its just wishful thinking on my part.
Here is a YT video showing the issue.
Here is a YT video showing the issue.
Last edited by KArthur; 09-13-2024 at 03:11 PM.
09-13-2024, 09:32 AM
#17
Platinum Member
Join Date: 12-06-2009
Location: Alabama
Posts: 11,365
Torque converter seems to be locking/unlocking. Run a scanner and check the transmission and TC functions.
I chased that same thing on my Dodge truck for 5 years ! Grounds, speed sensor, TPS, new alternator replaced . Nothing worked. Mine finally fixed itself 6 months ago. Weird.
I chased that same thing on my Dodge truck for 5 years ! Grounds, speed sensor, TPS, new alternator replaced . Nothing worked. Mine finally fixed itself 6 months ago. Weird.
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