Chevy HHR Network
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Chevy HHR Network (https://www.chevyhhr.net/forums/)
-   Maintenance and Upkeep (https://www.chevyhhr.net/forums/maintenance-upkeep-50/)
-   -   Rough Idle P300 (https://www.chevyhhr.net/forums/maintenance-upkeep-50/rough-idle-p300-67248/)

donbrew May 24, 2025 12:04 PM
The engine temp should never be below 179F after it warms up. If it is running 160F-170F the t-stat has failed! Replace wit ACDelco 131-158, no substitution allowed.


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