I have a 2008 chevy hhr, starts fine and idles
Have you replaced the spark plugs or coil packs? A lot of times spark plugs will only miss once a load is put on them. Here are some tips to help you narrow it down. All you need is a screw driver and a code reader.
First, is your check engine light on?
----> if yes, try to get the code it is throwing
is the code current?
----> if no
1. Pop the hood
2. Remove the air filter box cover and inspect the filter
---> is the air filter clean?
If no, replace the air filter
If yes, remove the engine cover -
3. Find the fuel rail located toward the back of the engine bay and find all 4 injectors.
Place your thumb over the end of a long flat blade screw driver, place it carefully on each injector, and place your thumb on your ear. With the engine running, listen for fires from the injector
-----> are all 4 injectors firing rapidly at the same rate?
----> if yes, start with replacing all 4 spark plugs
----> if no, replace the fuel injector that is not firing
If yes ---> is the code for an engine misfire?
See above instructions
if no ----> is the code for throttle body position?
if yes ---> Replace the throttle body position sensor and perform the relearn process via tech II scan tool.
These are the most common issues with misfiring with engines, hope it helps or leads you in the right direction.
Oct 01, 2014 |
2008 Chevrolet Hhr