Missfire - have tried almost everything
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Missfire - have tried almost everything
Basic info:
Chevy Cavalier
2.2L ecotec
Automatic
120k miles
Symptoms:
- Stalls at idle with AC on
- jumpy at idle, jerks when in drive
- Cruise control randomly shuts off
- Check engine light, code is random miss fire
What I have REPLACED
- ignition module
- spark plugs
- coil pack
- IACV
What I have checked
-TPS
-MAF
-IAC
-Harness from MAF IAC TPS to ECU
-Compression (it’s good)
-no Vac leaks, checked with smoke machine and can of carb cleaner
-Cleaned all grounds, sanded to shiny metal and put dielectric grease.
Any insight? Much appreciated!
Chevy Cavalier
2.2L ecotec
Automatic
120k miles
Symptoms:
- Stalls at idle with AC on
- jumpy at idle, jerks when in drive
- Cruise control randomly shuts off
- Check engine light, code is random miss fire
What I have REPLACED
- ignition module
- spark plugs
- coil pack
- IACV
What I have checked
-TPS
-MAF
-IAC
-Harness from MAF IAC TPS to ECU
-Compression (it’s good)
-no Vac leaks, checked with smoke machine and can of carb cleaner
-Cleaned all grounds, sanded to shiny metal and put dielectric grease.
Any insight? Much appreciated!
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dhertzog4349
Cavalier
5
Jul 8, 2010 9:14 PM
