Help 2001 Volvo V70
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Joined: Oct 2016
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Help 2001 Volvo V70
Rough Idle
Replaced:
Spark Plugs
Coolant Temperatur Sensor
Variable Timing Solenoid (VVT)
Coils are good
Changed fluids
Cleaned ETM
Have I missed anything.... the vehicle only runs rough when warmed up and driven a few miles
I cannot pass smog check
Replaced:
Spark Plugs
Coolant Temperatur Sensor
Variable Timing Solenoid (VVT)
Coils are good
Changed fluids
Cleaned ETM
Have I missed anything.... the vehicle only runs rough when warmed up and driven a few miles
I cannot pass smog check
Super Moderator
Joined: Mar 2012
Posts: 9,601
Likes: 540
From: Burlington, VT
Which engine do you have?
First is do you have any CEL codes stored? Next is how do you know the coils are good - Did you inspect the connectors as well? Have you failed a smog test already - if so what was off - HCs or NOxs? (too high HCs = running rich, too high NOxs = running lean). Have you tested out the MAF? Tested or cleaned the idle control valve? Inspected for vacuum lines and intake tubes or sprayed around for air leaks?
First is do you have any CEL codes stored? Next is how do you know the coils are good - Did you inspect the connectors as well? Have you failed a smog test already - if so what was off - HCs or NOxs? (too high HCs = running rich, too high NOxs = running lean). Have you tested out the MAF? Tested or cleaned the idle control valve? Inspected for vacuum lines and intake tubes or sprayed around for air leaks?
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