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Old 10-21-2013, 07:15 PM
ard ard is online now
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Join Date: Mar 2006
Location: Sierra Foothills, California
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without diagnostics, it is impossible to say what's wrong- much less give you a price!

You want to hook it up to a diagnostic computer and look at fuel trims (long and short term) as well as air flows, temperatures (intake, coolant, oil, etc) timing afdvance, etc.

If a sensor is bad and the car is running rich, you will see the DME trying to compensate (and failing, but not enough to trip a CEL)...this will point you to what the issue may be. A car with a sluggish VANOS; a car that is running cool and is stuck in 'open loop' control...all possible causes.

No warranty?

A
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