Quote:
Originally Posted by Kep
I'm not real happy with either suggestion.
A cold coil "works" better than a warm coil. If a coil is cracked (not unusual) it will perform OK while dry and not perform well (or at all) when wet. It would explain the problem in wet conditions but it would be opposite of what to expect in dry cold conditions.
I can't see how dampness would affect the IAC valve at all and I would suspect other idle problems while you were driving if it were "worn out".
Of the two, I tend to lean towards the coil myself. There are static tests that can be run with a multi-meter if you wanted to do that. However, a cracked coil doesn't appear bad until it is wet enough to short out. Might you have a third mechanic available?
Kep
|
Thank you for reply! Now it's pretty confirmed that the problem comes from wet. Because when in a warm raining afternoon, the symptom showed up. But when in dry cold morning, it is ok.
