Quote:
Originally Posted by Mpgian
one thing to note, the idle surges when its cold and when moving at high speeds out of gear when idling. but when it comes to a stop it calms down to 650rpm's
I cleaned the IACV with brake cleaner, it helped with the surging after it was warm and moving at freeway speeds.
I need to clean the FITV and rebuild it. every morning the car goes to 1500-2k and surges until it warms up. then its fine...
Im wondering if one of these is causing a VAC leak when on the freeway...
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What you just described is the symptoms of a vacuum leak. That will certainly cause bad MPGs. Clean and tighten your FITV and look for any other leaks. While idling spray the all around the intake manifold with carb cleaner. If the idle changes you just found your leak.
I once had a CRX DX. I loved that car. Would get 55mpg highway easy.