2004 Mazda MPV Repair Question
2004 Mazda mpv running rough
This engine is known for coil issues....and they are NOT cheap. Best way to diagnose is by part substitution...ie; replace them with known good coils. Bench testing coils, and/or ignition leads is not a sure-fire way to tell if they are faulty.
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Have the spark plugs checked as well.
As to the engine revving higher, check the transmission fluid level.
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Great advice guys. I replaced the ignition coils and so far so good. Removing and replacing plenum assembly was tough but was managable. This seems to have corrected the tach revving higher as well. Thanks Again, Chris
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