IAC valve problems

IAC valve
IAC valve: It is in charge of regulating the air flow into the engine when the throttle is closed or idling.
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Multiple issues

Honda CR-V 1999 Honda CRV LX 132000 miles
Multiple symptoms, rough starting, engine kills in drive, reverse, idle, neutral... possible ecm/pcm damage due to battery being installed backwards (reverse polarity sparking)
Also possible damage to drive train after car was towed in park on a dolly. IAC valve, O2 sensor, PCV valve, hose leaks, toggle position sensor?
Liac from United States 2 years ago  
LI
1 report 
Liac from United States 2 years ago
Any suggestions? Still unresolved...only code it's throwing (once) was IAC valve. Horrible smelling fuel and smoke when driving even though I had fuel tank drained and fresh oil change. Having it towed to mechanic next week... could be damaged transmission, gear box, drive train, electronic issue, who knows! My gut tells it's a combo of transmission damage and drive train/breaks damage from a bad tow job. Not sure yet.
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