Idle after warm-up problems
05-14-2011
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Idle after warm-up problems
Hello,
I have a 2003 Civic EX with ~85k miles on it. When I cold start, there is an erratic idle around 1000rpm and after the engine warms up the idle dips down to approximately 400 and stalls unless the AC is running. I cleaned out the throttle body and IAC and couldn't find any vacuum leaks. Upon request of a mechanic, I replaced the IACV but that didn't fix the problem. This leads me to believe a sensor is bad, but the car isn't giving any error codes. I'd appreciate any help or suggestions for what to check next.
I have a 2003 Civic EX with ~85k miles on it. When I cold start, there is an erratic idle around 1000rpm and after the engine warms up the idle dips down to approximately 400 and stalls unless the AC is running. I cleaned out the throttle body and IAC and couldn't find any vacuum leaks. Upon request of a mechanic, I replaced the IACV but that didn't fix the problem. This leads me to believe a sensor is bad, but the car isn't giving any error codes. I'd appreciate any help or suggestions for what to check next.
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