How do i fix en excessive idling
older post.first off no engine stated. so I WILL TELL YOU WRONG!!!so ill answer in EFI generic form. (pure EFI facts)engine idle races too fast. HOT ! no cold.guess #1, you meant hot, engine., (cold racing is normal)lots of causes. but here they all are, i can in fact find all causes. in 1hr or less, hands on (i have the magic hands) and EFI sa v v y !engine never gets hot , never reaches 180F + and holds, vacuum leaks on MAP based engines all race, so.... vacuum...MAF based engines do not race, they run too slow with vacuum leaks. (unless 2 problems, way too rich and leaks of vacuum)ISC valve stuck open (electric idle controller)IAC valve (thermal valve stuck open hot, it must close hot or the engine screams. hot. or the coolant path is BLOCKED to it...spark timing way too advanced. 5min job. to check. not scanning the PCM is the top failure here, why own any car with OBD2 and not have or rent a scan tool.. ? why work totally blind ? scan it and report ALL DTC errors, now.... and WIN.is this the 3.2L V6? (single or twin cam?)here are all engines in the class car (not all offered in USA)2.3 L 4ZD1 I42.4 L C24SE I4 (GM, Aus)2.4 L C24NE I4 (Euro)2.6 L 4ZE1 I43.1 L LG6 V6 (GM)3.2 L 6VD1/6VD1W V6 (Both single and twin cams options)2.5 L 4JA1 diesel I4 (Cameo, TH)2.8 L 4JB1-T turbo diesel I43.0 L 4JH1-T turbo diesel I43.1 L 4JG2 turbo diesel I4i open the hood and see what?? and engine.the EPA hood sticker tells you the size.and the wide valve cover , twin cams.in most cases, its too much air.after all it can't race if air supply is low.one other cause is previous owner hack jobshacking .he screws the throttle body screw that must never be touched, ever.adding way too much air. that does.The EFI adds fuel to air (math calcs on the fly)and cant be blamed for that.