The wiring to one of my fuel injectors was cut,i found a 2002 mountaineer and cut the wiring to the same injector and spliced it to my mountaineer and now my engine does not stall anymore when applying the brakes.the question now is why does my engine idle high at every start?sometimes on the highway when coming to a complete stop it will still be idling high and then with in a couple seconds it will return back to normal
013 Idle Speed Problems PCM Test
007 Idle Speed Problems Scan Data for Idle
test don't guess .
SOURCE: engine stalls after cold start-up & release from high speed idle
I had a similar problem. I found the filter cartridge below the pcv valve had carboned up, and after the crank case pressurized, oil was forced out the pcv supply line to the throttle body. The idle air control valve solenoid got oil in it and caused my problem, but only when it was cold. The pcv cartridge is accessed by removing the pcv valve and the rubber fitting that the pcv valve mounts in. It can then be fished out with a pick set, and it is a pain because you can't see it, but you can get you hand back there. I hope this helps you.
SOURCE: 95 Chevy Blazer 4.3 white smoke at idle
my 1988 chevy blazer 4x4 smokes on cold starts till it warms up then it goes away what is causing it
SOURCE: High engine idle 94 Mercury Cougar
replace throttle body gasket. first check to see if carbon has built up around the throttle valves in throttle body if so remove and clean it with throttle body cleaner.and a old tooth brush. besure to remove all electrical components or any thing that plastic or rubber the cleaner will destroy it.
SOURCE: rough idle when start, or stop at trafic light,
a vacuum leak on the engine somewhere can cause this symptom
SOURCE: 1989 Mercury Sable GS 3.0L runs rough and idles down and stalls
Sounds like you might have a stuck open EGR valve. Is the check engine light on. I would replace the fuel filter if it hasn't been replaced, also check the air filter.
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