2001 ford explorer, dies after stopping, rpm's drop & stalls also often happens after turning, this car now dies at every stop light. As long as i am driving it drives but if i stop or have to slow down to turn, it will die. I changed the idle air control sensor but that wasn't it. Got any suggestions?
Check for vacuum leaks.
Have someone feather the gas pedal while you listen carefully to the engine. If the leak is bad enough you'll probable hear it.
More than likely, it's either a vacuum hose or the o-rings under the intake manifold.
Hope this helps!
SOURCE: 2004 Ford Ranger Low Idle
I figured out what was going on. supposedly on ford rangers the Idle Air Control Valve (IAC Valve) goes bad. i got a trouble code looked it up and sure enough it is the IAC Valve. Under 100 bucks for the part
SOURCE: 2000 ford focus car idled well
have you ck=hecked the crankshaft posisition sensor.if its bad the coil pack wont fire.
SOURCE: 2001 FORD F150 ENGINE SURGES AND DIES AT IDLE
Check all of your vacume lines. If it isn't a vacume line it is most likely the O2 sensor.
SOURCE: My 2002 Ford Taurus will shutter and die when
the idle air control valve is responsible for engine idle.
this is a common failure on ford's. but I don't think yours is bad because it does idle high befor it dies.
you stated you had codes p0171 and p0174 these are lean codes for bank one and two, you said you found a vacuum leak and repaired it, the vacuum leak was mostly likely the cause of the lean codes, however the pcm has calibrated the fueling stategy for this lean mixture, what you need to do is erase the KAM "keep alive memory" this is done by unhooking the negative battery cable for 60 seconds, this is the only way to erase the KAM the $6000.00 machine I use wont even do it.
once the KAM is clean the computer will go into a relearn state and all operating values will be adjusted for the vehicles current condition, during this relearn session the vehicle may have some driveability issues (low or high idle, stalling, poor fuel economy) the relearn should complete within 10 minutes of idling and then 10 minutes of driving.
good luck and keep me updated
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