Question about 2002 Ford Taurus
He may not have fixed the idle sencer if it s having you two foot it
Posted on Oct 22, 2013
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Posted on Jan 02, 2017
check on the rear of the engine below the throttlebody area there is a vacuum line that collapses or splits and cause this
Posted on Jun 05, 2009
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
Posted on Jun 14, 2009
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