Question about 2005 Ford Taurus SE
I had the spark plug and wire replaced and car ran fine for one day. Next day engine light came on and had coil replaced. Ran fine for one night then engine light came on again with same codes. Had codes cleared and light came back on with same codes. What do I do?
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Posted on Jan 02, 2017
SOURCE: 2002 Ford Taurus ses 24v DOHC
Sounds like when you ran the car out of gas the fuel pump was damaged, these in tank electric fuel pumps are very small and produce allot pressure and volume, the way they do this is to use the gas around them to cool down, when the pump comes out of fuel when the tank is below 1/4 full it starts to get hot very quickly, since your pump was well used (109000 miles) that was the last straw. When you replace the pump also replace the fuel filter.
I would also clean the throttle valve and idle speed control valve, this may be contributing to the low idle complaint, clear the system after the pump and cleaning by disconnecting the battery for a few moments.
Posted on Sep 09, 2008
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
Have you replaced the timing belt? if not i would highly recommend doing so. these cars need to have the timing belt replaced before it breaks otherwise it can and will cause major engine damage.
Posted on Aug 11, 2009
Have the following tests performed : fuel system pressure test cylinder balance test as well as a injector balance test. Preferable an ASE Certified Tech will do the testing.Depending on what he/she says wel'll take it from there. Gotta know why its misfiring before we do anything else. Cat and 02 sensor respond to engine's combustion process
exhaust product.Lets see what the testing says.
Keep me posted
Posted on Mar 29, 2010
Sea foam the vacuum system vacuum in about 10oz seafoam using the brake booster line has larger hose to pour slowly into. Then shut car off for 20 minutes. Then restart under hood hold throttle steady at about 2500rpms look for smoke along the firewall if so u have a vacuum leak that's causing this phenomenon. Intake to the cylinder that is miss firing ad a vac leak. Even a small leak will throw off the crank position sensor every so often especially on cold damp mornings or very humid weather.
Posted on May 14, 2013
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