Question about 1996 Ford Taurus

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Fault codePO171and PO174 comes on my 96 ford taurus with a 3.0. I am having drivability problems. Car starts up great ,and as it warms up it starts great ,and as it warmrms up feul pressure starts to drop even though the feul pump was just changed along with anew filter.aventuellyfeul presure shows 0 psi,and no it is not the regulator eather, cause that has been changed to.So?

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System adaptive fuel to lean,(bank 1),and thepo174code issame thing but on (bank 2)

Posted on May 03, 2010

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Sounds like a relay with high resistance on the contacts. it could also be a bad connection somewere in the harness most likely at a connector. when high resistance at a connector or relay is encountered the connection gets worse with the heat produced by the bad connection.

Posted on May 03, 2010

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It sure sounds like the trans is slipping, buy your discription of the problem is not very clear to me, so that may not be the case, I would suggest you have the electronic engine and transmission control module tested for fault codes, if a transmission control solenoid is defective it will have a fault code in the memory of the control Module, which we call a PCM, the coil your friend refers to is a solenoid, if nothing shows up for codes I suggest you have a transmission shop drive the car and give you there opinion, they will do this for free in most cases as they want the job if somethiong is wrong.

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