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Ford Taurus | Mercury Sable | Ford Taurus SHO | 1986-2007 Forum for discussion of the Ford Taurus, Mercury Sable and Ford Taurus SHO. Covers vehicle years: 1986-2007

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Old 01-12-2006, 09:53   #1 (permalink)
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1997 SHO code P0171 and P0174

I recently had the spark plugs changed. I replaced the fuel filter. Changed the oil and filter. Because of misfire in cylinder one . Fixed that problem. Then went to start the car, RPM's around 500-800 surging then car dies. Just kept starting it giving it some gas, now the car doesn't die. While driving it at all speeds car hesitates kinda like a little jerking. When u come to a stop the RPM's will stay around 500-800 bouncing up and down. I know what could possilaby know what it could be. MAF sensor. 02 sensors. vacuum leak. Open to any suggestions PLEASE help
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Old 01-13-2006, 20:00   #2 (permalink)
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Re: 1997 Ford SHO code P0171 and P0174

Vacuum leak for sure. Check where the EGR attaches.

Do you have the cams welded?
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