OH the horror. I have a 1998 ford contour se 4cyl. I am pulling a P1131 and PO171 code. I have fuel pressure between 30 and 45. I have replaced the front O2 sensor the air filter the fuel filter, the spark plugs, cleaned the MAF, replaced intake gaskets and one faulty vacumme hose. Reset the computer and THAT DARN LIGHT came back on! Oh and did teh carb clean test for varience in motor when sprayed over and around vacumme hoses and get no varience. The fuel trim both long and short are at zero. Whats left? Where do I look next to find the problem?
Please note the codes P1131 and PO171 have come back after all of this work and resetting the computer. So again I ask What could it be?
have the same problem?
Friday, July 22nd, 2011 AT 8:51 PM