Engine Performance problem
1989 Ford Tempo 4 cyl Two Wheel Drive Manual 261000 kilometers
My Tempo will not start when it is cold. It doesn t have to be very cold out for it not to start, just around 0 C will do it. If I plug in the block heater for a couple of hours, it starts just fine. I have changed the Engine Coolant Temperature sensor, the Intake Air Charge Temperature sensor, Ignition Module, oxygen sensor, spark plugs, cap, rotor and fuel filter. The fuel pressure readings are 56psi on the initial prime, 50psi running with vacuum, and 58psi with no vacuum. The latest PCM download codes it gave me are 31 on the Continous Memory and 33 and 52 on the Engine Running test. The 31 and the 33 indicate a problem with the EGR valve or EGR control system. The 52 indicates power steering pressure switch out of specified range.
Could the EGR Valve issues cause it not to start when its cold, but start just fine when its warm? The check engine light comes on occasionally but only at idle after a 1 hour trip an the highway. I m running out of ideas.
have the same problem?
Monday, February 8th, 2010 AT 8:31 PM