Fuel pump runs for a few seconds after turning on key. I wasn't aware, but makes perfect since, fuel pump running while cranking engine. I know on Ford Pickups the fuel pump runs for only a few seconds after turning on ignition. So what causes the pump to run for only a few seconds on this car? The Powertrain box? Or is the fuel pump and/or the MFI relay a timed relay?
I finally got car running great, knock on wood. No more codes with the Genisys tester. Still get codes 12 and 55 with ignition key test.
I changed the fuel filter, fuel pump, injectors, IAT sensor, spark plugs, and lastly plug wires. I feel all was needed except for the fuel pump. I put the fuel pump on a vaccum/pressure tester and it tested OK. I had all ready bought the fuel pump and it was so easy to get to. Oh well, thats a do it your selfer! Probably would have spend the same if I toke it to a garage.
Thanks again for the suggestions and help.
Thursday, February 26th, 2009 AT 2:52 PM