Threeotwo94 said:
Hey guys. Took my car to work and had one of the techs scan my car for any hidden codes since it was running really crappy. He did, and the scanner gave me 542. It said..."ECT to fuel pump ground" Something like that.
Any suggestions. Should i take it to FORD or should i search for this gremlin on my own?
Has this happened to anyone else?
And ive also done a search to see but couldnt find any info that was along the same lines as my problem....Thanks
That codes says fuel pump circuit open, PCM to ground.
what that means is that the computer detected a state in which the fuel pump was either:
1) not passing power through it.
2) The positive wire was disconnected
3) The ground wire was disconnected.
But I have also heard of these codes refered to as "ghost codes", which means there really isn't a problem, but for whatever reason, the code was stored.
What you need to do is get a paper clip and jumper the SIG RTN to the STI, turn the key to start the code flashing sequence, and then pull the paper clip. Pulling the paper clip during code readout clears the codes in the computer. Then go for a test drive and drive it for 10 miles. Re-read the codes, and see if it's there. If it's not there, then forget the 542 code and start from scratch.
Basics, check plugs/wires/cap/rotor, fuel pressure, vacuum, base timing, clean MAF & IAT sensors, & check the ECT sensor. That should keep you busy. But as far as order of ops, you should start with fuel pressure, then clean your MAF/IAT sensors, then the rest.
Scott
