Got Durametric Codes. I thought MAF. But not anymore...

[doublesnaggle]

P1319 Misfire emissions-relevant

P1316 Cylinder 4 misfire emissions-relevant

P0123 TP sensor A circuit Signal implausible

Symptoms:

Wiped down dust in engine compartment.

Idled rough after that.

One morning after a long drive, car turned over strong, but not one fire.

Rubbed and touched wires and things in engine compartment. Started right up.

Drove another 800 miles, no problem.

Next day, went around a right turn at 20 MPH, car dies. Pull over, try rubbing wires again. Nothin. Wont start. Try and try for 5 to 8 minutes. Then I unplug the TPS. Starts right up. Drive it home. Turn it off and plug the TPS back in.

Next day turning right into a driveway (at the state emissions test lab no less) car dies. Starts right back up and passes emissions.

Bought the Durametric and those are the codes I get. Not sure if the p0123 was there before I unplugged the TPS.

Need advice what to look for or check now. I cant find the fuel pressure in Durametric, is it in there somewhere?

Edited June 23, 2012 by Loren

[David Clarke]

My 10c is on damaged wiring to one of the ignition coils, and/or possibly even the coil itself.

[doublesnaggle]

Would one coil cutting out stop the engine dead? And not restart? Im very familiar with other cars, and they are drivable with a dead cylinder. Not well, but drivable.

[987_RDC]

Sounds like cracked ignition coil. Remove and inspect, swap it with another coil to confirm. (if fault follows that pack)

[doublesnaggle]

Ok will check and report back.

[wvicary]

One failing ignition coil will not cause the engine to stall or a no start condition. Carefully inspect everything in the engine bay as it sounds like a something is loose or wiring harness worn through.

[xmac]

Not saying it is the problem with your car, but here is a great example of some fine electrical troubleshooting where the problem was found in an unusual place. You may have to follow the bundles to look for frayed/fried/rubbing wires:

http://www.renntech....est#entry138634

...

and here is a link to quickly test a coil pack to make sure it is in spec:

http://www.renntech.org/forums/topic/39900-2000-996-coil-pack-question/

edit: added link

Edited June 25, 2012 by xmac

[doublesnaggle]

Wow thanks xmac!!!! I will do this too.