2001 Ford Taurus 92000 miles

Tiny
LADYNIC73
  • MEMBER
  • 2001 FORD TAURUS
2001 Ford Taurus 92000 miles. I appologize but this is going to be a long one. A few months ago the check engine light came on and when the code was checked it was p1401 autozone said it was something to do with the egr system, but that if it was not causing any problems it could probably wait a while before getting fixed. I had no apparent problems for 2 months but kept checking the code once a week to make sure nothing else came up. 1 month ago it began running very rough. I changed the Plugs, plug wires and was told there was no actual distributor cap and rotor that it was linked to a computer module. It ran fine for a day and began missing again when checking the code it said it was misfiring in the first cylinder. One of the wires had come loose. It continued to run a little rough so I went ahead and changed the egr valve pressure sensor. After changing that the light came on and said the throttle was less than expected and it was acting a little bogged down. It also started making a really bad squealing coming from the pulley system, and the air conditioner stopped working. I changed the throttle pressure sensor because I had dropped it when changing the egr sensor, and the code for the throttle went off but while doing the driving part of the computer reset the rpm began jumping and the check engine light came back on. This time when checking the codes it comes up p1633 which the parts store says they have no information on. Any ideas on what to do next?
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Thursday, June 29th, 2006 AT 8:25 PM

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Tiny
TAURUSWHEEL
  • MEMBER
That code indicates a possible major issue with your pcm unit, could also be caused by loose battery cables, also the kapwr circuit, keep=alive power, could have some issues. I think you should have it professionally diagnosed by the dealer, check battery cables first. Pcm is having some kind of possible power interruption
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Friday, June 30th, 2006 AT 5:51 PM
Tiny
LADYNIC73
  • MEMBER
Well, the next day after I posted this I took the car to Firestone and by the time I got it there it had a strong smell of burnt electrical wires. Come to find out there was a short in the main wiring harness that had been causing all of the problems which finally got bad enough that it melted most of the wiring in the harness and damaged the computer (along with god knows what else). Needless to say this is going to be expensive. Just for future reference is there any way to tell that there is a short in the wiring if it is coming up with codes for other things?
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Saturday, July 1st, 2006 AT 8:12 PM
Tiny
TAURUSWHEEL
  • MEMBER
Sorry to hear about the severeness of your issue. Most of the codes put out all could be caused in some part by resistance, grounding, or voltage issues, usually, but not absolutely, most issues with sensors are the parts themselves failing, however as in your case, other factors can create headaches, large ones. If you're having to replace some major wiring, make sure whoever is doing it has the necessary skills to get it done right the first time.
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Sunday, July 2nd, 2006 AT 12:26 PM

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