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Car Forum / Ford / Ford Explorer / November 2007

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How do I tell if my computer is bad?

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McNick - 23 Nov 2007 19:23 GMT
Hey everyone,

I have a '04 Ford Explorer Eddie Bauer 4.6L V8, and whenever I turn the
car on, everything kinda freaks out. All the gages try to go the downward
direction towards the floor starting from the off position or zero. The
radio will change Cd's for a few minutes, and my climate control will
change tempatures from what I had had it programed on, nor will the
exterior temp stay on. The transmission also shifts funny. It seems to do
this whenever the car is cold, but even when warm it will do it every so
often.

So I am coming to conclusion that my computer has to be malfunctioning, as
how in the world could each one of these things all mess up at the same
time...??

Thanks for your help!

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Jim Warman - 24 Nov 2007 05:14 GMT
It is rare for a PCM to fail... even more rare for it to have much effect on
the audio system and the EATC module. Your concern lies somewhere in the
base electrical system....

> Hey everyone,
>
[quoted text clipped - 17 lines]
> http://www.talkaboutautos.com/group/rec.autos.makers.ford.explorer/
> More information at http://www.talkaboutautos.com/faq.html
AS - 24 Nov 2007 18:18 GMT
What do you mean turn on... turn the key to the on position or run the
engine?

Check for a defective battery, cables, or ground connection first.
Defective ignition swith?  Check to see if the output fromt he
alternator is ok or if it has too much ripples (defective diode).

All this problems seem to indicate electrical noise.

Good luck.

> Hey everyone,
>
[quoted text clipped - 16 lines]
> Message posted using http://www.talkaboutautos.com/group/rec.autos.makers.ford.explorer/
> More information at http://www.talkaboutautos.com/faq.html

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