Question about 2003 Ford Expedition

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Blew main computer fuse when changing out my battery to the car and now that we replaced that the car wants to stall all the time. What is going on?

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Well hopefully you didn't do any damage to the computer but there is an adaptive relearn procedure that your vehicle will go through. Some vehicles are worse than others. I'm not sure how long you have been trying to run the vehicle but it does take a little time for your vehicle to learn its idle. You may also want to have any codes pulled from your vehicle that most auto parts stores will do for free. You may have done a little damage since you did blow that fuse cause evidently you shorted something when replacing the battery. One other thing is that you may want to clean the throttle plate on the vehicle. If there was a lot of carbon build up your throttle plate may be open a bit and it doesn't want to learn its idle because the throttle position sensor thinks its off.

Posted on Oct 23, 2013

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Posted on Jan 02, 2017

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SOURCE: I changed the battery and

At a guess, I'd say that you have got the new battery in back to front. This means that you are hooking the earth wires to the Positive side of the battery.

Posted on Mar 24, 2011

  • 81 Answers

SOURCE: changed main fuse car started

check alternator output

Posted on Sep 13, 2011

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2 Answers

I just put a new alternator on my 97 isuzu rodeo but it still draining the battery and stalling how do I reset the computer so it picks up the new alternator of is it something else


i bet you skipped step 1, in the book, FSM and all car repair books in print, 100 years now.
disconnect the battery neg lug first.!
oops, you blew the main fuses. (or blew up the new alt... sad huh)
cb 7 or cb3 fuses blown? CB means cab fuse.(dash box)
drains driving, i bet.
right.?
and the battery is not 13.3v to 15vdc running (good range)
bet 2:
and engine RPM is 800RPM or more at all times, right?
not 400.
the belt is not slipping or missing.
the connections are all tight
the battery cable lugs, are all clean, x4 ends. right?

no engine stated, size and number of cylinders.
as you may not know, diffr, engines sometimes have diffr ALT.
usa answer (for just 2 engines only , usa)
2.6L and 3.2 liter both have PCM generator gain control pin
and the PCM can be bad.
is the charge light glowing running, ?????

here is the proof the PCM does run the reg inside ALT.
called gen gain line.

25782645-zy5i2xuw3mfjw4tca3plar50-1-0.jpg you didnt blow EB17 main fuse that kills all .
there is the CB fuse , for alt.


25782645-zy5i2xuw3mfjw4tca3plar50-1-1.jpg

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