V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Ignition related problem

Old 03-23-2012, 03:59 PM
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4.Slooo
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Default Ignition related problem

Hi all, new to the site but not to forums all together

Once owned a 89 Foxbody GT and now am looking at a 94 GT with a 4.6 swap.

However the owner says there are a few small issues that need to be worked out


He said that he put a new ignition switch in and the car still wont start, a friend of his said that he may need the PCM flashed to accept the new key?

How would i go about this and a rough estimate of the cost?


Another is to my understanding, the 94 didnt come with a 4.6 and the 3.8 was the biggest engine offered for the trim package, so is this a true swap that is common? What benefits do you think i would see?
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Old 03-23-2012, 10:30 PM
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BUMP!
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Old 03-24-2012, 05:56 PM
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Alright we have an update. Took a look today at the car and got more info

The engine and trans are from a 96 as is the dash cluster and the other ignition stuff. Bone stock.

The owner still has the old key cylinder, broken transceiver, and key fob.

The car will start, then die about 3 seconds after.

the theft light flashes nice and fast after that as i expected.


He has a new set of keys, transponder and cylinder installed, says he tried the remove the fuse trick, battery grounding, and then tried to reset/relearn the pcm the new key with no luck.
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