96 4v to 98gt swap (Just finished photos)

[Blind]

it's only a PATS problem if the theft light is blinking rapidly, if it isn't, than your problem isn't related.

I think it's something else, as it actually fires, but I am not positive.

 

[98zzzz]

It is flashing rapidly. and I found this, refer to the chart, It indicates 1996 did not have a starter disable... Ive also read that it works by cutting power to the PCM, indicates my problems, no fuel or spark after trying to start...
I could be wrong :dontknow:
Good info in here anyway...
http://www.carquest.com/common/downloads/partsTechEngineSpring _05_Tech_Bulletin.pdf

 

[Blind]

my mother in law drives a 1996 mustang gt convertible, and when the chip in her primary key took a dump, the car would crank and crank and crank and flash the theft light, but never fire.

using her other key, car started right up.

FWIW, I have no idea the specifics. But I know that when I helped a friend fix a fire damaged `01 mustang, we used the engine harness, computer, ignition cylinder, and PATS ring from a 2000 mustang that I parted out, and it fired right up the first time.

 

[98zzzz]

Got this on another forum-
"Let's recap. The theft light blinks during cranking. It starts and runs for a few seconds but then shuts off.

For the 99-04 MY PATS disables fuel and spark. The symptom is crank with no start.

The 96-98 MY is either a no crank or starts but shuts off after a few seconds. That EXACTLY matches your symptom.

The 96-98 MY does not require PCM/cluster re-programming when either part is replaced (99-04 MY does)."


everything is kosher with the swap. What would you suggest looking into besides the PATS?

 

[Blind]

as it runs and dies, I'd scan it for codes, specifically I'd look for somebody with a snap-on modis or the like, that can run tests while the engine is running, it may help shed some light on what's getting kicked off to kill it. I think it may be fuel pump driver related, as the 98's have a bit of a different setup than the 96's.

have you thought about trying the GT harness/computer/key cylinder/pats ring?

 

[elementjonjon]

Check the IAC

 

[98zzzz]

as it runs and dies, I'd scan it for codes, specifically I'd look for somebody with a snap-on modis or the like, that can run tests while the engine is running, it may help shed some light on what's getting kicked off to kill it. I think it may be fuel pump driver related, as the 98's have a bit of a different setup than the 96's.

have you thought about trying the GT harness/computer/key cylinder/pats ring?

Will report back on this, thanks. I only have auto stuff from the gt... I dont think thatll work.

 

[Mustang Mark]

your problem is the PATS