My voltage regulator in my pcm/ecm fried out and I need a new pcm. I found one at the u pull it close to me for cheap. My question is as long as it's from the same year engine and set for an auto tyranny it should be good right? My ecm number was 56041534 ae. But the letters start at aa and go to ah. What interchanges with mine if anything? Thanks in advance.

 

IIRC the small letters are revisions to the program, as long as the numbers match it should work.

There's also the security and non to match up..

 

That's what I was thinking, wasn't sure if I was correct or not. What was the last part you were talking about? It confused me.

 

Factory alarm..

If you have one you need a PCM that was programed for one. It was in addition to your mention of Year/engine/trans for compatibility issues.

 

Yeah mine doesn't have an alarm. So ill be good there. Thanks for the info.

 

i need some help and cant find the answer i need can i use a 98 xjs pcm for my auto to manual swap i scored all the parts i need of a 98 donor vehicle and it comes with a pcm will it work in my 96 there both ob2 if not what do you sugest how can i lie to my current computer to get it to work if the 98 wont work will it fry anything if i plug it in to see if it works or not i really need help fast and cant figure out how to post on here with my own thread

 

You need a part number 56041248 PCM ('96, 4.0, Manual Trans).'98 won't work.


Part number 56041248 has been superseded by pat number 4886958 if you get one from the dealer, or are searching on ebay.

 

ccken if i cant use the 98 computer how can i wire my present computer to fool the computer into thinking i have an aw4 so it doesnt throw me cel codes i know how to wire the bypass for the nss but is there more to it

 

Get the proper PCM and forget the trickery.

 

ccken i will be getting a proper pcm but since the 98 i have wont work and my trans is out and i dont have the cash for the pcm at the moment i need it running for the mean time so i need to know how i can fool it for the time being for about a month maybe two so do you know how i can do it or what

 

I don't know how to trick/fool a PCM, nor would I try. Sorry.

 

Hey I need to know what pilot bushing to use in this swap I have a 96 4.0 with a 98 trans do I get a 98 bushing or A 96 or are they the same size

 

Go to a junkyard and make sure you Vin and the other xjs Vin Is somewhat in the same range should work fine