92 spirit engine harness swap ?'s

MarkassBauer said:

I have to do a a computer and harness swap in my 92 spirit auto 2.5 TBI, I'm putting in a T1 computer and harness, just wanted to know if there were anything I should know or be aware of? Anything tricky? Or pretty straight forward??? Thanks in advance for any info or tips!!!

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And you are keeping the TBI engine???

MarkassBauer said:

I have to do a a computer and harness swap in my 92 spirit auto 2.5 TBI, I'm putting in a T1 computer and harness, just wanted to know if there were anything I should know or be aware of? Anything tricky? Or pretty straight forward??? Thanks in advance for any info or tips!!!

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I'll assume this is in relation to the MPFI conversion you talked about in another thread. You need a computer and harness from a '92-93 turbo car (or flex fuel car?). The computer systems changed in '92+. The bulkhead connector should make the job plug and play if you find the parts from another Spirit. You'll still need the wastegate and purge solenoids from the turbo car so they won't set a fault code. Or you'll need to put some sort of resistor in place of them. You definitely need the turbo MAP. You'll probably want to run the turbo fuel pump as well. The stock system will try to maintain turbo-level fuel pressure and burn out the pump.

NAJ said:

And you are keeping the TBI engine???

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Correct! Just swapping it over to MPFI, w/ a turbo computer.

I'm gonna run a turbo MAP, an AFPR, and do I have to run the waste at and purge solenoids? If the fault code is the only downfall that's fine but if it will affect running, start up, or mpg's than I'll run them.

Leaving the wastegate solenoid unplugged will result in a code 36, no CEL or other issues. Same goes for the purge solenoid, code 31. Your Spirit should already have some sort of purge solenoid in it already, so it wouldn't take any special effort to hook it up. And, as I said, you could always research what resistor is needed to fake the wastegate solenoid if you just want it out of the car. I know there have been posts about it on this forum before.

Well the wastegate solenoid is the same as my egr solenoid but my car doesn't have one and it just has the pigtail hangin out and it seems fine, yea I do have a purge solenoid already so that's cool. I just need to know does the computers wiring harness go anywhere but the engine bay? Or is that it?

For your purposes, you only need to worry about the wiring on the engine side of the firewall. There will be a black plastic "bulkhead" connector that bridges through the firewall to the interior harness. It should have a single bolt in the middle that binds it in place. As long as you get an engine harness from a '92 Spirit turbo, you should just be able to plug it in and go. I don't think there were any more turbo Spirits in 93+, but maybe the flex fuel harness will be a direct plug in for your car. I can't swear to that part though.

Ok sweet! Thank you!