which ecu?

[90T5I]

so my ecu crapped out on me.. a ground inside of it shorted out so i have had to wire my PMI relay diectly to ground with a toggle switch ghetto i kno but it works for now. so here is my problem. its a 1990 talon tsi. what kind of ecu do i need to try and find?

 

[snowborder714]

I would try and find another ECU from a '90 that way you don't have to mess with trying to get a '91-'94 ECU to work. It is possible, though.

 

[90T5I]

so the 90is different then the 91-94? if i have to get one like that how would i get it to work?

 

[yokotabrat]

Sounds like cap damage in the ecu took out the trace for the driver that controls the MPI relay.

Yes, the 90 ecus are slightly different from the 91-94s. There are work arounds if you want to use a 91-94 ecu (easier to find).

One option:
converting a 1990 to a 1991-1994 ecu system

Another option:
http://www.dsmchips.com/1990ecu.html

You still need to swap pins 6 and 14, but these solve the tach problems associated with swapping to a 91-94 ecu. Hope this helps.

 

[fatherbubble]

Get intouch with DSMLink they repair ecu's for a cheap price. Mine got fried an they repaired it for 30 bucks + shipping. can't beat it the repair shop here wanted 150 to repair it an another used one on ebay was 200. Give them a shout.

 

[snowborder714]

^ Or contact steve (that's his user name) on here as he does ECU repairs.

 

[90T5I]

Get intouch with DSMLink they repair ecu's for a cheap price. Mine got fried an they repaired it for 30 bucks + shipping. can't beat it the repair shop here wanted 150 to repair it an another used one on ebay was 200. Give them a shout.

how do i get ahold of them?

 

[yokotabrat]

Their contact info is here:

DSMLink - Contact

Probably shoot them an email at that address.

 

[fatherbubble]

Yea email them they will respond by the next day. They dont do phone calls all email. So they always stay at there ocmputer checking it. Funny to me but when I email them theyu alway respond in a few hours.

 

[samhain]

Any chance you could explain the wiring of the pmi relay. I would like to try that!