ECU question
 

I've got a virgin p05 out of a bone stock CX , when i cracked it open i noticed a transistor had over heated and cracked, the question is what circuit it's for. There are no CEL's, and none after jumpering. I was thinking o2 circuit maybe because the wire was melted to the manifold? havent traced it yet. i chipped it and it seems to work well, was going to wire up the wideband here soon and done want to run into probs. thnx guys O0

Re: ECU question
 

Thats Q31, controls the PCS

Re: ECU question
 

so what all would that effect? you wouldnt happen to have any of those transistors layin around i could purchase, or should i just goto the junkyard with my butane solderer lol?thnx man.

Re: ECU question
 

we have some for $3 plus shipping. As far as I understand it q31 isnt totally necessary unless you want to use the purge control as an output to control something else, or if you want your purge setup to function like stock.

Re: ECU question
 

u got lucky it works.cause ive came across 2 obd1 ecu with that same part blowen.they would wrok fine till i chip it then it would throw a soild cel.if i would remove the jumper it would be fine running off stock program.i know it wasnt the way i chipped it cause i found another vrigin p28 and chiped it and it ran perfect.hey ghettoturbo i may be interested them them to just incse i come across aonther ecu with that part blowen i can replace it.

Re: ECU question
 

if they overheat for too long...sometimes they can take out other components.

Re: ECU question
 

must of cause when it blew it burnt the top of the ecu cover a little.