ECU Swap Problems

[Legwerx]

Ok, so I just swapped a 92 tleg ECU into my 1990 Wagon. I swapped the positives on the cam and crank sensors, and I am wiring the pressure sensor into it.

I am throwing 2 codes

the air pressure sensor

and the IAC..

Swapped the whole intake manifold, and the IAC.

But it idles like crap until it's warm, and then every few revs it will take off and idle up to about 2500rpm on it's own, but a rev will make it go down to normal.

Do I need to wire the IAC differently??

Rick

[Legwerx]

Ok, so now it's throwing code 13- crank angle sensor....

All others went away...

WTF?!?!?!

[jeffast]

maybe you should check the crank angle sensor wireing, where you spliced it

[Legwerx]

OK, so no body has swapped the 92 t leg ecu for a 90 na?????


Anyone???


I think I got it figured out, traced all wires back, everything checks fine.

today I drove it and it seemed fine til all the sudden the 3 codes came back!!!

I wired in all the boost related sensors, and everything.

Will the ECU throw the crank sensor code as a default cause the boost sensor "fails"?????