1G ECU wiring help

[Nuzzi]

I was cleaning up a wiring hack job today from the previous owner on the ecu harness, I noticed pin 14 on the 24pin connector is empty, and it looks like it was re-pinned into pin 15 for egr? Pin 6 is there, although several wires have been cut and respliced. I also found out it might have a 1.8 head on it today if that makes a difference. Is there a reason someone moved it to 15 or is it a mistake. thanks.

91 talon tsi manual

 

[AllanL]

does your MAF have 6 wires or 7 wires?

 

[Nuzzi]

pretty sure its a stock 1g maf, ill double check today. from what ive found it looks like it was just mis pinned.

Does anyone have a pinout for a 91? all I can find are for other years with different color wires than mine. I need to double check the location of all the wires. 91 talon tsi manual

 

[AllanL]

one pin is MAF reset

another pin is for the idle position switch.

which is 6 and 14, depends on your ECU year...

if you've got the MAF with 6 wires, it's most likely an NA MAF, and does not have the MAF reset yet.

if you've got no idle position switch, you'd have some issue with decel and idle [surge?]...

 

[Nuzzi]

It's a 7 wire, just pulled it out. I also just found out the turbo is undersized, the rubber intake hose is actually bigger than the turbo inlet. Wtf.

The problem is I bought this as my first dsm in not the greatest shape. I actually havnt even driven it yet and I'm just starting to tear it apart.

Ok I figured out I was looking at the plug wrong, the wires match up now. The p.o. must've done the same because pins 10 and 19 were cut, and if you start with pin 1 on the oppsite end they come in as 6 and 14. fixed.

 

[AllanL]

great!

so resolved right?

 

[Nuzzi]

Fixed, thanks.

 

[AllanL]

I also just found out the turbo is undersized, the rubber intake hose is actually bigger than the turbo inlet. Wtf.

By the way, in between the intake snorkel and the turbo inlet, there should be a thin rubber seal/ring about 1" wide and 0.1" thick.

Maybe this is missing, so you'd presume that the turbo was undersized...

 

[Nuzzi]

Yep the seal is missing. Thanks again.

 

[AllanL]