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1G 90 TPS vs 91 TPS wiring

Zephyros91talon

Probationary Member
24
0
Mar 3, 2009
Pueblo, Colorado
Hi I put a 91 TSi FWD motor into a 90 TSi AWD shell and am having some troubles wiring the TPS in.

The 91 TPS pigtail has 3 wires, green/black, green/red, and green/white.
The 90 TPS pigtail has 4 wires, green/black, green/red, green/white, and green.

Now my wiring diagrams show this green wire is the idle switch, and (if I'm reading this diagram correctly) on the 91's this green wire has its own plug into the harness whereas on the 90 its all one plug.

My question then is if I splice the 91 TPS pigtail onto the 90 harness I will have the green wire left to splice in; where does it go?
 
Solution
My question then is if I splice the 91 TPS pigtail onto the 90 harness I will have the green wire left to splice in; where does it go?

Closing the loop here for future searchers. The Extra Green wire on the 90 harness is for the Idle Position Switch on the back of the Throttle Body.

steve

DSM Wiseman
14,447
1,390
Feb 3, 2002
St. Charles, Illinois
My question then is if I splice the 91 TPS pigtail onto the 90 harness I will have the green wire left to splice in; where does it go?

Closing the loop here for future searchers. The Extra Green wire on the 90 harness is for the Idle Position Switch on the back of the Throttle Body.
 
Solution

1990TSIAWDTALON

Moderator
9,127
4,962
Nov 14, 2013
Independence, Kansas
Thank you Steve :thumb:
 
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