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TCU or NSS?

DieselSJ

NAXJA Forum User
Location
QC AZ
Not being able to search for 3 letter words really makes this difficult sometimes!

The trans in my 91 (AW4 behind a 4.0) shifts a little too high going from 1-2 and 2-3. Sometimes I even need to lift on the throttle a little to get it to upshift.

When putting the shifter in the 1-2 position, it will not shift out of 1. When I put it into 3, it will shift 1-2-3.

Reverse lights have not been giving me any issues.

What is next to test?
 
TPS (Happy searching). ;)

(Throttle Position Sensor)
 
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