aw4 quick upshift, no kickdown

strokedwoody · Jan 28, 2004

Trans acts like the cable is out of adjustment, but it isn't. This is an 88' 4.0 aw4, 242. It shifts to quickly through the gears and won't downshift under throttle. Anything else to check other than the control unit for the trans?Thanx for the help...just trying to help a buddy out.

Christopher · Jan 28, 2004

strokedwoody said:
Trans acts like the cable is out of adjustment, but it isn't. This is an 88' 4.0 aw4, 242. It shifts to quickly through the gears and won't downshift under throttle. Anything else to check other than the control unit for the trans?Thanx for the help...just trying to help a buddy out.

Check the fuse. I had the same problem and it turned out to be the 7.5 amp fuse in the fuse block.

strokedwoody · Jan 28, 2004

Christopher said:
Check the fuse. I had the same problem and it turned out to be the 7.5 amp fuse in the fuse block.

fuse is fine......got power to control unit...this may be reaching...but does the nuetral saftey switch incorperate any of the shifting functions?

CheapXJ · Jan 28, 2004

strokedwoody said:
fuse is fine......got power to control unit...this may be reaching...but does the nuetral saftey switch incorperate any of the shifting functions?

throttle position sensor, NSS and there's a speed sensor in the transmission itself. those are the inputs to the TCU.

sounds like a throttle position sensor issue to me.

strokedwoody · Jan 28, 2004

TPS solved the prob. thanx for the help...

aw4 quick upshift, no kickdown

strokedwoody

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Christopher

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strokedwoody

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CheapXJ

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strokedwoody

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