1990 AW4 not liking 1-2 shift anymore
04-22-2015, 05:30 PM
#46
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Location: Sevier County, TN
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Year: 1990
Model: Cherokee
Engine: 4.0
Completely off subject, but all 3 of us joined on the same month in the same year. I need to up my post count...
04-23-2015, 09:09 PM
#50
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Year: 1990
Model: Cherokee
Engine: 4.0
No change... Except my voltmeter is accurate now. I Checked the shift logic ground, and replaced the negative cable to the block just for the hell of it because I had the cable lying around.
04-23-2015, 10:38 PM
#51
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Year: 1990
Model: Cherokee (XJ)
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04-24-2015, 08:11 AM
#52
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Year: 1990
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0.0 using negative battery post to ring terminal for shift logic. When I get a minute I will check resistance between shift logic ground and its proper pin on the TCU connector.
I thought I had a spare TCU from an '89... Im going to hit up my storage unit after work, I havent been there in forever...
I thought I had a spare TCU from an '89... Im going to hit up my storage unit after work, I havent been there in forever...
04-24-2015, 05:38 PM
#53
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Year: 1990
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0.00 from negative battery cable to tcu shift point ground, and between TCU and shift point ground on engine block.
04-24-2015, 05:52 PM
#54
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Year: 1990
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Might be worth trying a different TCU. 87 to 90 will "work".
I oughta contribute one of my spare ones to CC and guys could send it to each other for testing purposes.
I oughta contribute one of my spare ones to CC and guys could send it to each other for testing purposes.
04-24-2015, 06:09 PM
#55
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Year: 1990
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Well I just wired up switches that actually work, and she shifts as soon as I throw the switch. I am about to head to storage now. Hopefully I have the TCU
04-24-2015, 08:42 PM
#56
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Swapped out the TCU, no change.
I know for a fact I did not HAVE to be at a minimum speed of 25-30 MPH before the trans would shift into 2nd. I would let off of my throttle around 10-15 and it would shift into 2nd (back streets in town are 20MPH).
I know for a fact I did not HAVE to be at a minimum speed of 25-30 MPH before the trans would shift into 2nd. I would let off of my throttle around 10-15 and it would shift into 2nd (back streets in town are 20MPH).
04-24-2015, 09:05 PM
#57
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Meaning? The Trans side of your TPS may be bad?
04-24-2015, 09:08 PM
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04-24-2015, 09:09 PM
#59
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Year: 1990
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