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Aw4 Trans Connector Issue?


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So I'm trying to figure out why my transmission will not engage. I was checking connectors and found this one looks like it is missing some connectors and maybe even wires. What do you guys think? And how do I fix this if it is actually a problem? I don't see any loose extra wires in that area though.

 

 

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If you have everything unplugged, your aw4 should be manually shiftable. Your shifter positions become:

P   =   Park

R   =   Reverse

N   =   Neutral

D   =   4th

3   =   3rd

2-1=  1st

 

Your tranny would be locked into that gear when the shifter is in that position, and won't shift up or down. It should be driveable, although that first to third (and worse, third to first without a clutch) likely isn't great for anything. Second gear is completely unavailable without the electrics.

 

But at any rate, with the tranny computer unplugged, your transmission should still be grabbing the gears. If it's not, then either there's something wrong with the shifter cable and/or shift linkage, or else internally to the transmission. Are there any gears in particular it's not engaging, or just all of them? Does it leave park?

 

Edit: The Tranny computer and pinout, harness, etc. changed between 1990-1991, so you're not noticing something wrong, just something different.

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So I'm trying to figure out why my transmission will not engage.

OP, what do you mean it won't engage? Is the transfer case in Neutral?  What is the fluid level/color/condition?

 

Those would be the only two reasons the tranny would not ENGAGE, that I can think of, other than a bad torque converter or an all over toasted tranny. Wouldn't have any thing to do with the electrics.

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Sorry fluid is full and fresh, there is no transfer case it's 2wd. I am almost certain the trans is toast but as a last ditch effort I compared the connectors and noticed the difference. The only thing I haven't done is try to move the transmission with the electrical plugs undone. When I shift the lever in my truck into park and neutral etc, it stays locked up in park and I can push the truck in neutral.

 

This is my post from when it all started:

http://comancheclub.com/topic/42235-replacing-aw4-bell-housing/?hl=bellhousing

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