Welcome Visitor! Please take a few seconds and jeiroq
New Member
- Joined
- Oct 13, 2009
- Messages
- 21
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1990
- Make / Model
- Ford
- Engine Size
- 4.0L
- Transmission
- Automatic
I've got a crazy problem going on with my Bronco II. A little back story - 2.9L died on me so I purchased a 4.0 from a 92 Explorer (should've got tranny too but didn't). I had my A4LD from the 90 BII rebuilt and the 4.0 motor rebuilt. Everything in the truck works except horn (not a biggy right now) and overdrive/TCC lockup.
I've been trying to track down wires that could be swapped or whatever the deal is. I was told on another forum that I should check the red wire going to the tranny to make sure it has power first when KOEO, as far as I can tell - it doesn't. I though two wires were crossed (red wire and a purple (or dark blue?)/orange wire, when I checked out the ppl/org wire with KOEO it showed ~12V but when off, there was nothing. I changed those wires around (shouldn't have) and when I take the key from off to on (not start!) the engine starts. So I fixed that back to where it was.
I've found that the 3-4 shift wire should be tan/lt blue from the 2.9 and on the 4.0 it would be org/yel. I don't know what wires went where because my uncle did the wiring without me and doesn't remember what he did now. I'm glad everything else works, but need my overdrive!
If someone could just point me in the direction of even what pins from the big plug through the firewall are supposed to be for the transmission that would help a lot!
I wouldn't be asking for help if I didn't need it. I've researched into this for 20+ hours and can't find anything that really helps.
I have the wiring diagrams showing that it's supposed to be #52 and #53 but I don't know where they are on the plug.
I've been trying to track down wires that could be swapped or whatever the deal is. I was told on another forum that I should check the red wire going to the tranny to make sure it has power first when KOEO, as far as I can tell - it doesn't. I though two wires were crossed (red wire and a purple (or dark blue?)/orange wire, when I checked out the ppl/org wire with KOEO it showed ~12V but when off, there was nothing. I changed those wires around (shouldn't have) and when I take the key from off to on (not start!) the engine starts. So I fixed that back to where it was.
I've found that the 3-4 shift wire should be tan/lt blue from the 2.9 and on the 4.0 it would be org/yel. I don't know what wires went where because my uncle did the wiring without me and doesn't remember what he did now. I'm glad everything else works, but need my overdrive!
If someone could just point me in the direction of even what pins from the big plug through the firewall are supposed to be for the transmission that would help a lot!
I wouldn't be asking for help if I didn't need it. I've researched into this for 20+ hours and can't find anything that really helps.
I have the wiring diagrams showing that it's supposed to be #52 and #53 but I don't know where they are on the plug.
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