4x4 conversion not going very well! Help!!
Thread Starter
|
New User
Joined: Aug 2011
Posts: 3
Likes: 0
4x4 conversion not going very well! Help!!
truck converting to 4x4:
1996 F150
-302
-e40d
-OBDII
Donor truck:
1994 F150 4x4
-302
-4r70w
-OBDI
Problem:
We installed the 4r70w trans + t-case in the 2wd last night. Everything went smooth and bolted up but I got one problem now. The wiring for transmission is different. We took out transmission harness out of 4x4.
Question:
Both truck harness's are connected to two plugs on drivers side inner fender close to firewall.
The E40D has 3 plugs on harness: 1. 02 sensor
2. Gear selector ( Drivers side )
3. On top of pan ( Passenger side )
The 4R70W also has 3 plugs : 1. Gear selector ( Drivers side )
2. Two prong half way up ( Drivers side )
3. On top of pan ( Passenger side )
Could I make the 4x4 Harness work some how on my 1996.
If So does ANYONE know what to do?
I've been talking to 1 guy on www.f150forum.com . But I would like some one else's opinion on this. I really want to keep this transmission set up as the Transmission was just rebuilt.
Here's the link to our Conversation. All this work for nothing? please help! - Ford F150 Forum - Community of Ford Truck Fans
Any Help would Be great!
Thanks,
Colby
1996 F150
-302
-e40d
-OBDII
Donor truck:
1994 F150 4x4
-302
-4r70w
-OBDI
Problem:
We installed the 4r70w trans + t-case in the 2wd last night. Everything went smooth and bolted up but I got one problem now. The wiring for transmission is different. We took out transmission harness out of 4x4.
Question:
Both truck harness's are connected to two plugs on drivers side inner fender close to firewall.
The E40D has 3 plugs on harness: 1. 02 sensor
2. Gear selector ( Drivers side )
3. On top of pan ( Passenger side )
The 4R70W also has 3 plugs : 1. Gear selector ( Drivers side )
2. Two prong half way up ( Drivers side )
3. On top of pan ( Passenger side )
Could I make the 4x4 Harness work some how on my 1996.
If So does ANYONE know what to do?
I've been talking to 1 guy on www.f150forum.com . But I would like some one else's opinion on this. I really want to keep this transmission set up as the Transmission was just rebuilt.
Here's the link to our Conversation. All this work for nothing? please help! - Ford F150 Forum - Community of Ford Truck Fans
Any Help would Be great!
Thanks,
Colby
Lead Driver
Joined: Feb 2002
Posts: 7,961
Likes: 594
From: Greater Austin, Texas
I am a little bit confused - how many O2 sensors does each truck have? I thought 96 and 94 302s would both be OBD2.
My truck is OBD1 so this may not work but all I had to do was plug in the trans harness from the donor truck into my existing underhood harness.
If the donor truck is truly OBD1 you are going to have to either convert your truck to OBD1 or you are going to have to find the proper ECU because the ECU for the E4OD is not going to work with the 4R70W.
My truck is OBD1 so this may not work but all I had to do was plug in the trans harness from the donor truck into my existing underhood harness.
If the donor truck is truly OBD1 you are going to have to either convert your truck to OBD1 or you are going to have to find the proper ECU because the ECU for the E4OD is not going to work with the 4R70W.
Posting Guru
Joined: Jul 2009
Posts: 1,069
Likes: 1
From: Toledo, Ohio
96 was the OBD1 cutoff, they switched to OBD2. I think the mistake was to have a donor truck with a trans from one model, and the project truck another.
I have seen people with Hondas get OBD2 computers then cut and splice wires together to retrofit an OBD1 system into an OBD2.
If I were the OP and had to go off where he is at now, I would probably run a few extra wires from point A to point B to get done what I needed. It seems as though the 2 harnesses are too different to make this an easy conversion. Anything can be done. The question is how much work do you want to put into it?
I have seen people with Hondas get OBD2 computers then cut and splice wires together to retrofit an OBD1 system into an OBD2.
If I were the OP and had to go off where he is at now, I would probably run a few extra wires from point A to point B to get done what I needed. It seems as though the 2 harnesses are too different to make this an easy conversion. Anything can be done. The question is how much work do you want to put into it?
Thread Starter
|
New User
Joined: Aug 2011
Posts: 3
Likes: 0
96 was the OBD1 cutoff, they switched to OBD2. I think the mistake was to have a donor truck with a trans from one model, and the project truck another.
I have seen people with Hondas get OBD2 computers then cut and splice wires together to retrofit an OBD1 system into an OBD2.
If I were the OP and had to go off where he is at now, I would probably run a few extra wires from point A to point B to get done what I needed. It seems as though the 2 harnesses are too different to make this an easy conversion. Anything can be done. The question is how much work do you want to put into it?
I have seen people with Hondas get OBD2 computers then cut and splice wires together to retrofit an OBD1 system into an OBD2.
If I were the OP and had to go off where he is at now, I would probably run a few extra wires from point A to point B to get done what I needed. It seems as though the 2 harnesses are too different to make this an easy conversion. Anything can be done. The question is how much work do you want to put into it?
Yeah Im sure I can make something work. I wonder If I went to Ford and ordered a transmission harness for a 1996 4r70w 4x4 it would just plug into my exsisting harness?? Im so bummed out right know I got all my parts ready to go into truck but now the trans issues just stumped me.
Also where is the ECU located in my truck? If I went to a wrecker and for a 96 with the 4r70w transmission then I would be golden right?
I dont know... I just need help with this bad. Im going to call the transmission shop and auto wreckers and ford tommorow and try and figure this out.
but thanks for the help guys! really appreciate it
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
IMHO the safest bet is to get an OBD II transmission of the correct year for your project.
Which particular computer came installed in any particular vehicle is determined by the Calibration Code - 49-state emissions or California, low or high altitude, AC or no, what engine & tranny, what axle ratios, etc. etc. etc.
There are literally hundreds of such Calibration Codes.
You may be able to get a standalone aftermarket transmission computer, I know they're available for the E40D so I'd guess they should be available for the 4R70W.
But it's gonna be pricey, expect to pay around $1,000 for the computer & adapters & necessary hardware.
You should also be looking at the colors of the wires in the plugs, it's probably not as simple as merely plugging in two connectors.
Which particular computer came installed in any particular vehicle is determined by the Calibration Code - 49-state emissions or California, low or high altitude, AC or no, what engine & tranny, what axle ratios, etc. etc. etc.
There are literally hundreds of such Calibration Codes.
You may be able to get a standalone aftermarket transmission computer, I know they're available for the E40D so I'd guess they should be available for the 4R70W.
But it's gonna be pricey, expect to pay around $1,000 for the computer & adapters & necessary hardware.
You should also be looking at the colors of the wires in the plugs, it's probably not as simple as merely plugging in two connectors.
Thread Starter
|
New User
Joined: Aug 2011
Posts: 3
Likes: 0
IMHO the safest bet is to get an OBD II transmission of the correct year for your project.
Which particular computer came installed in any particular vehicle is determined by the Calibration Code - 49-state emissions or California, low or high altitude, AC or no, what engine & tranny, what axle ratios, etc. etc. etc.
There are literally hundreds of such Calibration Codes.
You may be able to get a standalone aftermarket transmission computer, I know they're available for the E40D so I'd guess they should be available for the 4R70W.
But it's gonna be pricey, expect to pay around $1,000 for the computer & adapters & necessary hardware.
You should also be looking at the colors of the wires in the plugs, it's probably not as simple as merely plugging in two connectors.
Which particular computer came installed in any particular vehicle is determined by the Calibration Code - 49-state emissions or California, low or high altitude, AC or no, what engine & tranny, what axle ratios, etc. etc. etc.
There are literally hundreds of such Calibration Codes.
You may be able to get a standalone aftermarket transmission computer, I know they're available for the E40D so I'd guess they should be available for the 4R70W.
But it's gonna be pricey, expect to pay around $1,000 for the computer & adapters & necessary hardware.
You should also be looking at the colors of the wires in the plugs, it's probably not as simple as merely plugging in two connectors.
Hey thanks for the input.
The wires on the two harnesses are pretty much the same, 6 in one plug and 15 in the other on each harness just the 2 ends are diffrent. Im going to call around tommorow and see what I can do. If worst comes to worst Ill pull the transmission out again. my buddy has a 89' 302 5 speed with the manual transfer case for $500.00 and come with a parts truck. Am I going to run into the same problems If I just convert the truck to 5 speed?
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
I'm assuming you're referring to a manual tranny for the 5-speed, right?
Trending Topics
Posting Guru
Joined: Jul 2009
Posts: 1,069
Likes: 1
From: Toledo, Ohio
I would do what you said and go to Ford or something first and see if you can get a harness for the application you are looking for.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Lead Driver
Joined: May 2009
Posts: 6,807
Likes: 704
From: Tobyhanma, PA
The eeasiest thing here to do is convert to a manual in my opinion. Besides the obvious, you'll jsut need a ecu from a similiar model truck with a manual tranny. Plug and play. Using an ecu from an auto trans equipped truck will cause issues as the ecu is trying to send and receive signals from the trans, where as a manual trans ecu has those lines taken out. Hope that makes sense.
Thread
Thread Starter
Forum
Replies
Last Post
Brown Falcon
1994.5 - 1997 7.3L Power Stroke Diesel
13
Jul 5, 2020 05:35 PM
Phillip Reeves
1987 - 1996 F150 & Larger F-Series Trucks
8
Feb 8, 2012 05:18 PM