E4OD problem
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E4OD problem
decided to do some maintenance on my 1991 F350 4X4 7.3 diesel. drained and replaced oil and filter in tranny. about 4 days later having probs. slipping real bad in 1st and wont shift to 2nd and so on. it has reverse but it feels snatchy, like the feel of truck in 4 wheel low lock. noticed that when the truck is started it seems to slightly lunge forward. also my anti lock light is on in dash. i did not drain the torque converter. i replaced the vss sensor but anti lock light still on. i did get the old seal from filter out before putting in new on. any sugestions would be appretiated ty.
Last edited by lomac9; Feb 10, 2007 at 06:08 AM.
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From: minnesota
Did you put the right fluid in? It should take Dex3. Also is the tranny full? I wouldn't think not draining the torque convertor would affect anything. If this doesn't fix your tranny i'd say its either the MLPS or your PSOM. I had to change both of these in my truck, now it shifts like a champ. As far as electronics, You'll have to scan your truck to see why the abs light is on.
good luck dude
good luck dude
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yeah i put in dex3. im new to the E4OD so im not sure what MLPS and PSOM is. i did have a guy try and scan my truck but he said there must be a ground somewhere loose because it wont read. ive had no probs w/ wiring so im not sure about his assessment. someone did tell me that u have to check level 3-4 times over a period of a couple days to make sure its full. i will check again.
Mountain Pass
Joined: Jun 2004
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From: Canada
You might want to look at the scanning again. If you can't get a response from the processor it may be a problem. You should get a pass code. If the electronics are not working the trans will be in limp mode, the OD light may flash or not. The shop manual has a troubleshooting chart for no codes. Hope this helps...Don
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he has a newer model F250 (believe 96-97), when mine didnt read he went to his just to test the scanner and it wrked on his. my brother has a 1991 F250 same moter trans and the guys scanner wouldnt wrk on his either. is it possible that the scanner he had might not read the earlier models?
i find it hard to believe w/ 2 1991 trucks sittin there that it wouldnt wrk on ours but would on his (and theres nothin wrong w/ the F250 ). but...... if i did look for a ground any suggestions on where to start? there is many, any specific ones for the tranny or computer? thanks again.
i find it hard to believe w/ 2 1991 trucks sittin there that it wouldnt wrk on ours but would on his (and theres nothin wrong w/ the F250 ). but...... if i did look for a ground any suggestions on where to start? there is many, any specific ones for the tranny or computer? thanks again.
Hotshot
Joined: Jan 2004
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From: St Louis
The scan tool for a 96+ is different than for a 95 and prior (usually). Those that do have dual capavility require special cables as part of the arrangement.
Pre-95s can be scanned with nothing more thab a paperclip. Instructions are here, on this site.
Steve
Pre-95s can be scanned with nothing more thab a paperclip. Instructions are here, on this site.
Steve
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Mountain Pass
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From: Canada
1991 is pre OBD2. A newer reader might not work. The plugs are different. You can use a analouge voltmeter or test light and a jumper. You count sweeps to find what code it is. Should not be hard to find a procedure, you will also need some diagnostic charts.
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