Help transmission trouble
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Help transmission trouble
Ok I have a 1990 f-150 with a 302 engine along with an e4od tranny 4x4. My transmission is pretty usless right now, all gears except drive work, when I put it in drive and start to give it gas it is like it is limp mode. It takes the pedal almost to the floor to get it to move. But it will move just not that great in drive, I had replaced the computer a month ago because it went out, when I put the new one in the transmission went to s@!% 
. In the past month I have changed the trans fluid, tps, the nuetral saftey switch and cleaned all the plugs on the speed sensors. The one on the rear axle for abs, and the one on the transfer case. Im at my witts end I don't know if a rebuild is nessicary or not. If so what would it take to convert to a standard transmission. Or if its a simple problem I would like to know. Thank you!!
. In the past month I have changed the trans fluid, tps, the nuetral saftey switch and cleaned all the plugs on the speed sensors. The one on the rear axle for abs, and the one on the transfer case. Im at my witts end I don't know if a rebuild is nessicary or not. If so what would it take to convert to a standard transmission. Or if its a simple problem I would like to know. Thank you!!
Fleet Owner
Joined: Oct 2005
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From: Kentucky
That E4OD transmission is electronic controlled, have you checked for codes?
Your symptoms look like there is no power to the solenoid pack.
A 1990 model year F150 with a 5L engine could have an AOD or E4OD transmission. So assuming you do have the electronic controlled E4OD are you sure you got the correct PCM (computer)?
Your symptoms look like there is no power to the solenoid pack.
A 1990 model year F150 with a 5L engine could have an AOD or E4OD transmission. So assuming you do have the electronic controlled E4OD are you sure you got the correct PCM (computer)?
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no didn't look or smell burnt, just sludge. I didn't see any burnt bands or parts in the pan.
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New User
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That E4OD transmission is electronic controlled, have you checked for codes?
Your symptoms look like there is no power to the solenoid pack.
A 1990 model year F150 with a 5L engine could have an AOD or E4OD transmission. So assuming you do have the electronic controlled E4OD are you sure you got the correct PCM (computer)?
Your symptoms look like there is no power to the solenoid pack.
A 1990 model year F150 with a 5L engine could have an AOD or E4OD transmission. So assuming you do have the electronic controlled E4OD are you sure you got the correct PCM (computer)?
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
The PCMs have the exact same pin count and location. It's the programming inside that makes one compatible with each engine/transmission combination.
Perhaps you still have the receipt with the part number they gave you? If not, you need to remove the computer (PCM) again to get the number off of it.
Perhaps you still have the receipt with the part number they gave you? If not, you need to remove the computer (PCM) again to get the number off of it.
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The PCMs have the exact same pin count and location. It's the programming inside that makes one compatible with each engine/transmission combination.
Perhaps you still have the receipt with the part number they gave you? If not, you need to remove the computer (PCM) again to get the number off of it.
Perhaps you still have the receipt with the part number they gave you? If not, you need to remove the computer (PCM) again to get the number off of it.
MasterPro Electronics ECC154 - Engine Control Module | O'Reilly Auto Parts
look at it and see what you think but I think I got the wrong one.
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Fleet Owner
Joined: Oct 2005
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From: Kentucky
Assuming your truck has an E4OD, it should have an OD On/Off button on the dash or the end of the shifter, then I believe the ECC154 is not correct for your truck.
If the above assumption is correct, E4OD transmission, I believe you need ECC1765
MasterPro Electronics ECC1765 - Engine Control Module | O'Reilly Auto Parts
If the above assumption is correct, E4OD transmission, I believe you need ECC1765
MasterPro Electronics ECC1765 - Engine Control Module | O'Reilly Auto Parts
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Assuming your truck has an E4OD, it should have an OD On/Off button on the dash or the end of the shifter, then I believe the ECC154 is not correct for your truck.
If the above assumption is correct, E4OD transmission, I believe you need ECC1765
MasterPro Electronics ECC1765 - Engine Control Module | O'Reilly Auto Parts
If the above assumption is correct, E4OD transmission, I believe you need ECC1765
MasterPro Electronics ECC1765 - Engine Control Module | O'Reilly Auto Parts
Fleet Owner
Joined: Oct 2005
Posts: 20,786
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From: Kentucky
I apologize for the disclaimers, but now I know for sure what transmission is in the truck. The mechanical/hydraulic AOD is more common behind a F150 w/5L engine in this vintage. Probably another reason why the parts jockey ordered the wrong PCM.
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Ok got the new computer installed it fixed the problem with drive. When I started the relearning process everything when great except for:
Rough starting
spark knocking
and occasionally dieing
Could the engine just be out of time?
Rough starting
spark knocking
and occasionally dieing
Could the engine just be out of time?
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