94 E4od problems help!
Senior Member
Joined: Feb 2013
Posts: 1,885
Likes: 70
From: Alabama
Only reason I thought it might be a straight 6 is bc I ran the Vin on the body and it use to be a straight 6. But the motor (so I'm told) is a 351w out of a rv. And my motor runs rich I would say only bc of the smell. I have been thinking of buying a ecm for a 351 and e4od and seeing what that did. But I'm kinda shooting in the dark bc I was out of ideas. And I'm thinking of buying an independent brain for my trans. I looked them up there like 500 bucks though
Senior Member
Joined: Feb 2013
Posts: 1,885
Likes: 70
From: Alabama
If somebody swapped in a 351, they may have swapped trannys too. Which is a problem because the computer has to match the tranny and year of the tranny.
But that may not be the case at all. Electronic trannys (especially the E4OD) are very sensitive to sensor input faults.
Basically, it doesn't decide anything about when to shift or what gear to shift into. It is told by the computer what to do and when. The computer sends a signal based on what all the sensors are telling it. So a bad sensor can mess everything up. (VSS, TPS, PSOM, MLPS, and a few others)
There are shift solenoids inside the tranny that can mess up - those are what the computer sends the signal to. Those should have been addressed and tested or replaced during a rebuild.
And lots of tranny shops are more than happy to rebuild it even though it doesn't need to be.
If you took it to a shop and they told you that your tranny needed to be rebuilt to solve the problem and it turns out that rebuilding the transmission itself is not what was actually required to make the truck shift, you've been fleeced. Not the first guy to go through that though. I'd take it back and I'd be more than a little pi**ed off at them.
But that may not be the case at all. Electronic trannys (especially the E4OD) are very sensitive to sensor input faults.
Basically, it doesn't decide anything about when to shift or what gear to shift into. It is told by the computer what to do and when. The computer sends a signal based on what all the sensors are telling it. So a bad sensor can mess everything up. (VSS, TPS, PSOM, MLPS, and a few others)
There are shift solenoids inside the tranny that can mess up - those are what the computer sends the signal to. Those should have been addressed and tested or replaced during a rebuild.
And lots of tranny shops are more than happy to rebuild it even though it doesn't need to be.
If you took it to a shop and they told you that your tranny needed to be rebuilt to solve the problem and it turns out that rebuilding the transmission itself is not what was actually required to make the truck shift, you've been fleeced. Not the first guy to go through that though. I'd take it back and I'd be more than a little pi**ed off at them.