E4od overdrive problem
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E4od overdrive problem
when my trans is shifting into OD in 4th around 40mph I will do a sudden drop to around 1000rpm and then when trying to accelerate it will feel like it’s struggling like the engine is chugging, sometimes it will shake if I put my foot on the gas hard and sometimes it will kick into gear and go smoothly. With OD off it does not happen and shifts normally. Any thoughts, I was reading and the only thing I could find was the manual lever position sensor could be causing the issue.
Elder User
Joined: Aug 2011
Posts: 858
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From: Chico,CA.
I think it might be the clutch failing in the torque converter. I know that sounds like an oxymoron, but there is a set of clutch plates in the TC that make it lock up completely so there is no slippage like automatics had in days past. If memory serves, the E4OD only locks in 3rd and 4th and has to be at or above a minimum speed. Something along the lines of 30-35 mph. TC lock will occur about 1 sec. after the shift. In that generation of trans. it almost feels like a double shift under light to moderate power. I think your clutches are either worn or glazed and slipping. Brake application causes the clutch to unlock, so try this; with your left foot, apply enough brake pedal to activate the stop lights but not actually apply the brakes. Now drive through the conditions that cause the problem and see if it persists.
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I think it might be the clutch failing in the torque converter. I know that sounds like an oxymoron, but there is a set of clutch plates in the TC that make it lock up completely so there is no slippage like automatics had in days past. If memory serves, the E4OD only locks in 3rd and 4th and has to be at or above a minimum speed. Something along the lines of 30-35 mph. TC lock will occur about 1 sec. after the shift. In that generation of trans. it almost feels like a double shift under light to moderate power. I think your clutches are either worn or glazed and slipping. Brake application causes the clutch to unlock, so try this; with your left foot, apply enough brake pedal to activate the stop lights but not actually apply the brakes. Now drive through the conditions that cause the problem and see if it persists.
Laughing Gas
Joined: Feb 2015
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when my trans is shifting into OD in 4th around 40mph I will do a sudden drop to around 1000rpm and then when trying to accelerate it will feel like it’s struggling like the engine is chugging, sometimes it will shake if I put my foot on the gas hard and sometimes it will kick into gear and go smoothly. With OD off it does not happen and shifts normally. Any thoughts, I was reading and the only thing I could find was the manual lever position sensor could be causing the issue.
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Wouldnt there be a constant missfire though, it has the 460 and it’s OBDI, I don’t believe there are missfire codes, all the codes it throws is for my egr delete and then sometimes for the evap
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
I really don't think that's the problem.
Bingo! Misfire is likely the problem.
The other problem is that the software in these early vehicles upshifted to overdrive at too low speed. This causes chugging and sometimes misfire. If you were to turn off overdrive at lower speeds I think you'll never see this problem again.
The other problem is that the software in these early vehicles upshifted to overdrive at too low speed. This causes chugging and sometimes misfire. If you were to turn off overdrive at lower speeds I think you'll never see this problem again.
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I really don't think that's the problem.
Bingo! Misfire is likely the problem.
The other problem is that the software in these early vehicles upshifted to overdrive at too low speed. This causes chugging and sometimes misfire. If you were to turn off overdrive at lower speeds I think you'll never see this problem again.
Bingo! Misfire is likely the problem.
The other problem is that the software in these early vehicles upshifted to overdrive at too low speed. This causes chugging and sometimes misfire. If you were to turn off overdrive at lower speeds I think you'll never see this problem again.
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