E40D starting to give problems
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E40D starting to give problems
I've got a 1994 F-350 SRW crew cab, 460 w/E4OD trans with 113,000 miles on it. Recently I've noticed that at 40-45 mph and at 60-65 mph the engine revs up and transmission slips and then catches, maybe two or three times if I can't get off the gas quick enough. Took it to the Ford dealership and put it on the diagnostic computer and it showed nothing. The slippage began about 3 months ago, but only at 40-45 mph range. Trans fluid was changed at 85,000 miles and again at 105,000, fluid clean and no metal traces. We pulled our 30' 5th wheel 4500 miles from La. to Wyoming and back no problems. Problem started again and got worse driving empty on the interstate. I've got plenty of questions and no answers. HELP if you got time to read this long letter. Thanks.
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Joined: Feb 2001
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From: Missouri
E40D starting to give problems
Does it feel like your torque converter clutch is disengaging? You should notice about a 300rpm increase in engine speed when this happens. Or does it feel like it is coming out of gear? (Much higher rpm increase). If it is your TCC I can explain it for you. If its coming out of gear it might be time for a rebuild if the obvious has been checked
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E40D starting to give problems
Thanks for the reply. I don't have a tach to check rpm. Also this is the first automatic transmission I've owned, so I'm assuming that it feels like it is coming out of gear. The engine revs up but probably not over the 300 rpm's you mentioned. How hard it hits just depends on how fast I slack off on the accelerator. Also, in about the same period of time that this problem started, my gas mileage also started decreasing. It has dropped from 13 mpg to 10 mpg empty on interstate, and I even added a K & N air charger system and " cat back dual exhaust". I've driven vehicles with 460 cid long enough to not expect miracles with gas mileage, but it is going the wrong way while I'm trying to help increase it. Thanks for any help with this at all.
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E40D starting to give problems
I Took my truck in today to a transmission shop.After discussing the symptoms with the owner, he immediately diagnosed the problem as the MLP sensor. He told me that there had been 5 upgrades on this sensor since 1994. The problem is mainly due to moisture causing a false signal telling the transmission to downshift (rpm's increase like it going to downshift but it gets a different signal before it does). Part and labor cost around $120. I've driven about 50 miles so far and no problems, but it was only doing this erractically before. I guess time will tell. I'll keep everyone posted how this turns out. No one before had found or suggested this as the problem and it didn't show up on the diagnostic computer anywhere. Has anyone else heard of this?
Ford F-350 SRW Crew Cab 460 E4OD
Ford F-350 SRW Crew Cab 460 E4OD
Post Fiend
Joined: Feb 2001
Posts: 6,624
Likes: 8
From: Missouri
E40D starting to give problems
Never heard of that but it sounds good. Right on the money anyway if you ask me. I do know that they update the parts for that tranny all the time. Hope it lasts you a while before rebuild time.
