E4OD / 4R100 Transmission Slipping as i accelerate!
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New User
Joined: Apr 2004
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E4OD / 4R100 Transmission Slipping as i accelerate!
Hello,
I have a 99' Expy 5.4, and lately i have noticed a slip in the gears as i hit the gas. I will be compleatly stoped and when i accelerate the tranny will jerk a couple of times thru the low end gears. I have noticed this for about 5,000 miles now, i am currently at 77,885 miles. I replaced the tranny fluid but i did'nt drain the torque converter. I am hoping that someone will have some advice on how to improve my tranny proformance without buying a new one. Thanks...
I have a 99' Expy 5.4, and lately i have noticed a slip in the gears as i hit the gas. I will be compleatly stoped and when i accelerate the tranny will jerk a couple of times thru the low end gears. I have noticed this for about 5,000 miles now, i am currently at 77,885 miles. I replaced the tranny fluid but i did'nt drain the torque converter. I am hoping that someone will have some advice on how to improve my tranny proformance without buying a new one. Thanks...
Senior User
Joined: Feb 2003
Posts: 206
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From: Long Island, NY
Doesn't sound promising, I guess you can get it serviced at a reputable transmission shop to really know the answer. Personally I think it's most likely on its last legs. My 98's tranny was rebuilt before the warranty expired b/c I was getting similar problems and I was around 81,000 at the time.
Good Luck
Good Luck
Junior User
Joined: Mar 2004
Posts: 85
Likes: 2
From: Birmingham, AL
not sure you can do an entire tranny flush yourself. I had to take mine down to Oil express and let them hook it up to the transmission fluid exchange system. This machine actually sucks all the old tranny fluid out and replaces it with new. I'm pretty sure there is no way to get all the fluid out by any drain mechanism.
Sit. Stay.
Joined: Oct 2001
Posts: 18,308
Likes: 20
From: Washington State
The 4R100 (or most of them anyway) have a TC drain plug.
You can also read the How-to article on changing it yourself in the Articles section.
It was written by one of the Transmission Engineers at Ford.
You can also read the How-to article on changing it yourself in the Articles section.
It was written by one of the Transmission Engineers at Ford.
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Sit. Stay.
Joined: Oct 2001
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From: Washington State
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Mountain Pass
Joined: Nov 2002
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My 99 5.4 did the same thing. It would "slip" under a hard load like accelerating fast from a dead start or towing a TT. Here's a post I made back in July concerning the problem. It turns out it was the transfer case and a simply drain and refill solved my problem (at least so far). It cost me $240, but if I had known what the problem was I would have done it myself.
hope yours is as simple as this.
philip
hope yours is as simple as this.
philip
New User
Joined: Jan 2004
Posts: 2
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From: Texas
My 2002 with 50k miles is doing the same thing. Took it to a quick lube and had the tranny flushed with the machine, but didn't help. I spoke to a service manager at a local dealership and they told me it sounded like the torque converter itself. Not sure if they meant fluid or the actual unit.
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New User
Joined: Apr 2004
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Thank you everyone for your advice. I am going to try to change the Front & Rear Diff fluid and service the transfer case next as did 99expyTN. I will get to that this week. My problem sounds just like his almost exactly, so it doesnt hurt to try, its time to change the Diff' fluid anyway. Thanks...
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