Overdrive Shimmy
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Overdrive Shimmy
My E350 starting doing this thing when it kicks into OD. Between 40-55 mph the engine shutters. If I gas it, or let off, no problem. I checked and cleaned connects to the trans. I really think this is a spark or maybe fuel delivery issue. Of course, not a single code being thrown. Anyone seen this???
Hotshot
Joined: May 2003
Posts: 11,141
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From: south louisiana
Does it sound like you're running on the rumble strips cut into pavement ? If it does, a bottle of Lucas Transmission Treatment will fix it. It's the solenoid inside the transmission that controls the OD function sticking. The Lucas treatment will free up the solenoid.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,647
From: SE Florida
Does it sound like you're running on the rumble strips cut into pavement ? If it does, a bottle of Lucas Transmission Treatment will fix it. It's the solenoid inside the transmission that controls the OD function sticking. The Lucas treatment will free up the solenoid.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,647
From: SE Florida
No, I'm not. The E4OD DOES NOT have a solenoid that just controls the overdrive function. Only the 5R110 TorqShift does.
Do you really want to argue transmission function with me? That would be fun!
Do you really want to argue transmission function with me? That would be fun!
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Hotshot
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From: south louisiana
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I have the same issue when the converter locks up.
engine is smooth as anything except when the converter locks up at 45 or so. If i step on the brake, the "solenoid" releases and it is fine again.
My tranny also has a very abrupt drop into and out of converter lockup mode.
As said earlier, tranny is great otherwise.
Mark, if the 4r70 doesn't have a solenoid, what initiates converter lock up?
engine is smooth as anything except when the converter locks up at 45 or so. If i step on the brake, the "solenoid" releases and it is fine again.
My tranny also has a very abrupt drop into and out of converter lockup mode.
As said earlier, tranny is great otherwise.
Mark, if the 4r70 doesn't have a solenoid, what initiates converter lock up?
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,647
From: SE Florida
A solenoid initiates converter lockup. He was talking about overdrive. He doesn't even know the difference between converter lockup and overdrive, and he's trying to lecture me about how a transmission functions. He doesn't have a clue.
The shudder problem is NOT due to a gummed up solenoid. Once again, he's totally clueless.
There has been torque converter shudder issues with the 4R70W. It DOES NOT happen from a gummed up solenoid. He is just making that up because he doesn't know anything about the internals of a transmission.
The cause of torque converter shudder is a change in the frictional characteristics of the ATF. As the fluid ages it changes and it affects how the PID controller in the PCM controls the converter clutch. New fluid fixes this, and probably Lucas fix it, too. If the converter is allowed to shudder long enough it will damage the converter and it will need to be replaced.
The shudder problem is NOT due to a gummed up solenoid. Once again, he's totally clueless.
There has been torque converter shudder issues with the 4R70W. It DOES NOT happen from a gummed up solenoid. He is just making that up because he doesn't know anything about the internals of a transmission.
The cause of torque converter shudder is a change in the frictional characteristics of the ATF. As the fluid ages it changes and it affects how the PID controller in the PCM controls the converter clutch. New fluid fixes this, and probably Lucas fix it, too. If the converter is allowed to shudder long enough it will damage the converter and it will need to be replaced.
Fleet Owner
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From: Reynoldsburg, Ohio
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Does the abrupt drop into lockup mode also happen because of atf fluid issues also?
It is almost as if my van can wait to get into lockup mode in 3rd and 4th gears.
And when it is in lockup mode during steady state cruise conditions, i get a pretty harsh release when I step on the gas to accelerate. Almost as if it is fighting the release. If I tap the brake before I hit the gas, it is a much gentler release.
Isn't it amazing how some people think that they know everything?
It is almost as if my van can wait to get into lockup mode in 3rd and 4th gears.
And when it is in lockup mode during steady state cruise conditions, i get a pretty harsh release when I step on the gas to accelerate. Almost as if it is fighting the release. If I tap the brake before I hit the gas, it is a much gentler release.
Isn't it amazing how some people think that they know everything?
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
A solenoid initiates converter lockup. He was talking about overdrive. He doesn't even know the difference between converter lockup and overdrive, and he's trying to lecture me about how a transmission functions. He doesn't have a clue.
The shudder problem is NOT due to a gummed up solenoid. Once again, he's totally clueless.
The shudder problem is NOT due to a gummed up solenoid. Once again, he's totally clueless.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
I don't see you adding anything constructive to the problem. So maybe you should butt out before getting your feelings hurt.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Does the abrupt drop into lockup mode also happen because of atf fluid issues also?
It is almost as if my van can wait to get into lockup mode in 3rd and 4th gears.
And when it is in lockup mode during steady state cruise conditions, i get a pretty harsh release when I step on the gas to accelerate. Almost as if it is fighting the release. If I tap the brake before I hit the gas, it is a much gentler release.
Isn't it amazing how some people think that they know everything?
It is almost as if my van can wait to get into lockup mode in 3rd and 4th gears.
And when it is in lockup mode during steady state cruise conditions, i get a pretty harsh release when I step on the gas to accelerate. Almost as if it is fighting the release. If I tap the brake before I hit the gas, it is a much gentler release.
Isn't it amazing how some people think that they know everything?