Driveline funky *feeling*
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Senior User
Joined: Jan 2006
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Driveline funky *feeling*
Got a 94 F-150, reg cab, 2wd, 302/aod...
I noticed that when I shift into reverse, it will feel like the driveline has to make up for slack... Hard to explain, but its like something is worn out and has a bit of play.
it is only noticable when you first shift into reverse. once it goes through slack, the driveline feels tight as normal.
In drive (all forward gears) there is no *driveline slack* even when stop and go commuting e.i. driving somewhere parking, restarting, putting it into drive and taking off etc..
But when I want to stick it in reverse it feels kinda like the driveshaft has about 1/10th play.
Is this normal? or is this a symptom of something on its way out.. the truck drives fine, seems to shift gears fine, cant detect any tranny slipping etc..
thanks for any help.
I noticed that when I shift into reverse, it will feel like the driveline has to make up for slack... Hard to explain, but its like something is worn out and has a bit of play.
it is only noticable when you first shift into reverse. once it goes through slack, the driveline feels tight as normal.
In drive (all forward gears) there is no *driveline slack* even when stop and go commuting e.i. driving somewhere parking, restarting, putting it into drive and taking off etc..
But when I want to stick it in reverse it feels kinda like the driveshaft has about 1/10th play.
Is this normal? or is this a symptom of something on its way out.. the truck drives fine, seems to shift gears fine, cant detect any tranny slipping etc..
thanks for any help.
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One more thing,
when it gets REALLY cold out, I start the truck and let it warm up for a few mins (these fords seem to take forever to get warm in dead winter)..
Once I take off it feels like the truck is sluggish. the power feels like its there, it seems like there is a bit of drivetrain resistance.. once warmed right up it feels snappier..
My first guess would be the wheel bearings might be a bit dry and in need of a replacement or repacking.. also possibly the rearend might not have had a fluid swap in a long time..
The wheel bearings are a must service, what do you guys think?
still having fun working out all the little kinks from my recent truck purchase. One good thing is this truck is about 10,000 times easier to work on than my previous (and newer) pontiac grand am
when it gets REALLY cold out, I start the truck and let it warm up for a few mins (these fords seem to take forever to get warm in dead winter)..
Once I take off it feels like the truck is sluggish. the power feels like its there, it seems like there is a bit of drivetrain resistance.. once warmed right up it feels snappier..
My first guess would be the wheel bearings might be a bit dry and in need of a replacement or repacking.. also possibly the rearend might not have had a fluid swap in a long time..
The wheel bearings are a must service, what do you guys think?
still having fun working out all the little kinks from my recent truck purchase. One good thing is this truck is about 10,000 times easier to work on than my previous (and newer) pontiac grand am
Post Fiend
Joined: May 2004
Posts: 11,289
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From: Lakewood, Ohio
look at sticker on your door, if you have an E for trans. than you have an E4OD.
another way to tell is if you have the overdrive button on shifter end.
an AOD is not offered in the 94 F150.
i am just trying to help you when you go to get parts for your trans.
another way to tell is if you have the overdrive button on shifter end.
an AOD is not offered in the 94 F150.
i am just trying to help you when you go to get parts for your trans.
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Could it be a situation with worn old U-joints loading up when going into reverse?
Whats the factory driveshaft made from? the driveshaft appears to be REALLY clean, like someone may have put an aluminum shaft on the truck at some point.
Whats the factory driveshaft made from? the driveshaft appears to be REALLY clean, like someone may have put an aluminum shaft on the truck at some point.
Last edited by Galizien; Feb 20, 2006 at 07:23 PM.
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Posting Guru
Joined: May 2003
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From: Sunny tourist infested FL
My 94 did it both going into drive and reverse. When I had the tranny rebuilt, it did not do it as much. It felt just you as described, like the slack in the driveline was being taken up.
My u-joints were fine. We have a few 94 f-150 at work, some do it some don't.
I believe your tranny is a 4RW70. Post your tranny code.
I had the tranny re-built because of slow shifts and slipping, going into overdrive.
My u-joints were fine. We have a few 94 f-150 at work, some do it some don't.
I believe your tranny is a 4RW70. Post your tranny code.
I had the tranny re-built because of slow shifts and slipping, going into overdrive.
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Hotshot
Joined: Sep 2001
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If your trans code is U then you have an AODE or 4R70W. If it is a 302 with automatic then it is bound to be this transmission. From what I understand this transmission is the same as the one in the cars: crown vics mustangs etc, but it has a different ratio. I have never seen an F150 with a 302 and an E40D. I have seen what you have described on several trucks. My truck does it sometimes. I don't think it is anything to worry about. Servicing the trans as well as the other things you mentioned couldn't hurt anything and might help.
Senior User
Joined: Oct 2004
Posts: 371
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From: Wetaskiwin, Alberta
Mr. Galizien, have you found your tranny code yet? My '91 with an E4OD does exactly as you describe and has done so ever since I acquired the truck - about four years ago. I have serviced the diff., transmission and changed out the u-joints and haven't noticed any significant change in the behaviour of the way the tranny goes into reverse. Yes, it does seem like there is some slack there and I believe that Quicklook2 will give us an answer to solve the problem - Right Quicklook2?
Cheers!
Mike
Cheers!
Mike
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Joined: Feb 2006
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My 94 automatic makes a rumbling noise when I come up on a slight hill. This will happen at 40mph or 70 mph. Likeit is having trouble down shifting. Almost sounds like it does when you are in a manual and you fail to shift down when stopping. Other than that the Truck runs fine. Kind of pricy driving it with 12-18 MPG. But I really like my truck.
Any Idea's
Any Idea's
Post Fiend
Joined: May 2004
Posts: 11,289
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From: Lakewood, Ohio
u = 4r70w auto. trans
18= 3.08 non-limited slip rear
133 = wheelbase
as texasguy said if you have a U then you have an AODE or 4R70W.
for the rest of your codes go to articles and specs and you will find a wealth of information.
18= 3.08 non-limited slip rear
133 = wheelbase
as texasguy said if you have a U then you have an AODE or 4R70W.
for the rest of your codes go to articles and specs and you will find a wealth of information.
Last edited by quicklook2; Feb 21, 2006 at 05:32 PM.