4R100 slipping I think - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 8 (permalink) Old 07-02-2012, 11:39 PM Thread Starter
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4R100 slipping I think

Today, I went out towing my 12k RV and after about 50 miles of 70mph at 150* from the test port, she heated up to 210 in about 12 miles of 75* weather. Some hills in there but you don't feel any slip when towing, just overheats. Kicked it out of overdrive and that didn't help either. Did it twice on me so I dropped the trailer and came home. Tranny temp stayed at 150* but at 75mph up a hill, I can make it slip so how much life does it have left? Can I go 1000 miles empty to get a BTS?

It has an ARI TC and JW VB. Recently had Jody up the line pressure to prevent slipping in higher settings but now I think it is the tranny and nothing tuning can do about it.

REBORN 20 Over on 3/2/11- Pics in gallery- 2000 F250, Auto, 38r, Full Force 238cc/100%, TE 17* hpop, DP F5,HI,60T,80E,120R,140A, Studs and 910's with DI PR's, JW VB in 2nd stock tranny, Walbro 392, Bellowed, In-Tank, Pre-Pump, boost fooler, and RR. Air Dog, SS cover, 6.0 TOC,4" straight piped and guages, 6637, coolant filter, 4" Lift on 33's.
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post #2 of 8 (permalink) Old 07-07-2012, 03:19 AM Thread Starter
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Re: 4R100 slipping I think

4 days and not one reply. This is why people post things like this tranny issue in the tech or aftermarket sections.

REBORN 20 Over on 3/2/11- Pics in gallery- 2000 F250, Auto, 38r, Full Force 238cc/100%, TE 17* hpop, DP F5,HI,60T,80E,120R,140A, Studs and 910's with DI PR's, JW VB in 2nd stock tranny, Walbro 392, Bellowed, In-Tank, Pre-Pump, boost fooler, and RR. Air Dog, SS cover, 6.0 TOC,4" straight piped and guages, 6637, coolant filter, 4" Lift on 33's.
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post #3 of 8 (permalink) Old 07-07-2012, 03:42 AM
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Re: 4R100 slipping I think

yea sounds like slipage, the trans should only be 60-100* above the outside temp. when towing. u should be able to make it to bts unloaded. the extra line pressure can hurt the trans u may want to have jody take that back out once u get the bts in.

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post #4 of 8 (permalink) Old 07-07-2012, 11:58 AM
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Re: 4R100 slipping I think

Quote:
Originally Posted by kilapapipa View Post
Today, I went out towing my 12k RV and after about 50 miles of 70mph at 150* from the test port, she heated up to 210 in about 12 miles of 75* weather. Some hills in there but you don't feel any slip when towing, just overheats.
When did it overheat? 210F is normal when towing and there are some hills.

Quote:
Originally Posted by powerstroke02 View Post
yea sounds like slipage, the trans should only be 60-100* above the outside temp. when towing.
I don't agree. It should be 60-100F above outside temperature unloaded. It will be higher when towing.

If the trans is slipping the fluid will stink and be brown or black. It only takes a few seconds of slippage to destroy a clutch and burn the fluid. If it is slipping the fluid will show that.

If you don't like to see 210F you might want to replace the air to oil cooler with one from a6.0L truck.

Mark
Former Ford Automatic Transmission Engineer

The good thing about science is that it's true whether or not you believe in it. ― Neil deGrasse Tyson
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post #5 of 8 (permalink) Old 07-07-2012, 01:18 PM Thread Starter
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Re: 4R100 slipping I think

I have the 6.0 cooler and that is why I say the temps are too high too fast. I don't usually see 180 on the same road with the same load in 90* heat so something is definately not right here. I ran 150 on the road for 50miles before stopping for fuel and then in 12 miles, up to 210 quickly.

I haven't drove it in 4 days but I will warm it up to day and look at the fluid. I checked the level that day and it didn't seem discolored.

Thanks for the replys guys.

REBORN 20 Over on 3/2/11- Pics in gallery- 2000 F250, Auto, 38r, Full Force 238cc/100%, TE 17* hpop, DP F5,HI,60T,80E,120R,140A, Studs and 910's with DI PR's, JW VB in 2nd stock tranny, Walbro 392, Bellowed, In-Tank, Pre-Pump, boost fooler, and RR. Air Dog, SS cover, 6.0 TOC,4" straight piped and guages, 6637, coolant filter, 4" Lift on 33's.
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post #6 of 8 (permalink) Old 07-07-2012, 01:59 PM
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Re: 4R100 slipping I think

Id take it to bts. It'll make it. I drove mine for many miles with it slippin an bangin into gears. At the time i had no money to fix it. So i just put a used trans n last week with a little over 100k and put at RacerX converter n vb in and i have to say im am very pleased it shifts great.

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post #7 of 8 (permalink) Old 07-07-2012, 02:26 PM
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Re: 4R100 slipping I think

Quote:
Originally Posted by Smoothcriminal View Post
Id take it to bts. It'll make it. I drove mine for many miles with it slippin an bangin into gears. At the time i had no money to fix it. So i just put a used trans n last week with a little over 100k and put at RacerX converter n vb in and i have to say im am very pleased it shifts great.


If it is slipping like he says then he needs to get trans looked at since he has already done a vb & tc

To give you a little more faith I had a trans a few years ago that slipped so bad if you hooked up to it with a trailer the truck wouldn't even move. I drove it for about 3k miles with the trans fubard before it totally dumped out so I wouldn't think 1000 miles mores would be that bad on it. Especially since it is not getting overly warm imho



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post #8 of 8 (permalink) Old 07-07-2012, 03:08 PM Thread Starter
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Re: 4R100 slipping I think

Thanks for the testimonials guys. Sounds like I a can make it a while longer. The fluid is a bit brown and I have a burnt smell to it. Drives fine unloaded.

What if I replace the fluid and don't pull a trailer until I get to Ark.? I am going to call on Monday and see what their schedule is.

Funny thing here is I just got tired of keeping up the maintenance on my 28 year old boat that we use once a year if that and sold it just 2 weeks ago. Had other plans for the money but I guess everything happens for a reason.

REBORN 20 Over on 3/2/11- Pics in gallery- 2000 F250, Auto, 38r, Full Force 238cc/100%, TE 17* hpop, DP F5,HI,60T,80E,120R,140A, Studs and 910's with DI PR's, JW VB in 2nd stock tranny, Walbro 392, Bellowed, In-Tank, Pre-Pump, boost fooler, and RR. Air Dog, SS cover, 6.0 TOC,4" straight piped and guages, 6637, coolant filter, 4" Lift on 33's.
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