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Trans. slipping in reverse?

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Old Aug 16, 2007 | 09:49 PM
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Trans. slipping in reverse?

I have a '99F350 w/ AT. Trans seems to be slipping when I backup with a trailer hooked up. I haven't noticed any slipping in any forward gears. Fluid level is good and smells and taste ok also. 100,000 miles, filter was changed at 50,000. Would this be a valve or something more drastic?
 
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Old Aug 16, 2007 | 09:57 PM
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i have the same problem every morning i leave for work just when i go in reverse outta my driveway seems to slip and then catch i cant figure it out yet
 
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Old Aug 16, 2007 | 10:32 PM
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add me to the club
 
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Old Aug 16, 2007 | 11:16 PM
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Have y'all checked you slip joints? does it also clunk (or pop)when in drive going from a stop. If so your slip joints need to be packed with grease.
 
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Old Aug 16, 2007 | 11:46 PM
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I have the "clunk" when going from a stop. My problem in reverse may be a little different because the transmision seems to engage but I dont have any power until the accelerator is depressed a quarter to half way down. Very noticable when backing a heavy trailer, but also noticable when the engine is warm and backing. Could this be the same issue with the slip joints?
 
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Old Aug 17, 2007 | 03:23 AM
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not sure what you mean by heavy..but if you are backing up with a load you should use low rang...the trans is not that strong in reverse
 
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Old Aug 17, 2007 | 03:59 AM
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Originally Posted by ron's power stoke
not sure what you mean by heavy..but if you are backing up with a load you should use low rang...the trans is not that strong in reverse
What do you mean "low range"? AS far as I know I just drop it in R . My trouble is not in u-joints. You would have that problem-noise forward or back. I had to back a trailer about 1 block and I had to keep getting on the throttle to get it to hook up.
 
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Old Aug 17, 2007 | 04:02 AM
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put the truck in 4x4 low..no need to lock the hubs. are you backing up hill when this does it?
 
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Old Aug 17, 2007 | 04:06 AM
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Sorry--2WD.
 
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Old Aug 17, 2007 | 04:07 AM
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Originally Posted by tommyl
Sorry--2WD.

damn sorry lol how does the flued look and smell???

just looked at 1st post..flued is good....might be the revese clutches getting weak..
 

Last edited by ron's power stoke; Aug 17, 2007 at 04:10 AM.
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Old Aug 17, 2007 | 04:15 AM
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Would reverse clutchs be different than the others? I thought gearing, valves, etc. would make it go backwards, different clutch pack, that I don't know! Thats why I got on here and was asking. Thanks again.
 
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Old Aug 17, 2007 | 04:27 AM
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reverse gear is not as low geared as 1rst gear..its a little harder on the clutches..when ever i back up a big load i always put it in 4x4 low..takes a lot less peddle to get it moving.for you at this point it might be worth changing the flued and filter...
 

Last edited by ron's power stoke; Aug 17, 2007 at 04:29 AM.
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