Trans is slipping, I need HELP. - Ford Powerstroke Diesel Forum
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Old 12-25-2012, 06:16 PM
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Trans is slipping, I need HELP.

I have a 99 f250 7.3 with 95k miles. Just yesterday the trans started slipping. The thing that gets me is the trans only slips once in a while. It doesn't matter if the trans is hot or cold the slippage seems intermit ant. Sometimes I can leave a light and the truck takes off fine, the next light the truck will stay in one spot, in drive, and the rpm's will shoot threw the roof as I try to take off.

It's got me confused, why would the trans slip sometimes and not other times? Torque convertor?, trans itsel?

All fluids and filters were just recently changed by ford.

Any advice is greatly appreciated.
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Old 12-25-2012, 06:28 PM
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Was it slipping before it was serviced?
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Old 12-25-2012, 06:34 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
Was it slipping before it was serviced?
That's hard to say. I just bought the truck off a friend. He got the truck completely serviced. I have the receipt. He said he never had a problem with any slippage. I registered the truck yesterday and the trans is slipping.

Were both just trying to figure out what it could be....
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Old 12-25-2012, 06:41 PM
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Quote:
Originally Posted by D555F View Post
That's hard to say. I just bought the truck off a friend. He got the truck completely serviced. I have the receipt. He said he never had a problem with any slippage. I registered the truck yesterday and the trans is slipping.

Were both just trying to figure out what it could be....
If they replaced the filter, it's possible it's not seated properly, filter is cracked or they didn't pull the old seal out before installing new filter. If it's sucking air, that will cause a slip. Is the O/D light flashing?
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Old 12-25-2012, 06:46 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
If they replaced the filter, it's possible it's not seated properly, filter is cracked or they didn't pull the old seal out before installing new filter. If it's sucking air, that will cause a slip. Is the O/D light flashing?
They did replace the filter. With new fluid. I will check the filter tommorow. Would that cause the trans to slip at random times? It's got me confused because it only does it when it wants to. Any other ideas of what you think it sounds like? One mechanic said the torque convertor could be going?
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Old 12-25-2012, 06:47 PM
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O/D Light is not flashing that I saw.
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Old 12-25-2012, 06:50 PM
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I'd be taking it back in where it was serviced and tell them that it started after it was done.
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Old 12-25-2012, 07:00 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
I'd be taking it back in where it was serviced and tell them that it started after it was done.
The service was done one dec 2. The truck was driven and drove fine up until yesterday. I drove the truck to upstate NY and back to jersey and was fine. It came out of no where
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Old 12-25-2012, 07:12 PM
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That would have been nice info to include from the beginning.
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Old 12-25-2012, 07:23 PM
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Quote:
Originally Posted by dhanna6powerstroke View Post
That would have been nice info to include from the beginning.
Regardless of what I said in the first post. The trans is slipping. I just included it was serviced recently. I just don't no what to check first. Maybe changing the filter will help?
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