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V8spence
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Auto Box

Hi All,
My auto-box has just enjoyed a new filter and top up but she engages fine but won't hold herself on a slight incline in drive.
She will roll back very easy until I rev her up.
If I put any more fluid in it leaks out the speed drive hole and the other day, she was smelling warm and drive was very slack, took a lot to get up a hill.
I am going to fit an oil cooler and remove the pipes from the radiator as a starting point in case she is getting warm, any other clues?
Cheers,
Spence

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http://www.forest-kustoms.co.uk

Wed 14 Jul 2010 @ 13:41 View V8spence   Email V8spence   V8spence Home Page   Edit this messageQuote this messagePMQuote this message
JimBeam
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Oil cooler generally sounds like a good idea.. But if the only problem is that it rolls backwards on a hill, I wouldn't worrry too much yet. Has it ever been different or has it always been like that since you've had it? What engine have you got driving it?
Thu 29 Jul 2010 @ 21:28 View JimBeam   Email JimBeam   Edit this messageQuote this messagePMQuote this message
V8spence
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She is a 2.3 slant petrol, always been like it in the 12 months we have owned it to be honest.
I must admit, I have only ever had smaller automatics and this being such a big beasty I can appreciate the 2.8 tonnes of camper (and some) will move where gravity wants it to go.

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Fri 30 Jul 2010 @ 11:14 View V8spence   Email V8spence   V8spence Home Page   Edit this messageQuote this messagePMQuote this message
JimBeam
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I don't have that much experience with automatics, but in the past few months being in the USA I have had to work on several of them. Most auto cars I've driven here do actually roll back on hills, some more and some less. I drove a Buick that rolls back on anything that's not flat, from New York to California, south down the coast and back to Illinois via Texas, and the gearbox still works exactly the same. I changed the ATF and filter before the trip and haven't had to touch it since. That was 12000 miles ago..

It seems that on a used auto box you will have some slip well before the box eventually goes bad. But it also seems that auto boxes have a much shorter life than manual ones. Cop cars and generally heavy duty professional vehicles all seem to have transmission oil coolers, seems to increase the tranny's life. I doubt it would reduce the slip though. I wonder if your idle speed could be too low? Carb setting maybe instead of something wrong with the box?
Tue 03 Aug 2010 @ 18:59 View JimBeam   Email JimBeam   Edit this messageQuote this messagePMQuote this message
jeffo
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Lucas oil do a product to fix this!

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Tue 03 Aug 2010 @ 20:17 View jeffo   Email jeffo   Edit this messageQuote this messagePMQuote this message
V8spence
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Thanks for the replies guys.
My Buick never slipped but then they knew how to build back in the 50's!

What is that Oil from Lucas? is it a formula change or one of these horrible rubber attacking chemicals (shudders)?
I don't want to take the box out unless I have a replacement or a period of time where we wont use the camper as I have so many other jobs to do, things take longer than I intend (4 years ago I took my Buick apart, its still in bits).....
Cheers for all the help.
Spence

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http://www.forest-kustoms.co.uk

Wed 04 Aug 2010 @ 08:43 View V8spence   Email V8spence   V8spence Home Page   Edit this messageQuote this messagePMQuote this message
JimBeam
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Ha, well, there's a reason you still see them 50's vehicles running!

I think the Lucas oil product is a "stop-slip" additive, which I wouldn't personally put in. Same as the "stop-radiator-leak" additives..

Do you have an rpm meter? What's your idle set at? At what idle speed does it no longer slip?
Thu 05 Aug 2010 @ 00:20 View JimBeam   Email JimBeam   Edit this messageQuote this messagePMQuote this message
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