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Sedans Cadillac DeVille 1994 transmission trouble
8 messages, Last post on Nov 27, 2009 at 11:26 PM
You are in the Cadillac DeVille Forum. Your Hosts are pat & karens
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!994 Deville concours shift from overdrive to 3rd on its own the Service Engine message comes on. car has 104000 miles on it .Any ideas? Fluid is up to top and foaming.
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Replying to: bigwheel55 (Sep 13, 2009 12:51 pm)
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Replying to: billymalone (Sep 21, 2009 2:29 pm)
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Replying to: bigwheel55 (Sep 24, 2009 5:38 am)
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Replying to: bolivar (Sep 27, 2009 12:44 am)
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Replying to: bigwheel55 (Sep 27, 2009 4:39 am) GM mechanic cannot find any leaks. Car shifts fine runs good 48,000 mi. Anyone have an idea where trans fluid may be going?
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Replying to: dansa2 (Nov 27, 2009 9:01 am) 1) Tranny fluid is cooled by running it thru a small tank inside the radiator. If this leaks inside the radiator, the tranny fluid mixes with the coolant. If this is your problem, you are probably also getting coolant into the tranny, and this is very bad. 2) I'm not sure about a Caddy. But most older trannys have a vacumn controlled modulator valve on the tranny. Look for a vacumn hose running to the side of the tranny somewhere, and it goes into the modulator valve. This valve can be removed. It has a diaphram inside - if the diaphram ruptures, tranny fluid can be pulled up the vacumn line and into the intake and burned like gasoline. |
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