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Old 07-08-09, 05:33 PM
abs abs is offline
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Cadillac(s): 1998 Deville Base
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Need a little help - '98 Deville Engine Mount

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Hi, I'm trying to determine if I have a bad engine mount. I hear, and feel, a really bad vibration under the car (seems to be coming from under the firewall) under heavy acceleration in 1st gear going up a hill at about 10mph and also sometimes under full throttle in second gear on a straight away. I've done the "power brake" test to see if the engine moves and the front of it does shift up at least a couple of inches, perhaps even 3 inches during the test. Does anyone know how much movement I should be seeing during this test? I'm guessing a bad mount but could also be a bad converter I suppose. The car only has 36k original miles on it!

Thanks,

Andrew