RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Forum for discussions regarding the rear wheel drive Pre80s-1984 DeVille
and Fleetwood, 1985-1996 Fleetwood/Brougham. | Cadillac Forums: 1979 DeVille transmission slipping/vibrating. 
11-04-09, 10:20 PM
|  | Redneck with class Cadillac(s): 1990 350 Brougham (Its big), 1988 Mark VII LSC (Its fast)  | | Join Date: Aug 2007 Location: Woodridge, Illinois Age: 19 | | | Re: 1979 DeVille transmission slipping/vibrating.
$1100 is a little much, IMO. The trans rebuild on my FWD '88 Fleetwood was $1400 and it takes several hours in labor just to get it out of the car. Its way easier to get it out of a RWD car.
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11-04-09, 10:23 PM
|  | GM RWD V8 addict Cadillac(s): 81 FWB 2DR, 65 Impala, 95 SS, 71 Pontiac, 94 Caprice, 92 RMW | | Join Date: Sep 2006 Location: Ontario, Canada Age: 37 | | | Re: 1979 DeVille transmission slipping/vibrating.
Not to mention that a TH400 is very easy to rebuild, and the parts are not expensive. |
11-07-09, 09:48 AM
| | Cadillac Owners Fanatic Cadillac(s): 1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green) | | Join Date: Mar 2006 Location: Western Massachusetts | | | Re: 1979 DeVille transmission slipping/vibrating.
I'm sorry I'm so late on this post. If your trans is bad, the fluid would have a definite odor to it. I can't describe it, but it's something like a cross between burnt toast, hot brakes, and cooked oil. The whine your hearing is your pump cavitating. Your filter is clogged and it is probably from your disk material.
If there is metal in your pan, you've got the plates and disks down to metal to metal. You can usually see evidence of this in the fluid. The fluid will be dark and you will see both dark particles and metal chips in it.
You can get a TH400 made up by JET or other trans specialists for around $1100. |
11-07-09, 10:27 AM
| | Cadillac Owners Fanatic Cadillac(s): 1977 Coupe (blue), 1977 Coupe (yellow), 1977 Coupe (green) | | Join Date: Mar 2006 Location: Western Massachusetts | | | Re: 1979 DeVille transmission slipping/vibrating.
If you were closer to me, I have a working used TH400 I could sell you. Check salvage yards. You should be able to get one for $400. You can use one from a Buick, Pontiac or Olds. The Pontiac's used a stiffer spring under the pressure control valve in their performance models, so the shifts would be a little harder. | | Cadillac Discussion Tools | | | 
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