normal is 196 - 199 cruising on freeway. in town, stop & go traffic normal is 203 - 215. fans only kick in at 221 in my pearl car. My white one, the fans kink in about at about 228. both are 96's. freeway tem same in both cars.
193 to 210
I have a 98' cadillac deville and it should constantly read around 197-201 when you are driving. It will definitely increase when you come to rest: example at a street light. something is definitely wrong and should be checked.
Linked is the diagram for a 1976 Cadillac DeVille, 1977 should be roughly the same...
You should check out the Cadillac Deville suspension conversion kits at strutmasters.com If you can do brakes you can install their conversion kits yourself. http://www.strutmasters.com/cadillac-deville-suspension-s/42.htm
your local auto parts store should have a guide to replacing. or look in your manual
Yes, it should but watch out for different features in each door like heated rear seats etc.
A 1990 Cadillac Deville air conditioner should hold 46 oz. R12 Freon. This should be verified through the owners vehicle manual.
5x115 Center bore should be 70.3
It is important to maintain the fluid levels of the vehicle. A 1995 Cadillac Deville will take any general power steering fluid.
Should be two front and rear of engine
Its the one that is stated on the owners manual...
While any competent shop should be able to service this, a Cadillac dealer will have the most direct experience.