1990 Cadillac Eldorado Questions

Get answers to questions about your 1990 Cadillac Eldorado at RepairPal. Find solutions, diagnose problems and get back on the road.

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dash lights don't work

1988 chip key

I need to know how to put them on.

just overheat when I run the AC when I don't run it does not overheat

I changed my water pump, it now leaks out of 2 of the bolts on the top, I tighened them up, how do I stop it from leaking there, the pump is working

cause the lubricant to collect in such a way as to deteriorate the switch seals and result in a refrigerant slow leak? I have replaced the low pressure switch at least three times since purchase of a used 1990 Cadillac Eldorado with 29,000 miles on it. Present mileage is 113,650. Replaced the compressor and drier in April 2014. Refrigerant leaked out by mid November. Had it recharged and it leaked out in one month. Service tech inspected all sources including evaporator drain lineed and sniffed it after charging it with 5 lbs. and found no leaks. Removed low pressure switch and found lubricant present. Is this simply poor GM engineering?

Passenger side, outside light on the front of the bumper

son used car and didn't know remote switch is in glove box so used key to open trunk also you aren't supposed to slam shut and he did. Trunk on left side is lined up perfect however otherside is about an inch high noticed black plastic piece gone it fits on close to top of trunk. Hard to explain part i used button in glove box and youcan hear it engage but trunk still not closing flush

Need to locate vacuum ports under dash & engine (I have been told). any hints for possible solutions?

I think it may be a problem with twilight sentinal sensor but how do I check (Mostly locate) and/or repair?

trunk pulldown motor won't work

there is pressure but no power to stop the car. The repair shop said the brake booster shorted out when the alt. went out. I only had the car running for 2 minutes tops when the alt went out. Is this possible and is the part really $2700.00?

how do i figure if it is the switch or something else? I did try another switch from a junk yard.still nothing.they do go on manually.