QuestionI have a caddilac brougham 1992 and it started over heating and leakin water. I already change the thermostat and it still is over heating and making a weird noise when I drive it and water is leaking and I have to put water in the reserver every other day. What can be wrong with it please help me!
AnswerHello,
You have major problems. Aluminum engines cannot be over heated even a little bit. Dealing with these over heated engines is a challenge. By a guess at minimum, you need head gaskets, possibly you have a cracked block not the cause, but the effect. Even at that, you still have not fixed the over heating issue and these engines are trouble. They have small cooling jackets that are easily plugged in the engine. Could be plugged radiator, bad water pump fins,fans not working. Bad radiator cap.
Now, here is an even worse problem--you are not going to find a good engine in the junk yard either because 99.9% have been over heated.
These engines literally melt from being over heated. These are not your old cast iron Chevy engine that you could get by with running hot.
GM should have put a warning sticker in these in which if the engine reaches over 220 degrees shut it down.
The Chevrolet Vega from the factory used oil. If low on oil, it would shut down. They should have done the same thing to Cadillacs over heating, but then they would not be able to rip people off for a brand new $4,000.00 crate engine.
Stop leak is not going to help you and just make it overheat quicker by gumming up the inside of the engine including the sensors. Water should not be used because the boiling point is only 212 degrees. Anti freeze/coolant increases the boiling point.
I really wish I could give you better news, but I gave you an honest answer. I have owned over 20 Caddys. Worked on Caddies since the late 70s.
I think whether you can afford it or not, you need to find another car. Head gaskets installed could run you from $1,000.00 to $1,500.00 and you still haven't fixed the over heating issue in which who knows what it will cost and that all assumes the engine block isn't cracked.
Personally, I would not dump any more money in it and try to find a cheap replacement. Your days are numbered with this car and your weird noise might even be a melted piston wanting to come out. I do not Know.
Something just occurred to me with all the goofy names Cadillac did back then. Is this a rear wheel drive Caddy? If so, it may not have the aluminum engine. It may have an Olds v-8 in it. That would be a cast iron engine and the results are not as much doom, but I still would be looking at head gasket(s). The big old body Fleetwood Brougham rear will drive had a cast engine and at least they did not self destruct from over heating like the aluminum engine in them.
What is the engine in your car?
I wish you luck.
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