I have a '99 Eldo w/82k miles - which developed an overheating problem last August - I added Thermalweld - THERMALWELD - LANDING PAGE - Head Gasket Repair | Thermalweld and have driven over 3000 miles since the conversion and have no overheating problems - call the company - you'll probably talk to Mr. Hooper - he is a chemist and developed Thermalweld 20 yrs ago - he has helped 100's of Northstar owners fix their head gasket/overheating problems - it was a better fix for $250 - rather than $3000 - I agree with all the forum experts that it may be a temporary fix....but I'll keep driving until it fails.
FWIW I've have had marvelous luck with Lucas. These snake oil in a can products have come a long way. For only a few bucks, I'd definitely give one of them a try before doing a head gasket job. Do a google search. Lots of success stories and Lucas is just one of the top rated brands.
Don't waste your time trying to replace parts or add crap to the cooling system. I'm pretty sure it'll end up being your head gasket. I spent over $5,500 on my 2002 Deville and finally got it to stop overheating, and YES it was the head gasket. Keep in mind I didn't have smoke coming out and no milky in the oil. I did buy a block tester and it didn't show signs the head gasket was bad.
It started out with a small coolant leak and of course, I'd top it off every so often. Then the coolant recovery tank would overflow and the car would overheat and the dash would tell me to shut off the a/c.
I had a feeling it was going to be the head gasket right from the beginning with all the research I did but was in denial and thought I'd get lucky by replacing other parts just so I wouldn't have to spend a fortune even though I ended up doing so in the end.
I took it to a mechanic and was first told first it was the "Coolant Recovery Tank" WRONG!!! Then I was told it was my radiator "WRONG!!! Then I was told to replace the cooling fans "WRONG!!' Then I was told to replace the cooling fan relays "WRONG!!" The list went on and on until I found a guy online that lives not too far from my house, he specializes on Northstar engines only and that's all he works on. I was quoted a price and of course, after he pulled the motor out the price went up because he found other parts and electrical items that needed to be replaced. I told him to go ahead, after all the car was 17 years old at the time last year so I might as well have him do it so it wouldn't have to be done at a later date. I know all of you are thinking I'm an idiot for spending all this money but the only reason I did was because the car only had 76,00 miles on it and it's a limousine. If it was a sedan I would have junked the car at the beginning. Anyway, I hope this helped you out and didn't upset you.
Hello everyone. I just took ownership of this 99 Deville Concours. Its been in the family since new and belonged to my grandmother, then my dad and now me. It is far from what cars im used too ( mostly Mercedes and BMW's ) but my dad gave it to me as gift. From what I can tell it will need some...
Long story short 1999 ETC. Some 11 years ago a mechanic installed the wrong orifice tube (correct one without adapter, my fault) ac issues then fixed.
Years later compressor fails. Replaced condenser, OT, dryer, compressor installed online filter. On the flush, gunk came out...
So, i own a deville and the engine is finally kicking the bucket. i was wondering if there are any other v8 engines that will fit into the car. if not, where should i go to get a non aluminum v8 engine?
Hey guys. I’m trying to get some assistance on what parts exactly do i need. Where i have placed aluminum foil at at my intake. So i can get get up and running properly again.
99 cadillac deville d'elegance
I noticed a potentially dangerous situation. At lower speeds around 20-30 mph sometimes when I totally let of the gas pedal the car continues on a steady speed almost like cruise control. if I tap the gas it usually drops down to normal operation. It also stops if you push the breake kinda hard...