Hello all,
I am in need of some help. I have a '99 Olds Intrigue with 100,000 mi. I took it to the shop to have the water pump changed and the radiator flushed, when I got it back it began to overheat. Since that time the shop has changed the thermostat, installed two different water pumps, changed the radiator cap, radiator hoses, and some kind of sensor. The weird part of it overheating is that if you put it in neutral and rev the engine to 3500 RPM, the tempurture immediately comes down. The mechanic at the shop said that he has never seen anything like it in his 25 yrs of working on cars. He also thinks that it is either a head gasket leak or a clogged radiator. I have been renting a car for almost two weeks and can no longer afford to replace needless parts, or guess at the problem.

Has anyone ever heard of a problem like this, or offer any insight into what the problem is. Any kind of help would be VERY helpful.

Thanks,
Loren

do any puffs of white smoke come out of the exhaust?

are there any air bubbles in the system?

No, there is no white smoke or air bubbles.

:bump: for you.

there have been a couple members in the past who've had overheating issues with their Intrigues. sounds like you've already put a lot of money into trying to solve the problem; not sure what else to cover.

hopefully someone with more insight will chime in here (Txchevy.. Lordblitz..).

My ex had the exact same problem with her sunfire. Driving the car around actually helped DROP the temp, irrelevant of how hard she was on the engine.

Get an IR thermometer on the rad (mechanic should have one). Check temps. Ignore gauge (unless check engine light starts flashing).