PontiacBonnevilleClub.com

It's been awhile since I posted, and the car has seen some miles and is getting ready for mods and repairs but I've been trolling a lot and after a lot of fruitless searching I decided to post this

2002 Buick LeSabre Custom
98500 miles


I noticed about 2 months ago that my car was warming up a little faster than usual, and with it being the middle of a hectic N.E. Ohio winter I did not think much of it because the car was running under 200 degrees. Then until a couple weeks ago the temperatures warmed up and I noticed that the temp gauge was reading higher than it usually was, and the car's computer said the coolant temp was running between 215-225. At the time I was only able to check the coolant level, which was normal.

However, I did another check when the car was running around 195-200 and I noticed that neither cooling fan was running. I've only been able to check the fuses, which were fine, and the fans spun very freely, there wasn't any resistance whatsoever. But I also have no idea if that means they are dead or not. The only thing I haven't checked are the fan relays.

So I have a few questions:

1) The fans are currently dead as the car sits, do you guys think that the relays for both fans are shot or the fans themselves are gone?
2) What temp would turn the fans on if they were working properly?

Thanks in Advance

If the 2000+ works the same as the previous generation then the low speed fan won't come on until the coolant is 205 or higher. High speed comes on around 215 - 220.

If the fans were causing the problem then you'd probably have noticed that the engine temp is fine at highway speeds & gets high hot when sitting at traffic lights.

I'd start by doing a coolant flush & swap out the thermostat.

I believe its 212F for low speed and 227F for high speed..

Thermostat is the first thing I would check..