Question about 2001 Oldsmobile Silhouette

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My 1998 oldsmobile sillihouette runs hot when i sit for a while. I've replaced all the fuses. Please Help...

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You may just need to service the cooling system. The antifreeze has a life expectancy and needs to be changed after a few years. If it's green antifreeze it should be changed once a year or 30,000 miles with  50/50 mix and if it's the orange antifreeze it's good for 5 years and 150,000 miles before replacement with a 50/50 mix. You need to flush the cooling system out and replace the antifreeze and you may also want to replace the thermostat which can be un pleasant if you have larger hands. The thermostat housing is under the throttle body and if you have the right tools and small hands you can remove it with out taking the throttle body off. If you do decide to change the thermostat, replace it with the fail safe thermostat just to make sure your not stuck on the side of the road. Good luck and hope this helps, keep me posted. Be glad to help and do not use 100% antifreeze, it will just gel up and you'll still over heat. 

Posted on Jun 23, 2009

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It is probably time to flush the engine and refill with 50/50 coolant/antifreeze. check the radiator too--- the grid may be clogged or the radiator internal water passages blocked. does the cooling fan come on at all? if not it would get hot driving too usually. take a look at the belt tension for the water pump also.

Posted on Jun 23, 2009

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I just worked on a 2001 oldsmobile sillihouette kept overheating after running for 15 minutes. It turned out the cooling system had air in it and just needed to be purged. I'm not sure if this is your problem but you might check to see if you have bleeder valves on your T-Stat housing or any of your water lines. If you do open them a little and see if air comes out. Be careful with HOT water if car has run awhile.

Posted on Jun 23, 2009

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