Question about 1999 Oldsmobile Silhouette
I've ha the same problem replacin water pump sensors flushed it using PRESTONE SUPER FLUSH and replaced the dexcool fans work
After talkin to AUTOZONE they said check all ur lines for eact temp after been ran o idling come to find out my back heater core has a blocked line or isn't working gettin ready to bleed the PAIN IN THE REAR and see if I have to replace the 105$ part yay wish us luck!
Posted on Jan 31, 2013
The original water pump never had this problem but it's seal failed, but after replacing it with the "new style" pump it began acting up. All symptoms indicated that the pump was not working, expecially at low RPM. It was whipping air instead of pumping water. I have now replaced it (again) with the original style pump (a rebuilt) and the problem is gone. Meanwhile, because of the repeated overheating (lack of water circulation) my motor began to tac, tac, tac loudly. A think it is a valve lifter that had its oil fried or spring annealed. I wish it were something simpler. I still can't use the car.
Original pump is cast, with 9 vanes on a plate. New style is a six bladed fan made of pressed steel with no backing plate. It is more like a blender than a pump. It was sold to me as a proper replacement (new) and is stocked by more than one parts house.
I notice that other people with this problem have also changed their water pump. Did they also use the "new style"?
Posted on Feb 19, 2009
I have a 2001 premiere and i replaced everything u guys did and come to find out it was the lower intake so i replaced the lower intake gaskets and my overheating problem was over .
Posted on Feb 17, 2009
I have have the same problem with my 1999 Oldsmobile Silhouette. I solved the problem by adding more coolant. It has a slow leak some where that I have not been able to find. When the coolant gets low the temp. gauge heats up very quickly but then goes down quickly when you rev the engine. Adding coolant to the reservoir has fixed the problem until it gets low again.
Posted on Feb 10, 2009
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