The first thing I would have done is replace the thermostat and flush the system to make sure there was no blockage. Just use some extra wire to temporarily hook them directly to the battery to see if they work.ĭid you ever check and/or replace your coolant lid? By now, all of the aftermarket thermpstats should have this revised design.Ĭheck the radiator fan motors to make sure they are working. It says to replace the thermostat with a revised one that helps coolnt flow better. In the TSB it says the customer observes overheating when the temp is below 0*C (32*F) with the heater and fan on the highest setting when idling or driving slowly in traffic. im starting to think it needs a new motor or the radiator.ĭid you ever try replacing the thermostat? There was a TSB on the older 3.5L Intrigues that had the similar symptoms as you. took the water pump off and there was nothing wrong with it, 3 mechanics told me to put it back on. I hate this car now, i drained all the water out of the can and ran a 50/50 dexcool and water mix and the car still overheated.
Thats the next thing i was gopnna ask, where are the air purge valves on the 3.5? Your water pump will only help the steam find it's exit through the cap Since your cap vents at 15 PSI, in theory the majority of the water could boil out of your cooling system if the engine was ran long enough because when water boils to steam it expands. The water will vaporize upon contact, thus causing your current overheating problems to snowball since the steam does not have heat transfer properties of water in liquid form. Even at 15 PSI water boils at about 250*F. However, temperature of the ENGINE itself where the coolant passages run will exceed the boiling point of the water. The COOLANT temp still gets above 212*F even with a 50/50 mix of coolant/water and a properly functioning cooling system under normal operating conditions. Even then with the AC on your fans should already be running. Your Intrigue should be running below 212 anyway unless youre sitting still perhaps. Pressurizing the system increases the boiling point of water, I dont know the math on it. If the system is pressurizing properly running water shouldnt matter. People have had problems in the past with WPs, much moreso than radiators, couple that with the fact it was still overheating with the thermostat completely removed, sounds like a dying water pump to me.Īt the very least you could pull your existing water pump off and see what it looks like, directions dont look terribly difficult, and its not like you have any coolant to lose since you filled up with water. If youre refusing to take it too a mechanic, then you dont have much of a choice but to start replacing things. Im curious to know how you ran it without the thermostat in it as well, as its all one piece, and the thermostat itself didnt appear removable, but I could be mistaken. There you will find a discount code, its not much, but its better than nothing. If you want to order from RockAuto go to the last page of this thread:
2000 OLDSMOBILE INTRIGUE COOLANT RESERVOIR TANK PLUS
Right now RockAuto has a limited supply of water pumps for 29.99 plus shipping. The guy who had his pump fail in the middle of a road trip springs to mind.Ĭould be that your WP blades are shot to heck, or something like that. Water pump problems are not completely uncommon in the 3.5 I can think of a couple cases off the top of my head. What exactly did you do to the water pump to determine that its working fine?
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