Having problems with your 1999 Oldsmobile Alero ?

I HAVE A 2000 ALERO.. MY HEATER IS NOT WORKING AND MY CAR IS OVER HEATING.. WHEN MY CAR IS COLD AND I FILL IT WITH WATER, WITH THE CAP OFF, I THEN TURN MY CAR ON AND THE WATER DOES NOT PUMP UP AND THEN I PUT MY HAND OVER THE COVER AND I DO NOT FILL THE PRESSURE OF THE PUMP WORKING... WOULD THAT BE MY WATER PUMP NOT WORKING OR MY THERMOSTAT? OR BOTH?...BUT WHY IS MY HEATER NOT WORKING AS WELL???

Posted / edited by AnonymousUser on : 18-11-2019

Answers :

Hi there camcam,

Ok, first off the cooling system has to be full and circulating for the heater to work. When we get the rest of it solved, the heater will take care of itself.

Now the overheat problem. We need to determine if the engine is overheating because of lack of coolant or the lack of coolant is because of the overheating (Boiling off).

If you have to put in any significant amount of water on a regular \015\012basis, it has to be going somewhere. If there is a pool of coolant \015\012forming under the car, there's a leak. You need to locate it and act according to where you find it.

\015\012
    \015\012
  • Radiator - weld or replace
  • \015\012
  • Hoses - replace
  • \015\012
  • Water pump - replace (check fan if attached, for balance)
The thermostat is a temperature triggered valve that periodically routes coolant circulation through the radiator. This allows hot water from the engine to be exchanged with cool water from the radiator.

A malfunctioning thermostat doesn't allow the heat exchange process, the engine overheats, coolant turns to steam....

Although rarer, the same result occurs if the water pump does not circulate coolant. When a water pump fails, it's usually leaking through a shaft seal.

So, if you don't find a leak, the thermostat is the first (and least expensive) thing to address.

I hope you find this to be instrumental in solving your problem.

Best regards
Mike


Both thermostat first then the water pump.\012
\012Hope I helped\012Dr Reed
Repair Help & Product Troubleshooting for 1999 Oldsmobile Alero

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