Question about 1999 Oldsmobile Aurora
I have changed the thermostat and the water pump but it is still overheating. It does good at speeds around 60 but anything around 70 or faster it overheats. It seems like it is either starving for fluids or the fans arnt kicking in all the time
If the previous suggestions don't help, you might want to check your coolant for bubbles; you could have a blown headgasket between the engine's water jacket and a cylinder.
If the gasket fails this way, it will force hot gases into the coolant path that will cause this rapid and intense heating.
The gasket does not have to be failed much to cause this and the early stages won't cause a cylinder to misfire but on cooling, the coolant can enter the cylinder and produce misfires for a few seconds when first started and this can show up as a fouling of one plug which can even show signs of rust if examined.
Also, check your oil dipstick for the color of your oil; it shouldn't look like Jergens lotion. At the same time, look into the coolant bottle to see what it looks like since a failed gasket can also cause oil to leak into the coolant.
Posted on Mar 11, 2009
Check for leaves obstructing radiator and between radiator and ac condenser. radiators on these vehicles are a bit small making every inch valuable cooling surface. I would also consider using some radiator flush to clean the inside of radiator core.
Additionally, be sure that your cooling system is full., running a bit low can also cause overheat.
cooling fans could actually be removed at speeds over 60...The air going through radiator at speed is likely enough to keep cool.
Posted on Mar 11, 2009
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Posted on Jan 02, 2017
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