Question about 1998 Chevrolet Lumina
Check water pump for noises and leaks repair as required also make the thermostat is not stuck in the closed position.
Posted on Jan 27, 2015
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Posted on Jan 02, 2017
There is a good chance that your have a intake manifold gasket failure and your losing coolant through your intake gasket causing the overheating or your head gasket has gone bad causing your overheating and the lost of oil pressure. Check your condition of oil to make suer there is no coolant mixed with your oil and also check your coolant in the radiator when the engine it cold. Don't want you to get burning. This would be the worst thing that could be happening to your blazer, as for the over heating. You may be lucky that it's a bad thermostat and it's going to need to be replaced. The low oil pressure could be a bad oil pressure sending unit and that is located at the back of the engine block by the distributor or the oil pressure relief valve has gone bad and that is located at the remote oil filter line housing at the engine block, drivers side.
Good luck and hope it's not the intake,or head gasket. Thank you for using Fixya
Posted on Mar 09, 2010
I would put money on the thermostat as a first culprit. Water pumps usually fail in a leaking state rather than in a "not pumping water" state. In the current weather, there will be little harm in running without a thermostat to test it (or even longer if you want to). The thermostat is usually in a housing at the end of the top radiator hose. Unbolt the housing, pull the thermostat, make a new housing gasket out of a cereal packet and take a drive out.
If it works, go buy a new thermostat and gasket at your leisure.
Posted on Jul 26, 2011
sounds like possibly head gaskets, when you overheated probably warped heads causing coolant in oil and coolant in cylinders therefore partially hydrolocking...antifreeze does not compress like fuel vapors .check oil and see if looks like creme to light chocholate color. this means coolant in oil, this is very ******* bearings, eats them up and if thats the problem you loose oil pressure cause bearings are sloppy from being worn. Bottom Line.you might be looking for another enj.or rebuild
Posted on Jan 05, 2012
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