Question about 1998 Nissan Altima

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1998 altima overheating

My altima (2.4) has been overheating recently, some say head gasket but there is no oil/antifreeze mixture so i question that fact, also my resoivor bubbles when this happens, could this just be the issue of a thermostat?

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It may be the thermostat, but you should also check:-
1) Coolant level is at correct level (full) when checked cold- prior to running,
2) Cooling fan/s are running normally as they should when coolant temp rises,
3) A coolant hose on the suction side of the water pump is not collapsing (due softening) causing restricted coolant flow,
4) Radiator coolant core is not blocked, or radiator heat dispersion air fins blocked with insects/grass,
5) Engine does not have other running problems that cause it to overheat.

Posted on Jun 25, 2009

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How do you know if you have a blown head gasket?


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If white smoke is present, check to see if the proper amount of antifreeze is inside the radiator and the overflow bottle. Also check to see if antifreeze has contaminated the engine oil. You can look at the engine oil dipstick, or look at the under side of the engine oil filler cap. If the oil is contaminated with antifreeze, it will have the appearance of a chocolate milkshake. Do not start the engine if the oil is contaminated with antifreeze, as serious internal engine damage can result.


How did antifreeze get in the oil or cylinder in the first place? The engine probably overheated and a head gasket failed due to excessive heat, thus allowing antifreeze to enter the cylinder (Where it is not meant to be).

More references in here.


Hope helps with this (remember rated this help) Good luck..

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