1998 Nissan Altima Cooling system

ANN_4018

MEMBER
1998 NISSAN ALTIMA
4 CYL
AUTOMATIC
255,000 MILES

After replacing the radiator and thermostat the engine is still not cooling with in a mile it is running hot. Please help!

Thursday, August 21st, 2014 AT 11:55 AM

3 Replies

HMAC300

MECHANIC
48,601 POSTS

If thermostat was replaced was it put in upside down? If not the have the coolant system pressure checked it may be a head gasket or something cracked like a head.

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Thursday, August 21st, 2014 AT 11:57 AM

ANN_4018

MEMBER
2 POSTS

Thank you for your prompt response, how would I know if the thermostat was replaced upside down? How would I know if there is a cracked head gasket?

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Thursday, August 21st, 2014 AT 12:06 PM

HMAC300

MECHANIC
48,601 POSTS

If the thermostat was done by a pro then I doubt it but you would have to take it out and look is the only way. A pressure test on system will tell if there is an internal leak like a head gasket maybe coolant in cylinder etc. Cracked head would be after you take the head off which I'm assuming it's not.

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Thursday, August 21st, 2014 AT 3:19 PM