87 Maxima running hot

1987 NISSAN MAXIMA
13,000,000 MILES • 6 CYL • FWD • AUTOMATIC
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DTFRANK
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  • 3 POSTS
1987 Maxima New:Radiator, Coolant, Radiator Cap, OEM water temp thermostat, water pump, timing belt, timing dead on, hoses, both the air conditioning and and engine fans work properly, no detectable exhaust gas or oil in the radiator, compression test all cylinders good yet still runs hot at highway speeds if the outside temp is 100F or higher. When this situation occurs the air out of the air-condition smells like rubbing alcohol.
Mar 25, 2011 at 11:23 AM
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WRENCHTECH
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What method did you use to determine that there were no detectable exhaust gas in the cooling system
Mar 25, 2011 at 11:30 AM
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DTFRANK
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  • 3 POSTS
I don't know the method used. I could find out if necessary.
Mar 25, 2011 at 11:40 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
It's a difficult thing to determine positively.
Make sure you have pressure tested the cooling system for leaks also.
Mar 25, 2011 at 11:42 AM
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DTFRANK
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What about the catalytic converter, could this cause this problem it it is degraded and partially plugged?
Mar 25, 2011 at 11:46 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
No, not likely. It would create a whole new set of issues that would overshadow any overheating.
Mar 25, 2011 at 11:48 AM
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