Car running hot
20

Asked by Michael Jun 03, 2018 at 04:07 PM about the 2005 Nissan Altima 2.5

Question type: Maintenance & Repair

My 05 Altima was running hot very hot when ac is on and
going over 65.  It has a new radiator. My fans work. It’s full
of coolant.  So I changed the hoses Incase the were
collapsing at high speeds.  While I was changing hoses I
replaced both thermostats.  Now it’s worse. It will get hot
at 45 mph.  Let me repeat.  It runs hot at highway speeds
when ac is on only. If I slow down and keep ac on it
resides. Or if I maintain my speed and turn ac off it goes
back to normal operating temperature

1 Answer
65,510

firebird338 answered 6 years ago

Me and my wife own nissans and the A.C condenser coil sets in front of the radiator so what is happening because it happened to one our vehicles the condenser coil is clogged with dirt and bugs causing little to no air flow across the coils no air through condenser no air flow to radiator use a garden hose and nozzle to clean out radiator then you will get air flow to the radiator.

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