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Altima 2.5 2002 overheating at hway Forums > > Altima 2.5 2002 overheating at hway Altima 2.5 2002 overheating at hway
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  #1  
Old 09-16-2011, 05:12 PM
Canguro Canguro is offline
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2002 altima
 
Join Date: Mar 2008
Posts: 4
Default Altima 2.5 2002 overheating at hway

Hello, my altima is overheating at highway speeds, and/or at climb hill, with the a/c on or not.
If I put the heat on, temperature goes down to normal. Not an option with 104° F out there in my town.

Radiator is good. (2 years)

Change the 2 T-stats.

Change coolant twice.

No coolant leak.

Fans properly work at low and high speeds, both.

Belt is new.

Have really bad gas consume.

Throw P1444 and P0605 codes.

Hope you experts can gimme a clue.

Thanks in advance.
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  #2  
Old 09-16-2011, 08:05 PM
bennyb53's Avatar
bennyb53 bennyb53 is offline
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2019 Sentra
2002 Altima
 
Join Date: Jan 2011
Location: Hawaii
Posts: 2,105
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You have 3 unrelated issues:
1. Overheating - Possible water pump failed since you already replaced the T-stat and radiator.
2. P1444 is EVAP canister vent control valve. May be stuck open due to dirt. Can be cleaned.
3. Probably the worst of all P0605. Most likely you need a new ECM.
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