Car overheating even after replacing temperature sensor and radiator fans won't turn on even after replacing them

Asked by Oct 07, 2016 at 11:09 PM about the 2008 Nissan Altima 2.5 SL

Question type: Maintenance & Repair

Even after replacing the temperature sensor and
radiator fans and putting a new fan relay, my car is
overheating.  But when running the OBD II test the
fans turn on. Can you tell me whats wrong?

4 Answers

75

Has the engine been overhauled? If so check and make sure none of the ports where the water flows between the cylinders are not obscured, check for a blown head gasket, and then I would check the water pump. Let me know if I was any help.also check your thermostat

75

As far as the fans go you could have a bad clutch in your fan assembly.

75

Radiator cap make sure the seal on it is good, and run a pressure check, on it

Engine has not been overhauled, gasket is fine, I replaced both fan relays the fan still wont turn on. But when I do the OBD II test fan turns on and when I unplugged the harness from the cooling sensor. The fans turn on and the cooling sensor is new...however when I test drove the car, it would bogg out and can only go a certain rpm. Can you tell me whats wrong? I put in new fan relays, new fan assembly, and new sensor but the fan only turns on when I do the OBD II test and when I unpkigg the harness from the sensor.

Your Answer:

Altima

Looking for a Used Altima in your area?

CarGurus has 67,065 nationwide Altima listings starting at $1,499.

ZIP:

Nissan Altima Experts

  • #1
    Tom Demyan
    Reputation
    2,510
  • #2
    F_O_R
    Reputation
    960
  • #3
    tennisshoes
    Reputation
    800
View All

Related Models For Sale

Used Nissan Maxima
211 Great Deals out of 16,568 listings starting at $1,650
Used Honda Accord
540 Great Deals out of 103,313 listings starting at $950
Used Toyota Camry
739 Great Deals out of 72,888 listings starting at $1,000
Used Honda Civic
352 Great Deals out of 49,702 listings starting at $1,499
Used Nissan Sentra
529 Great Deals out of 47,448 listings starting at $1,400
Used Toyota Corolla
592 Great Deals out of 66,412 listings starting at $1,000
Used Hyundai Sonata
361 Great Deals out of 47,681 listings starting at $1,900
Used Chevrolet Malibu
462 Great Deals out of 51,431 listings starting at $1,975
Used Kia Optima
382 Great Deals out of 30,343 listings starting at $1,995
Used Dodge Charger
269 Great Deals out of 32,045 listings starting at $1,850
Used Nissan Rogue
515 Great Deals out of 77,161 listings starting at $2,400
Used Ford Fusion
629 Great Deals out of 62,556 listings starting at $800
Used Nissan Altima Coupe
24 Great Deals out of 1,082 listings starting at $2,990
Used Chevrolet Impala
369 Great Deals out of 25,634 listings starting at $950
Used Hyundai Elantra
453 Great Deals out of 48,455 listings starting at $1,700

Used Cars For Sale

2018 Nissan Altima 2.5 SL For Sale
1,851 listings starting at $21,990
2017 Nissan Altima 2.5 SL For Sale
19 Great Deals out of 1,124 listings starting at $11,950
2016 Nissan Altima 2.5 SL For Sale
14 Great Deals out of 442 listings starting at $10,350
2015 Nissan Altima 2.5 SL For Sale
29 Great Deals out of 1,548 listings starting at $7,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.