Thread: Cooling fans only come on with ac

Results 1 to 10 of 10
  1. #1 Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Chesapeake
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Engine temp ran up to 2 notches from red in stop and go traffic one day. As an experiment I parked car and let idle, same thing, checked fans, neither one on. Turned AC on and both come on cooling car right down to about 180. Figuring it's the engine temp sensor, any thoughts? Could it be one of the 3 fan relays? Thanks for any advice!
    Kevin
    Reply With Quote  
     

  2. #2 Re: Cooling fans only come on with ac 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,997
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    sounds like the temp sensor, they fail all the time.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  3. #3 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Chesapeake
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Gonna replace and will give update, thx
    Kevin
    Reply With Quote  
     

  4. #4 Re: Cooling fans only come on with ac 
    GrandPrix Junkie
    Join Date
    Oct 2009
    Location
    St. Louis
    Posts
    4,732
    Thanks (Received)
    18
    Likes (Received)
    76
    Dislikes (Received)
    0
    FYI- get an OEM GM sensor for it. The ones at the parts stores seems to have a high failure rate, and some are even bad out of the box. Might be $10 more at the dealer but worth it in the end. I went through 2 "new" sensors before I finally went to a dealer and got a GM one. After that the temp readings were where they should be.
    Reply With Quote  
     

  5. #5 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Chesapeake
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I agree, price range 7 to 15 bucks, went with AC Delco($15) from RockAuto.com
    ACDELCO 213815 {#10096181} Sensor GM Original Equipment Info
    3 blade terminal; W/IND SW; MATING CONNECTOR WITH LEADS USE PT1825
    Gonna keep AC on til it arrives and we'll see what happens, thanks for input!
    Kevin
    Reply With Quote  
     

  6. #6 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Texas
    Posts
    21
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I bought mine today at a dealership for $40.
    Reply With Quote  
     

  7. #7 Re: Cooling fans only come on with ac 
    GT Level Member JamesIvey24's Avatar
    Join Date
    May 2011
    Location
    Illinois
    Posts
    499
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by Diegozr1 View Post
    I bought mine today at a stealership for $40.
    fixed that for ya.
    Reply With Quote  
     

  8. #8 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Texas
    Posts
    21
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    [QUOTE=JamesIvey24;1449671]fixed that for ya.[/QUOTE

    I'm putting it tomorrow. I'll update
    Reply With Quote  
     

  9. #9 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Texas
    Posts
    21
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by JamesIvey24 View Post
    fixed that for ya.
    Yup new sensor fixed the problem!!
    Reply With Quote  
     

  10. #10 Re: Cooling fans only come on with ac 
    SE Level Member
    Join Date
    Oct 2016
    Location
    Chesapeake
    Posts
    4
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Same here, easy fix, 5 min.
    Kevin
    Reply With Quote  
     

Similar Threads

  1. cooling fans
    By GXPrunner06 in forum 5.3L V8 (LS4)
    Replies: 10
    Last Post: 09-22-2013, 04:16 PM
  2. cooling fans
    By polarisdescent in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 17
    Last Post: 09-07-2012, 04:28 PM
  3. cooling fans on 90 G.P.
    By TIMS TURBO in forum General Tech Discussion
    Replies: 18
    Last Post: 05-01-2012, 06:34 AM
  4. cooling fans always run
    By jaxso6 in forum 3.1L V6 (LHO/LG8)
    Replies: 4
    Last Post: 11-25-2011, 08:33 PM
  5. Cooling fans always on?
    By oldschoolpontiacs in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 06-14-2009, 01:29 AM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •