Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Radiator

Discussion in 'The Garage' started by 79cheyenne79, May 16, 2006.

  1. 79cheyenne79

    79cheyenne79 Registered Member

    Joined:
    Aug 14, 2005
    Posts:
    29
    Likes Received:
    0
    Location:
    maryland
    When I start my truck the temp goes up to 260. Then after I hit the gas for awhile the temp drops back down to 180 like it suppose too and a few times not that often once in a blue moon it will happened while Im driving. What do ya'll think it is. I just put the temp gauge in last week and I had the truck for about 1 yr. Its a 79 k20 long bed 5.7 4bbl :mad: :doah: :yikes: :confused:
     
  2. mxfireman

    mxfireman 1/2 ton status

    Joined:
    Dec 7, 2002
    Posts:
    2,480
    Likes Received:
    0
    Location:
    LHC, AZ
    thermostat maybee? how old is it....
     
  3. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,980
    Likes Received:
    189
    Location:
    Roy WA
    If the gauge is accurate, I'd bet the thermostat is sticking.

    Parts store cheapies are a coin toss if they will work brand new out of the box, a Delco thermostat is a good choice.
     
  4. MattK

    MattK 1/2 ton status

    Joined:
    Jan 12, 2005
    Posts:
    1,713
    Likes Received:
    0
    Location:
    Dallas, TX
    agreed.
     
  5. Kyle Strong

    Kyle Strong 1/2 ton status

    Joined:
    Sep 26, 2005
    Posts:
    280
    Likes Received:
    0
    Location:
    Eugene, OR
    yeah, I'm fairly sure the t-stat is sticking. They're cheap. replace it.
     
  6. 4xcrazy

    4xcrazy 3/4 ton status

    Joined:
    Oct 31, 2003
    Posts:
    9,472
    Likes Received:
    5
    Location:
    Olympia/Lacey, Washington
    Check your coolant level, i thought i had a bad t-stat awhile back, did the same thing, went to tear it down and replace it, and found it to be very low on coolant.

    Found that i had a very slow, small leak from the rad hose to the intake, fixed the hose, and went ahead and replaced the t-stat,,,,,,no problems since.:D
     
  7. 79cheyenne79

    79cheyenne79 Registered Member

    Joined:
    Aug 14, 2005
    Posts:
    29
    Likes Received:
    0
    Location:
    maryland
    i changed the t stat im letting the silicone dry overnight and hopefully i wont see that problem any more. I got a t-stat that is set at 160 is that cool? i think its suppose to be set at 180
     
  8. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,980
    Likes Received:
    189
    Location:
    Roy WA
    Stock GM is 195*, if it doesn't stay cool with a 195*, any other temp t-stat is a bandaid for another problem.
     

Share This Page