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Truck likes to heat up

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BillyBob, Jan 28, 2002.

  1. BillyBob

    BillyBob 1/2 ton status

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    I've noticed if my truck sits in traffic for a while.. it tends to heat up.. almost to the 260 mark. One time I was stuck and actually had to rev the motor to make the water pump work a little more (I was also about a quart low on coolant)... Could this mean something? I just don't wanna go wheeling with this thing only to overheat and get stuck. I'd rather look like a fool asking this than break my truck in South jersey

    <a target="_blank" href=http://billybob87k5.50megs.com>Homepage of Porky & Stinky</a>
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  2. muddin4fun

    muddin4fun 3/4 ton status

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    I would go ahead and change the thermostat (since they're so cheap anyway) and when you drain the coolant, look inside the radiator and see if it's really gunky in there. You might need to flush it. Check to see if the clutch is working on your fan. I forget how to check it, but I'm sure someone will come along and tell you.

    <font color=green>Can't sleep...the clown will get me</font color=green>

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  3. MXmastermike

    MXmastermike 1/2 ton status

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    I had a similar situation not too long ago. Check to see if some guy who owned the truck before you had tried to use bondo to fix the radiatior rather than just buying a new one. :(

    -mxmastermike, the 4000th registered user
     
  4. RaisedK5

    RaisedK5 1/2 ton status

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    As Muddin Said, new thermostat, and check the fan clutch it shouldn't spin freely, there should be some drag on it, check around the hub on teh fan clutch, any goo? if so its a gonner. If it does it while sitting and not while at speed its airflow related, thats why i would suspect the fan clutch, Also check the timing, engines tend to heat up when to far retarded (right?). Also check for obstructions to the radiator, Is the front loaded up with Mud or Bugs? Just a few ideas.

    Leland aka RaisedK5

    "The Voices told me to do it!"
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