Truck temp gauge help needed

Discussion in 'General Discussion' started by JUNKKING, Jul 8, 2012.

  1. JUNKKING

    JUNKKING Active Member

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    Last Friday it was 96 degrees here in PA I was sitting in traffic with the air on and I noticed my temperature gauge climb to about 230 degrees. I put the truck in neutral and gave it a little gas and it seemed like the fan kicked on and the temp dropped back to about 195 where it always is.

    Yesterday it was 97 again the same thing happened. I checked the coolant and it was good and the level was right where it should be hot and cold according to the lines on the reservoir bottle.

    Do you think this happened because of just hot it was outside or does it need some type of servicing?

    I was thinking maybe it needs flushed, Any ideas?
    Last edited: Jul 8, 2012
  2. Awtoman

    Awtoman Active Member

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    What kind of truck?

    Tom
  3. aa1911

    aa1911 Active Member

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    fan clutch not working properly sounds like; something is for certain not doing it's job, temp gauge should not climb like that even in higher heat if everything is functioning properly. Since it came back down, I'm guessing radiator and lines are fine.

    if coolant is fine, start ruling out thermostat and waterpump also if the fan clutch isn't the problem. A flush would do ya good either way if it's been a couple years or so.
  4. jack404

    jack404 Former Guest

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    the thermo's can get stuck and depending how they operate can raise temps high until freed
  5. wv hillbilly

    wv hillbilly Well-Known Member

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    Quote: Last Friday it was 96 degrees here in PA I was sitting in traffic with the air
    when your sitting in traffic you are not getting the same air flow as if you were going down the hiway. when you are stoped in traffic you dont realize, but when you pull close to the vehicle in front of you you are reducing the fresh air even more. you are sucking hot exhaust from the car in front of you.
    if it has a fan clutch, eliminate it
  6. 68c15

    68c15 Well-Known Member

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    I personally would just avoid long stops in high heat. the clutch could be going bad but I wouldn't worry much.
    FWIW some modern cars don't turn the electric fan on until about 235*
    I should also add that the AC being on is throwing out 200* air to the radiator and the fan clutch would already be engaged if the AC is working good (30-40 degree drop from outside temps)
    Last edited: Jul 8, 2012
  7. 76Highboy

    76Highboy Well-Known Member Supporting Member

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    When I first got my 76 Highboy, it did exactly what your is doing. My truck had ben sitting for about 10 years.

    1st, I flushed the radiator and put in a new thermostat. It still did it but not as severe. 2nd, I installed a new clutch fan and I went with a heavy duty one. Problem solved.

    Let us know what you come up with.
  8. geds

    geds New Member

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    fixed
  9. hstout1143

    hstout1143 Well-Known Member

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    HAHAHAHAHA!
  10. 76Highboy

    76Highboy Well-Known Member Supporting Member

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    GEDS!!! I didn't get that the first time. Back to my master plan.
  11. 76Highboy

    76Highboy Well-Known Member Supporting Member

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    You think that's funny hu? Mr. Smartie Pants.:D
  12. gvw3

    gvw3 Well-Known Member Supporting Member

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    This problem is almost always the thermostat. This is the 1st thing I would do.
  13. hstout1143

    hstout1143 Well-Known Member

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    When I took my driving test way back in '78 it was in my brothers '76 highboy with a 4 speed and 8" lift, he's always been a ford man and I've always been a Chevy ma. We rib each other about it all of the time and Geds reply sounds like something I would say to my brother, so, yes, I think that's hilarious. Here's a pic of my daily driver and last truck I'll ever need.
    Last edited: Apr 22, 2013
  14. 76Highboy

    76Highboy Well-Known Member Supporting Member

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    Ok, ok, fine. I wont start bashing your truck because I see it has enough problems. It is a nice ride. I was a GM mechanic for about 18 months and they are not bad. The thing is my truck is to me as an Glen67's Mustang is to him. One last thing. Your brother has great taste in trucks.
  15. hstout1143

    hstout1143 Well-Known Member

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    He also has family and friends that he calls when it breaks down, which is often. HAHAHAHA
    Last edited: Jul 8, 2012
  16. Appliancedude

    Appliancedude Well-Known Member

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    Dont trust anything a FORD guy has to say about fixing a rig. There is a reason he's always working on it
  17. 76Highboy

    76Highboy Well-Known Member Supporting Member

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    The funny thing about Ford vs Chevy vs Dodge is this.

    When I was turning wrenchs, for about 7 years, I always got a kick out of the truck guys. They all complined about the other brand but yet they were always bringing their own rigd in all the time.

    When I worked for GM, the Ford guys were accross the street fom us. We all had kind of the same thought. Both makes had their problems and really no one was any better then the other accross the board.

    I owned a 76 Chevy 3/4 ton Chevy 4x4, same equivalent to my 76 3'4 ton Ford 4X4. I did a horse trade deal to get the Chevy with one intension. To see which truck was tougher, Ford of Chevy. I took the Chevy out and off roaded in the same places that I had been wheeling my Ford in for many years. Here's what happened. It was my full inensions to send both the Ford and Chevy to hell beating them to death.

    The Chevy, broken radiator, broken rear shock mount, and I blew a hub. before I sold it the motor gave up.

    My Ford, nothing. It never let me down.

    They were both 76's, both 3/4 tons, but the Ford was just stronger.

    Also, the frame of the Chevy was much easier to drill then the Ford, and the frame on the Chevy had way more twist which is why the front frame was broke on my Chevy which is why the guy got rid of it.

    As for the new one's I don't eally know. I just like my old war horse.:D
  18. hstout1143

    hstout1143 Well-Known Member

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    How lucky are you? It sounds like you got the only 2 exceptions to the rule that Chevys are always better than Fords.
  19. sting75ray

    sting75ray Well-Known Member

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    What year is your truck? I have a 2007 Chevy Duramax with 150,000 miles on it and a 2006 GMC Duramax that just hit 220,000 this morning. Both damn tough trucks with no proplems other than a water pump on the 06 at 200,000.:D
  20. howlnmad

    howlnmad Well-Known Member

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    I would check the fan clutch, it's the easiest to do. When the motor is cold and turned off, you should be able to spin the fan by hand. Heat the motor up and turn it off and see if you can spin it freely. If so, it's the fan clutch.
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