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    laurenemanuel's Avatar
    laurenemanuel Posts: 1, Reputation: 1
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    #1

    Jun 23, 2014, 01:12 PM
    Temperature gauge 87 GMC Chevy Vandura
    Hello, I have an 87 GMC Chevy Vandura. The temperature gauge hasn't worked since I got it. I had an incident the other day and it started to over heat and had I not been paying attention I probably wouldn't be bothering with this question :-) I wouldn't think the thermostat has anything to do with it. Any suggestions appreciated. Thank you
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Jun 23, 2014, 02:37 PM
    Thermostat could indeed have something to do if it is stuck closed. Checked fluid level?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #3

    Jun 23, 2014, 03:12 PM
    Check the radiator for passages that may be partially blocked by phosphate scale (minerals), due to using tap water. You can check the radiator with an IR thermometer. I wouldn't be surprised if you had to replace the radiator and refill it with a 50/50 mixture of antifreeze and distilled water.
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