Question about 1989 Chevrolet C1500

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On my 1989 k1500 350 TBI, the engine temp gauge isnt registering anything, but it was the other day, where is the engine temp sensor located?

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  • Brook Webb Apr 17, 2009

    no sir, its not a thermostat problem i replaced that last year with a cooler running one, it was working fine just the other day and i saw the gauge just drop off to nothing. when you turn the truck off the gauge goes up half way but as soon as you turn the key to the on position its drops right off again. Just now i found a broken off wire that appears to be a ground wire grounded to one of the thermostat housing studs.



    where is the engine temp sender anyways?

  • yadayada
    yadayada May 11, 2010

    does it (the gauge) register if u let the engine idle and block the radiator air flow with a piece of cardboard? if so you need a thermostat not a sender, chevy senders fail almost never, replaced one in 30 years.

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  • Master
  • 678 Answers

The sender is on the driver side cylinder head between cylinders 1 and 3. The single wire connector to the sender gets very brittle over time from being subjected to heat from the exhaust manifold. It's somewhat common for them to break. Give that a look as well as the wire to it.

Posted on Apr 17, 2009

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