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Engine Temp Gauge

This is a discussion on Engine Temp Gauge within the Technical / Maintenance forums, part of the General Discussion category; I have a 94 Silverado 4x4 with a 5.7 litre V8 engine. The temp gauge has began to fluctuate consitantly ...

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    Engine Temp Gauge


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    I have a 94 Silverado 4x4 with a 5.7 litre V8 engine. The temp gauge has began to fluctuate consitantly and when it hits the "peg" or top of the gauge the check engine light comes on. Is this possibly a faulty sensor? If so where is it located on the engine? Or is it in the gauge itself? I've heard that if it is the gauge, then I have to replace the entire panel not just the gauge, which is very expensive!? Thanks for any and all help.

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    Re: Engine Temp Gauge

    U can try temp sensor...its on the intake next to thermostat housing...on left I believe...mine was cracked...

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    Supporting Member 1997chevydriver's Avatar
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    Re: Engine Temp Gauge

    Quote Originally Posted by 2000Chevy4x4 View Post
    U can try temp sensor...its on the intake next to thermostat housing...on left I believe...mine was cracked...
    Not quite right. The sensor by the T-stat housing is for the computer only.

    The sensor for the guage on the dash is in the drivers side cyl. head. I believe its a one wire connector.

    Also when you say "fluctuate" do you mean it does it slowly or just randomly jumps around quick???
    <------Thanks to Mean Green
    1994 K1500 ECSB Z71 5.7L 350
    1997 K1500 ECSB Z71 5.7L 350 Vortec

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    OBS'r jsmitty74's Avatar
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    Re: Engine Temp Gauge

    Yeap, between number 1 & 3 cylinder

    wah!

    If it ain't a Chevy, or a Peterbilt, it doesn't count!

    1996 1 ton crew, single wheel, 350, 4L80E
    1989 3/4 ton. Parked for good, ready for the salvage yard
    2003 Chevy Venture (wife's)

  5. #5
    Supporting Member 1997chevydriver's Avatar
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    Re: Engine Temp Gauge

    yeah thats the one^^^^^^^
    <------Thanks to Mean Green
    1994 K1500 ECSB Z71 5.7L 350
    1997 K1500 ECSB Z71 5.7L 350 Vortec

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    Re: Engine Temp Gauge

    Quote Originally Posted by 1994chevydriver View Post
    Not quite right. The sensor by the T-stat housing is for the computer only.

    The sensor for the guage on the dash is in the drivers side cyl. head. I believe its a one wire connector.

    Also when you say "fluctuate" do you mean it does it slowly or just randomly jumps around quick???
    Thanks for the info! I mean it bounces from the bottom to top and back, (cold to hot to cold) very quickly. Sometimes it will max out and quiver there and other times it will just quiver at the running temp. When it is hitting the top I notice the engine runs a little rough or misses a little. I didn't mention anything bout it running rough before.
    Again thanks for your help. I hope this is what the problem is.

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    Re: Engine Temp Gauge

    Hey man, thanks for the pic it is a huge help. Hopefully that is the problem!

  8. #8
    OBS'r jsmitty74's Avatar
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    Re: Engine Temp Gauge

    Disconnect the sensor,pictured above, see if the gauge still malfunctions. Yes, you can run it without it.
    wah!

    If it ain't a Chevy, or a Peterbilt, it doesn't count!

    1996 1 ton crew, single wheel, 350, 4L80E
    1989 3/4 ton. Parked for good, ready for the salvage yard
    2003 Chevy Venture (wife's)

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    Re: Engine Temp Gauge

    Quote Originally Posted by jsmitty74 View Post
    Disconnect the sensor,pictured above, see if the gauge still malfunctions. Yes, you can run it without it.
    Will do. Thanks a ton!!!

 

 

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