EGT guage/probe issue. Need Help.
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This is a discussion on EGT guage/probe issue. Need Help. within the Interior Mods forums, part of the Tech & Modifying & General Repairs category; I just installed my egt gauge and probe a few days ago and it's not working. I double checked all ...

  1. #1
    Registered User 03WREX's Avatar
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    EGT guage/probe issue. Need Help.

    I just installed my egt gauge and probe a few days ago and it's not working. I double checked all the wiring and connections and everything seems to be correct. I have a VDO gauge and a TRE egt probe.

    The gauge did work for a split second but went back to zero after going up only one notch on the gauge. Is there any way to test if the probe or gauge are working properly? A list of things to check would be great. Thanks!

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    svc
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    Make sure the grounding wire is solid...are you getting lights on the gauge but no reading, or nothing at all?
    sammAy!

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    SMC
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    EGT

    Pull the probe & heat it up with a lighter or torch- if it don't read on the guage you probably have a broken wire somewhere......thermocouples either work or they don't.

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    Registered User 03WREX's Avatar
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    The light on the gauge works fine so I know that part is fine. I grounded the wire from the gauge to the same wire as the light in the gauge. Here's a link to the wiring diagram for the vdo gauge courtesy of eguages.com Diagram

    How likely is it that the probe itself is bad? I think I better triple-ck the wiring again and make sure everything is hooked up properly and securely.

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    Registered User 03WREX's Avatar
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    I noticed something while looking at the signal wire. I hope I'm not this retarded but the wire is composed of three wires. Theres a yellow and a red. But the red is composed of two more individual wires (copperish-looking and a steelish-looking). Is this normal?

    I was under the impression that there would be only two wires... this third wire is really throwing me off now. Can someone please help clarify this signal wire issue. I think this is the reason why the gauge is not working... hopefully...

  7. #6
    Registered User 03WREX's Avatar
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    Okay... got it. Figured out the whole wire situation... I used 2 of the three wires and my power wire wasn't giving enough juice so I found a better connection. Works fine now.

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