EGT probe???

[thenubsterman]

Hey so as most everyone knows just got my heads back on and running, truck runs great 4x4 doesn't come on whoops gotta see what i didn't plug in lol. BUT more importantly my egt gauge is acting funny, when your cruising down the road it reads give it gas it drops down past 0 like its off then let off it will come back to reading and sometimes it doesn't work at all. Any ideas?

[Evil Eye]

Sounds like your probe is going out or you have a power problem on the gauge itself. I would suspect the power connection to the gauge. Check the voltage at the gauge and confirm you don't lose voltage when you jiggle the wires.

[thenubsterman]

well, i dont think there is a power/ground problem to the guage i hope not because i didn't disturb anything in cab when i lifted it. but i did remove the probe from the exhaust manifold. will a probe do this?

[Evil Eye]

Yes, the probes do go bad. Who makes the gauge?

[thenubsterman]

autometer, i realise the probes go back I was more curious are these the symptoms they have when they go bad? I know my ground is good because gauge lights share same ground i guess i should figure if power is there

[Evil Eye]

Mine does something similar when my lights are on so I am assuming that I have a power problem. I just haven't chased it down.

[thenubsterman]

no mine does it with lights on or off sorry about that