Guages worked fine for 1 month then it started to flutter and now it stays pegged out any ideas????

I'd check the ground wire first.

an ohmmeter.. and test it... Mine burnt up once...

Burnt probe test (http://www.dieselplace.com/forum/showthread.php?t=34741)

an ohmmeter.. and test it... Mine burnt up once...

Burnt probe test (http://www.dieselplace.com/forum/showthread.php?t=34741)


ummmm... you're bad luck, I just went down to the post office,, pyro was pegging and jumping around on the short drive.... just tested it..

Mine burnt up twice....


guess I better get the spare out.

I've been through two as well.

I checked the wires and all looked ok. When you shut the key off the needle goes to o then when you turn the key on it jumps straight down and stays there I sodded all the connections and the back light works. I then took the probe out of the manifold and it acted mormal then "key on 100 deg key off 0 deg" Then I put the probe back in and it worked for about 1 min then back to being pegged out. Thanks for any input.

NOT SHURE ;but I just put ispro gages in my truck and I recall instructions say"do not solder probe connections "dosent say why . dont know if that has any thing do do with your problem ,just a thought.

I checked the wires and all looked ok. When you shut the key off the needle goes to o then when you turn the key on it jumps straight down and stays there I sodded all the connections and the back light works. I then took the probe out of the manifold and it acted mormal then "key on 100 deg key off 0 deg" Then I put the probe back in and it worked for about 1 min then back to being pegged out. Thanks for any input.


How many ohms between the red and yellow wire?

I called auto meter today and they said. "Take the probe out of the manifold and put a volt-ohm meter on the red and yellow wires set it for milli-volts and watch the meter while slowly heating the probe the MV should slowly rise then when you take the heat away the MV should slowly drop". I did that and the MV went up a little then to 0 then back to MV then back to 0. They said that it was a bad probe and it is on the way. What a simple way to test things. I only soddered the wires inside the cab.