Issopro pyrometer issues

[JACQUES HANSEN]

I have 2006 2500 QC, 4x4 with Issopro pillar pod. The EGT would read between 650-800 (no load) on average at highway speeds and about 300-400 at idle.


I noticed lately it now reads at about a 100 or 200 at idle and then at highway speeds it will not go above 3 or 400? Any idea what is wrong? Thermocouple bad? Need new gage? I installed the gouges in 06 when I bought it, worked fine all these years.

 

[BigPapa]

Where do you have the gauge grounded?

 

[EDankievitch]

I had issues with mine years ago. It ended up being a bad connection in the thermocouple. The wires need to be really clean. Stripping off the insulation is not enough. Wire underneath the insulation has a coating on it.

 

[DavidC]

I imagine you have the old version like mine which came with solid wire (2 wire). Their new has an amplifier (make something simple into a science project). I ordered a new cable from ISSPRO and it now comes stranded as solid is not good with vibrations and all is well again. I would imagine at least one of the conductors is damaged somewhere between the gauge and thermo so it is probably best just to replace the wire.

 

[DavidC]

Where do you have the gauge grounded?

Scott, the old style is just a 2 post with a light, no grounding required. I do not know when they changed to the added amplifier style which will be a whole new project.

 

[JACQUES HANSEN]

Thermocouple has two wires that have an all weather male plug goes into a all weather female plug. The wire then goes into cab. So buy a Thermocouple or wire from the female to the gauge.