Pyro bouncing

[sagebel]

This morning after I parked the truck, the needle on my pyro started to bounce. When it stopped, Just for the hell of it, I turned the lights back on and it bounced again. The alt. was replaced about 3 months ago and RPM does seem to matter. Any ideas?

Scott

 

[roosterdiesel]

I'd check the thermocouple wire for kinks. Also might be one of your power or ground wires loose. Where did you tie in for those?

Other than that, .

 

[sagebel]

I don't remember were I tied in but today on the way home I played with the headlight switch and when it was not on the pyro would sometimes go to effectively 0*. With the lights on it works then starts to bounce around, lights off it works for a little while then quits. I'll go out tomorrow and pull it out and see what's going on.

Scott

 

[Ford_Forgotton]

you've got a wiring problem. Mine did that when I pulled some wires under the dash and it made a flaky connection on the back of the gauge. Go thru and double check all your connection points and you'll prolly find a loose wire or a connector making a bad connection.

 

[sagebel]

I got too involved in the yard work today to get to checking the wiring. I have had the guages installed for almost two years now. Thanks for all the ideas.

Scott