1997 Peterbilt 379 clicking sound while driving

Hahaha. That's funny

 

That’s why I asked if the frequency of the clicking sound increased with increasing ground speed. The trip odometer clicking will click faster, the faster you are driving. I experienced the same issue years ago, with Navistar trucks that had mechanical odometers.

 

That is funny. Something I’ve never seen for sure

 

I replaced the original Stewart Warner hour counter in my ‘67 that runs as long as the PT fuel shutoff solenoid is on with the ignition switch. Regardless of whether the engine is running or not. It clicks with every rolling number too. Cant really hear it much unless the engine is off. But even then It didn't dawn on me this time.

 

My hearing is so bad from being around trucks my whole life, I probably would never have heard it in the first place.

 

So that’s what it was…… my former 1994 379 had the same issue. Sounded like a relay. Every thing worked so I never bothered with it.