# Keeping Time **URL:** \ **Category:** General Discussion\ **Created:** [December 6, 2008, 2:21pm UTC](https://community.cartalk.com/t/keeping-time/23025 "2008-12-06T14:21:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![jakespap](https://avatars.discourse-cdn.com/v4/letter/j/47e85d/32.png) [@jakespap](https://community.cartalk.com/u/jakespap)\ **Post date:** [December 6, 2008, 2:21pm UTC](https://community.cartalk.com/t/keeping-time/23025/1 "2008-12-06T14:21:33Z")
I no longer have this vehicle, but this question has been a mystery to anyone I asked, and I don’t have an answer. I had a 1977 Chevy 1/2 ton pickup with automatic transmission and 4wd. It was equipped with an in-dash LED clock that never kept good time. One day without warning, the front u-joint on the front driveshaft disintegrated and tore through the yoke. It would take a few days for the parts store to get a new shaft, so I drove the truck without it. During that time, the clock kept perfect time. After I installed the new driveshaft the clock went haywire again. Why? ---
**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\ **Post date:** [December 6, 2008, 5:23pm UTC](https://community.cartalk.com/t/keeping-time/23025/2 "2008-12-06T17:23:26Z")
ooooWEEEEEoooooo ! Not a clue but, I wonder if the clock was sensative to some magnetic field interference from the position of the drive shaft in proximity to the clock ?? ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [December 6, 2008, 7:20pm UTC](https://community.cartalk.com/t/keeping-time/23025/3 "2008-12-06T19:20:10Z")
Perhaps the driveshaft is causing a vibration that’s affecting a flakey clock connection.