drharper1
Junior Member
- Joined
- Jul 13, 2024
- Posts
- 6
- Reaction score
- 0
- Location
- Ohio
- First Name
- Dan
- Truck Year
- 1985
- Truck Model
- K20
- Engine Size
- 6.2
I have an 85 K20 with a 6.2l diesel, 700r4 with a NP241c transfer case.
The issue is when I start up and start driving the speedometer works without issue and is accurate, but once I drive for a bit (10 miles or so) the speedometer bounces a couple of times and then dies. It will remain dead for the remainder of the trip, but if I turn the truck off for a period of time, it will start working again until it warms up and then it stops.
I have not seen anything in the forums or on Google with the same issue. Has anyone seen this issue before or can give me direction to look into? TIA
The issue is when I start up and start driving the speedometer works without issue and is accurate, but once I drive for a bit (10 miles or so) the speedometer bounces a couple of times and then dies. It will remain dead for the remainder of the trip, but if I turn the truck off for a period of time, it will start working again until it warms up and then it stops.
I have not seen anything in the forums or on Google with the same issue. Has anyone seen this issue before or can give me direction to look into? TIA
