1985F20 SuperCab "REDRUM"

I know it's been a long time since I last posted.

The cable ended up snapping right at the transfercase so I replaced the lower cable.

It's still bouncing like crazy so I have an upper cable on order.

I didn't drive it much between my last post and now, so I had to do some mold remediation from it sitting.  Now I run an AC dehumidifier in the truck when it sits so that I can hopefully pull out all the excess moisture.

All in all the truck is running well.

I replaced the upper cable as well, speedometer is still bouncing.  I need to crawl under the truck and try to drive the cable with a drill or something.  I'll check the gears when I do as well.  From what I can remember the gear on the cable is pink or a very faded red.  I have no idea what the gear in the transfercase is, I still need to try and look.

I also had the start, run for a bit then die problem resurface.

I ended up jumpering the oil pressure switch and the problem seems to have gone away, but I've only started it twice since doing that.  I haven't been able to find a direct replacement switch so I'm likely going to install a universal one.

I think Bill has said that one from a Chrysler K car is functionally identical. (Omni/Horizon, Reliant, etc..)

Right, Jim.  I ordered this Standard Motor Products PS-64 Oil Pressure Switch from Amazon and it worked fine.

On the speedo, I put a new cable in and still had bouncing.  I lubed the new cable with varying things, to no avail.  I finally lubed it with Mobil 1 synthetic wheel bearing grease, the red stuff, and it took most of the bounce out.  That was probably 10K miles ago and it is still working fine, cold or hot.

try to be certain of the routing and avoid unnecessarily tight bends. also be sure the connector at the gauge itself is clicked on well and as straight as possible. any kink at all will cause speedo bounce. you might also want to grease the brass bearing of the gauge itself. these are not greased and are often very loose feeling when unhooked yet get a drag when connected. if the cable pulls to the side at all causing the cable (a four-foot spring) to "catch and release".