no speedo/tach

91' XJ 4.0 AW4 231 TC. No speedometer or tach. Odometer does work as well as the rest of the gauges. Any thoughts?

For the speedometer at least, check the connection on the transfer case... I accidentally left mine unhooked and went for a spin and noticed I was going 0 mph.

i knocked the connection on my transfercase out when my drive shaft came unbolted (long story but for short forgot locktite:looser: ) and lost both speedo and odometer but still had the tach the only thing i could think is maybe your gages went bad

UPDATE: decided to take it on the interstate today to see how it handled,'cause it sucks on secondary roads.
I doubt if I have had it over 45mph before this because of the speedo. (just put this on the road the other day). I got up to what I figure was about 55mph. Traffic was passing me but not by a lot. I noticed that speedo needle was over by the 85mph, when I got off the ramp it dropped back just below the 5mph, I had a good stretch of road so I brought the speed back up....and watched the needle go backwards towards 85mph. Any thoughts. Had no affect on the tach.

The tack is electrical off the coil. The speedo uses a gear in the transfercase. The speedo turning backwards!!?? My first thought is a broken cable. This would cause wind up, meaning the cable is turning but builds up resitance like a spring and eventually releases. This causes all kinds of speedo problem.

did you see if your odometer was working correctly because the odometer and the speedo both run off the same cable from the transfercase

Yeah, that's what I was thinking. Start probing connections behind the gauge cluster as well as the big plugs on the driver's side lower firewall?