I dont get it.

Installed new FLT auto tranny. Installed Kooks, with MSD wires, and
new spark plugs. (150k miles 95 Z, original O2 sensors).

She starts up fine - let her idle for 5 minutes, not a heartbeat missing.

The "Check Gauges" light on the dash is on and the oil pressure,
engine temp, and fuel gauges are all wacked out:
* Oil pressure - no reading
* Engine temp - no reading or movement
* Fuel gauge - shows "more than full"

I've checked all the wires and they are all connected and there are no
breaks. I've checked the ohms for the engine temp sensor and it is
within tolerance. I've not disconnected ANY of these wires or sensors
during the header and tranny swap-out.

All else works fine - Meziere electric water pump, alternator gauge reads
normal, headlights, blinkers, dash lights, horn, etc all work. Engine purrs
and revs nicely.

Any ideas?

 

Check ground ables right above the battery & also power cables.

Also check fuses.

 

I hadn't considered the ground straps - I think i've seen 2 or 3 lingering
around the engine compartment. Come to think of it, there is a wire
that is connected to one of the passenger-side motor mount bolts - one
of the bolts to the engine block, that I had to remove, but I did reconnect it.

It might be a good idea to remove all ground straps and clean their connections later today.