Your PCM is having problems.

What im chasing right this second is no cooling fan.

Replaced relay and coolant temp sensor, no fan.

Jumped temp sensor, no fan.

Bypass relay, full fan.

What temperature is the engine at?

Blew lower radiator hose, shut it off immediately and towed home, replaced upper and lower hose, rad cap and pump thin film of gasket maker on both sides of new gasket, made sure nothing got into the pump casing

Guage pegged to max in stop and go, pulled over and sat til it cooled.

When driving guage sits midline, with the relay jumped and fan running guage sits midline even after half an hour.

All air out of the system?

Backfed 50/50 via a tee in the heater core return line, positive theres no air in the system.

Wow, yeah that'd do it.