car won't go to closed loop ?

[mike 1985]

ok auto x-ray says the car isn't going into closed look

here are some #'s
prom id 7805
idle air 38 steps
coolant 173.3
rpm 750
tps .58V
O2 827 MVolts
MAT 203 ( never changes)
knock sensor 133
O2 cross counts 0
MAF 8gr/sec
inj plse 1.9ms
loop status open

this is in scan mode as i cant get MON to work.

any ideas why the car won't go into closed loop?

 

[jmccloud]

Closed Loop

Don't know when closed loop starts but my coolant runs a lot hotter than that, 200 and up per the digital dash readout. Where was the temp measured? If the thermostat is stuck open, it may never go to closed loop. Even a carburated car may drop >25% in mileage and goof up the CAT's (or blacken the pipes on older cars) if the thermostat sticks wide open.
BTW, how can you tell it's not going to closed loop?
Thanks