[V8] Short to (+) Intake Air Temp Sensor

[Andy Schor]

Greetings Gents,

If you remember the "no, Officer" thread, I have been having an intermittent 
condition of surging (revving) at idle along with (but not at the same time) 
a situation where the CEL is lit and the car runs rough (with an abrupt 
on/off throttle).  The code reader says, "00523 Short to Positive, Intake 
Air Temperature Sensor".  This has been replaced as well as ISV, O2 sensor, 
knock sensor and associated connectors.  The condition will become evident 
immediately upon starting, usually when warm (but not always).  I have 
noticed that when it is in the CEL mode (limp home?) the idle doesn't surge. 
Most of the time the car drives fine, the condition comes and goes although 
it seems more likely on a warm restart.  Of course yesterday after a few 
good stop and starts, I got the CEL mode for the ride home.  I parked in 
front of the house, turned it off and back on (which I had tried earlier) 
and it fired up with no CEL.

I have tried (with limited success) checking the connectors in the front for 
the offending sensor(s), but they get kind of hot and I didn't want to burn 
my fingers (again).

All thought and suggestions appreciated,

Andy Schor
'91 V8QM
'91 Avant
(Either or both soon to be for sale) 



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