Jeep: Intermittant problem

YouGoFirst proclaimed:
 

If a thermostat is sticking, it is either installed wrong or broken
and is not going to get much better. Try a different mechanic, as
your current one is either not being kept in the loop properly or
they are a bit challenged in the logic department. If you keep
overheating that engine, you will be looking at a repair bill of
more than the vehicle is worth.

DollarBill proclaimed:
 

A very good diagnostic though. If that doesn't cool it down much,
the thermostat is sticking or defective or the water pump is bad.

DollarBill proclaimed:
 
Airlock is caused by poor repair. Some mechanics carefully purge all
air, some don't.

>>>>I don't think that is the problem, the thermostat and gasket were 

Thanks, fortunately I haven't been letting get the temperature too much
higher than normal. All of my drives, including to the dealership, have
been 10 minutes or less. Giving the engine time to heat up, but not
overheat.

>> > My guess if this did not happen at all before the thermostat was 


Just to make sure, if the thermostat was sticking, I would assume that it is
possible that it could stick in an open state where the engine was not able
to warm up at its normal rate. Is that somehting that you think is
possible?

Also, what about the possiblility of the fan clutch being or going bad?
Could that be causing an intermittant problem with it heating up, or be
stuck so that the engine doesn't warm up as fast as usual?

"YouGoFirst" <com> wrote in message
news:ZyxAe.410662$ops.worldnet.att.net... 
is 
able 

Yep, it could stick, let go, stick, assume any odd pattern it wants to if it
is defective.
 

Easily checked by looking at it when you think it should be on or off.