whats it called??

[John Seitz <jws@megahits.com>]

Hello-

If anyone (this means you:-) has the time could you please answer my
question?

Q- I have a 4000Q 5c/ on the upper cooling hose coming off the engine
block, there two plugs/sensors.  The one on the top is for the coolant
temp gauge (I hope??) the one on the bottom which uses more of heavy
duty plug is for .......

Please tell me what this does???  My car will have a great deal of
hesitation when cool (not cold!) warm but not when hot??  First thing in
the AM the car has great power about 60secs the power drops and the car
blows chucks, once the engine gets about 2/3 heated the car start to run
pretty good?

I believe this sensor tells  the FI what to do??

A.________

Thanks As Always
John Seitz