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  #1  
Old 12-17-2001, 03:17 PM
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Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
3 sensors atop engine

can someone please identify the 3 sensors
sticking out on the side of the valve cover,
and what do they do?

i know coolant/temperature sensor located
at the very back towards the fire wall.

what about the two others?
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  #2  
Old 12-17-2001, 04:07 PM
Boatguy789
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Sensors

Which engine do you have?

If the forward most one has two vacuum lines to it, it is a Thermo Vacuum Valve for the fuel evap cannister. It is normally closed and opens at 50 C.

Jeff
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  #3  
Old 12-17-2001, 10:26 PM
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Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
thanks jeff, it is a 124 300E '89. i think, my thermo
vacuum valve is broke, the plastic base is broke.
what kind of problems is associated with it, if any?
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  #4  
Old 12-17-2001, 11:53 PM
Boatguy789
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Symptoms will be associated with a vacuum leak. There are two vacuum nipples sticking out, one straight and one angled. The angled one connects to a tube running from the throttle body, the straight one runs to a vacuum connection on the left fenderwell, the purge valve. Depending on which one is broke, you may have a vacuum leak constantly, or, only when the switch opens at 50 degrees C.

If you have the CD rom set, you can find the diagram under fuel system, 47-200, Funtion of fuel evaporation system.

Fastlane didnt have the part# 001-140-62-60. My local dealership did for $12.65.

My car is a 89 300SE so the parts should be the same.

Good luck
Jeff
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  #5  
Old 12-18-2001, 12:15 AM
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Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
thanks for the info, jeff. happy holidays!!
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