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PostPosted: Sat Jun 02, 2012 12:30 pm 
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Joined: Tue Aug 01, 2006 10:52 pm
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Location: Birmingham, Alabama
directly under the TPS on the throttle body is a small sensor, looks like it probably has one wire. Mine is disconnected, and I'm trying to figure out what it is so I reconnect it using the wiring diagram. I checked the component location diagram, and it's not listed. I'll take a picture later and update.

Thanks guys!


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PostPosted: Sat Jun 02, 2012 4:08 pm 
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Location: Birmingham, Alabama
Ok, took a picture of it. This is on the passenger side. The car has a high idle problem, and I think this should be addressed before tackling anything else.

edit: picture orientation is off, left is actually up, the alternator should be at the bottom of the picture.


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File comment: mystery unplugged sensor in the middle of the picture.
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PostPosted: Sat Jun 02, 2012 6:59 pm 
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Location: Spruce Grove Alberta
it might help to know which engine year etc.

looks like temp sensor.

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PostPosted: Sat Jun 02, 2012 8:07 pm 
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91 1.0 I think it's a temp sensor, too. Wanted some other input.


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PostPosted: Sun Jun 03, 2012 2:19 pm 
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Location: sidney, nebraska
It's a temp sensor. I have seen it on seversl metros but never connected to anything. Dont know why it's there. Asked a chevy dealr mech about it said dont worry about it.

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PostPosted: Sun Jun 03, 2012 2:35 pm 
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If it's not connected to anything, it could be a temperature sensor of the A/C system. It's used to deactivate the compressor if the engine is getting too hot, specially at idle. I'm not familiar with metro's but as far as I know there could be only a few temp. sensors on the car:
1:temp. gauge sensor
2:radiator fan switch
3:coolant temp. sensor, for engines with ECM (no choke)
4:temp. sensor of A/C system (sorry don't know the name of this one)

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PostPosted: Mon May 05, 2014 11:23 pm 
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Location: Winnipeg, MB Canada
I will second the temp sensor for A/C. My 1991 Sprint (Metro) has that sensor and it is not plugged in to anything. I also have no A/C.

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