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== == The one in the head is for water temp. It works the temp. gauge in the dash only.

The one in the intake tells the computer to richen or lean the fuel. It does not have a choke to richen the fuel up when it's cold. It reads water temp. Hey I'm cold I need more fuel, so I can start.

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โˆ™ 2008-12-17 03:45:01
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Q: There are 2 coolant temp devices on your 91 k1500 5.7L The single wire one switch that screws into the head what values does it have is it just a switch to ground what devices use its output signal?
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