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> Wiring of cylinder head temp. sensor
lmcchesney
post Jul 15 2006, 12:23 PM
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I have a ring cylinder head sensor, the ring type that fits under the spark plug.
I have a VDO cylinder head temp gauge.
Two questions:
Does the ring fit between the spark plug washer and the cylinder head or bewteen the washer and the spark plug, providing the best seal for the spark plug?
What is the wiring of the sensor to gauge?
I have two 16ga. wires running from the engine bay, through the central tunnel up to the dashboard. My understanding is that the temp sensor acts as a resitor which varies with the temp. Thus you provide a positive flow through the gauge, to the sensor which grounds out on the engine block. How wrong am I?
Thanks,
Larry
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Dave_Darling
post Jul 15 2006, 01:18 PM
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The ring-type sender either replaces the plug washer or goes between it and the head. You just slip the sender over the plug.

That sender (unlike the CHT sender for the EFI) is a thermocouple, so it creates a small voltage difference between the two wires when heat is applied to the sender.

Your gauge should have come with wires for the sender. The instructions say not to cut the wires (I'm not sure why).

--DD
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lmcchesney   Wiring of cylinder head temp. sensor   Jul 15 2006, 12:23 PM
Dave_Darling   The ring-type sender either replaces the plug wash...   Jul 15 2006, 01:18 PM
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