temp. gauge not working.
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From: Virginia
Look out on the engine for a one wire sensor screwed into a water passage. It will have a red/white stripe wire going to it.
Turn the key to run and get someone to watch the gauge. Take the wire off the sensor and touch it to a good ground on the engine block. The guage should read full scale cold or hot. Then take the sensor wire off the ground, and let it hang in the air and touch nothing. The gauge should swing the opposite direction full scale. If all this works, then the gauge and wiring is ok, and the sensor is bad.
Turn the key to run and get someone to watch the gauge. Take the wire off the sensor and touch it to a good ground on the engine block. The guage should read full scale cold or hot. Then take the sensor wire off the ground, and let it hang in the air and touch nothing. The gauge should swing the opposite direction full scale. If all this works, then the gauge and wiring is ok, and the sensor is bad.
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Elder User
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From: North-Eastern, Ohio
Would a water passage be on the left/right, top/bottom of the engine??? Its a 460. Where would it be? And Im gessing that if the gauge doesn't change at all that the wiring/gauge is bad, right? Thanks.
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From: Virginia
Check this link out. They say it may be on the top front of the engine.
http://www.autozone.com/servlet/UiBr...3d800a1365.jsp
http://www.autozone.com/servlet/UiBr...3d800a1365.jsp
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Elder User
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From: North-Eastern, Ohio
Thanks Holme, thats where the sensor is. And thank you Franklin for telling me how to test the sensor. The sensor is bad and I'll get one tomorow. Thanks for the help.
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4th Gear
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Faulty sensor but which sensor..? Lol
For the sake of clarity on my end...this is my first reply and I don't know how to specifically reply to his comment but the guy who outlined how to identify if the sensor was faulty but touching the wire to a good ground on the block. I've done this and need to know which sensor you mean so I can get that part is it the one the wire was plugged onto or is it on the transmission or somewhere else entirely? The nomenclature would help me a lot. Thanks all!
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Joined: Jan 2001
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From: Virginia
For the sake of clarity on my end...this is my first reply and I don't know how to specifically reply to his comment but the guy who outlined how to identify if the sensor was faulty but touching the wire to a good ground on the block. I've done this and need to know which sensor you mean so I can get that part is it the one the wire was plugged onto or is it on the transmission or somewhere else entirely? The nomenclature would help me a lot. Thanks all!
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The temp gauge is for the engine. So it will be screwed into the engine somewhere. You didn't say what engine you have? On the V8's it usually near the thermostat housing where the large upper radiator hose goes into the top front of the engine. It will have a single wire with a elbow fitting on the wire. It will not have two wires to it.
Have a good day!
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