 Oil temp gauge not working |
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| R Dub |
 Sep 14 2018, 08:31 PM
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#1
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Member  Group: Members Posts: 123 Joined: 29-August 17 From: Burbs of Chicago Member No.: 21,387 Region Association: None  |
Last weekend I drove the car for the first time in about 20 years. I noticed the oil temp gauge doesn't work. Any idea ideas how I can check to see if it's the sensor or the gauge?
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| 914Sixer |
Sep 14 2018, 08:34 PM
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#2
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914 Guru Group: Members Posts: 9,122 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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Check wire from bottom sender to plug under battery tray. You will find that it is probably open. Sender and gauge rarely go bad.
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| R Dub |
Sep 14 2018, 08:51 PM
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#3
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Member Group: Members Posts: 123 Joined: 29-August 17 From: Burbs of Chicago Member No.: 21,387 Region Association: None |
Will do. Sorry to sound like a total noob but where on the block is the sender so I can follow the wire?
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| Dave_Darling |
Sep 14 2018, 09:29 PM
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#4
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914 Idiot Group: Members Posts: 15,161 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Underside of the motor, near the left-front corner. Pretty close to where the bottom of the dipstick is.
The wire goes across the front of the motor, up through the engine tin on the right, and plugs into a plastic box connector. The sender is a thermistor, a resistor that changes resistance with temperature. You can unplug the wire from the back of the gauge and check resistance to a ground. If you see "infinite" resistance, something is unplugged. If you see zero, the wire is shorted somewhere. If you see something in the tens or low thousands of ohms, that is pretty normal. --DD |
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| R Dub |
Sep 15 2018, 06:42 AM
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#5
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Member Group: Members Posts: 123 Joined: 29-August 17 From: Burbs of Chicago Member No.: 21,387 Region Association: None |
Awesome. Thanks for the info.
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