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Probably not necessary and a correction Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Thu, 4 Dec 2008 18:09:48 In Reply to: Re: Bad or corroded sensor wire, canada karl, Thu, 4 Dec 2008 13:53:52 Members do not see ads below this line. - Help Keep This Site Online - Signup |
According to the Bentley manual, the wire at the sensor is yellow/white. It doesn't go directly to the gauge - it goes to a 29 pin bulkhead connector at the main fuse/relay panel, and from there to the gauge in the instrument panel.
As the others have noted, the most likely problem is the wire just fell off the sensor. If the wire has corroded, it will have corroded right at the sensor - typically the bit of wire between where the insulation stops and the crimped slip on connector for the sensor begins. If so, just strip back the insulation an inch or so, and crimp on another connector - usually available at most autoparts stores or Radio Shack. If the wire failed mid-span somewhere, again, most likely it will be in the engine compartment. That's where the environment is the worst. A wire won't fail in the relatively nice world of the instrument panel. Simply splice in a fresh wire - no need to run a whole new wire.
The temperature sender is on the side of the block, just below the distributor.
The sender resistance should be 50 ohms when the engine is hot; the resistance will increase from there. The quick test is the same - assuming the wiring looks sound, turn the key to ON, and touch the sender wire to ground. If the gauge moves upward, the gauge and wire are OK and the sensor is suspect.
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