Adriel |
06-20-2015 04:39 PM |
Thank y'all for all the help! :D
Quote:
Originally Posted by BillGrissom
(Post 3488192)
Some people put too much trust in gages. There is no physical way that the coolant (and sensor body) could truly vary in temperature fast enough to make the needle "twitchy". Maybe 1 sec oscillations max.
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Bill, actually, I use them to trend and give a rough picture. If the gauge says the engine is running hot, see if gets higher. It didn't, so kept driving. If I trusted the gauge, would have immediately pulled over.
At first, the swings seemed to be logical as responded to the terrain. However, down the ramp and onto surface, got wild. Bet the water moved.
Quote:
Originally Posted by Charlie Foxtrot
(Post 3488240)
Sure sounds like the coolant temp sensor wire. Could be wet, could have a bare spot, or a broken conductor. The sensor completes the gauge's circuit to ground through a temperature variable resistor. Intermittant connection (broken wire) = twitchy gauge. Short to ground (bare wire) = pegged temp gauge needle (hot). Diesels tend to shake, and that flex's the wires. Good luck.
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Charlie, yes, by the connecter there is a bare section from manufacture and the plastic shrinking. Can you still get the boots?
Quote:
Originally Posted by barry12345
(Post 3488377)
Why I suspect the connection or sensor wire as well as mentioned. Fresh water is not electrically conductive unless something like salt or another contaminate is in it. Now the blast pressure of pressure washing could shake up an old wire or connection easily enough.
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Barry, yes, as I said, bare wire due to the boot disintegrating.
Quote:
Originally Posted by vstech
(Post 3488700)
I have had the same symptoms when the alternator body was not getting a good ground, or the body to block cable connection was bad... GROUND is needed for the sensor to work right!
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Thursday was out all day, plus most of today, and the gauge showed logical readings, not getting a little over 80*C. So, think all that happened was temporary, right?
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