Engine Oil Temperature Sensor Help!!!! - Ford Powerstroke Diesel Forum
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Old 10-24-2012, 09:59 PM
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Engine Oil Temperature Sensor Help!!!!

I am having problems with smoke right now with my truck when it cold starts but not plugged in only when I don't plug it in and its below 45. So today I unplugged the EOT and went to start the truck after the two minutes and the truck rompped four times and died the truck has 5w40 t6 oil too. It has new batts and new plugs. Now when I plugged the EOT back in it started up, tons tons and tons of smoke all raw fuel. I noticed that I hear a clicking in the koeo mode. I also hear the relay turn on and stop making sounds after like 10 seconds while unplugged and plugged. What is the problem??????????
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Old 10-25-2012, 03:57 AM
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I have no idea about the default values of the EOT sensor, but if I had to guess, when you unplugged it, the computer probably read it as being hot and didn't turn on the glow plugs.

The clicking is probably your GPR. I'd say it needs replacing.
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Old 10-25-2012, 05:09 AM
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Keep the ideas coming!!!!
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Old 10-25-2012, 06:35 AM
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clicking come from d/s front area? If so, thats the ABS system kick'n in. Wait for 45sec-1min, prior to firing up. If you have the GPR-LED mod, you'd see that the actual gp relay stays on WAY LONGER than the dummy WTS light goes off. meaning, ur try'n to start ur truck in cold temps, with 11v. instead of the 12.5-ish volts.

Have you unplugged the UVCH and ohmed outthe gp's?
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Old 10-25-2012, 07:35 AM
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Yes ohmd out at 0.7 all of them. The clicking is coming from the gpr area! But I heard the relay come on after I plugged the eot in and it stays on for 10 seconds if that!
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Old 10-25-2012, 08:13 AM
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Quote:
Originally Posted by hondaracer315 View Post
Yes ohmd out at 0.7 all of them. The clicking is coming from the gpr area! But I heard the relay come on after I plugged the eot in and it stays on for 10 seconds if that!
Then i'd say its doing what ZAAIRMAN has mentioned...working correctly.
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Old 10-25-2012, 08:21 AM
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Have you tested to GPR to confirm it's functioning correctly? A voltmeter can answer your question. Just be sure it's relaying max voltage to the glow plugs when the key is turned on. It clicking on/off doesn't necessarily mean it's working correctly...
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Old 10-25-2012, 01:47 PM
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Haven't tested yet but I bought the stancor it's on its way to ak
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Old 10-25-2012, 08:18 PM
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Here is an update today, I turned the key on and listened to the gpr it was on for 15 seconds and temp was 30 degrees. Unplugged the map sensor, and started the truck. It didn't smoke for the first 10 seconds then it started puffing like a train. Plugged the map sensor back in nothing changed. Shut the truck off and restarted and it didn't smoke until about minute later.

Chris
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Old 10-26-2012, 06:45 AM
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with it idling, unplug the MAT sensor. Its located in the middle of the spider assy...
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