Temp Gauge Not Working

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Dec 19, 2012 | 06:20 AM

Muddy86F150

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From: Dublin, Ohio

Temp Gauge Not Working

I have a 2003 F350 and this morning when I jump in the truck to head to the office I see that the Check Gauges light is on and that the temp gauge isn't working. Everything was fine last night when I shut the truck off. This morning the truck is blowing out hot air once it gets warmed up. I really cant check anything right now since I am at the office I just wanted to spit ball some ideas and of course waste time at the office looking around on this site...

Thanks
Phil

I should probably add that this is my first 6.0 so knowing the locations of wires and sensors is not my strong suit yet but I can figure it out fairly easily. But any tips will be great.

Dec 19, 2012 | 06:38 AM

MC5C

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The first thing I would check is the temp sensor. If you follow the big upper rad hose to the block, it goes over the thermostat. Just to the left of the thermostat is the temp sensor.

Brian

Dec 19, 2012 | 07:11 AM

Muddy86F150

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From: Dublin, Ohio

Will do Brian. Any idea what Ohms and volts should I expect to see?

Dec 19, 2012 | 07:42 AM

MC5C

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Nope, I would personally inspect the wiring, reseat the connection and if that did nothing I would change it for a new one.

Brian

Dec 19, 2012 | 07:57 AM

Lilpooh

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The first link will take your to the coffee table books, click on the 2003 book for sensor location.

DTS Articles - Coffee Table Books

The next link will give you the EOT voltage hi/low for codes to be set.

http://www.motorcraftservice.com/vdi.../Dobdsm305.pdf

Sorry, I don't know what the ohms should test at.