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03 5.4 temp sensor/overheating

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Old Jul 19, 2008 | 09:14 AM
  #1  
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79man
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From: Southern Illinois
03 5.4 temp sensor/overheating

My dad has an 03 F250 with a 5.4. When he lets it idle (like in a fast food drive thru) the temp guage will climb, dash light will come on, and it will start shutting down cylinders (just like it is supposed to when it gets hot). BUT, it's not hot. If he shuts it off, and immediately starts it back up, it is fine.

He took it to the local Ford dealer, and they put a new temp. sender (the one in the head) and a new wiring pigtail, but that didn't fix it. After calling the dealership back, the mechanic acted like he didn't know what else it could be.

Any ideas?
 
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Old Jul 20, 2008 | 09:47 PM
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bad PCM perhaps?
 
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Old Aug 5, 2010 | 05:03 AM
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5.4f250sd
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Mine does this can anyone chime in?
 
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Old Aug 5, 2010 | 10:55 PM
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Replace the thermostat, they are a 2 stage design and will start to stick when they get older.
 
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Old Aug 13, 2010 | 03:36 PM
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5.4f250sd
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Thanks moto mel!!!! You were spot on!!!!!

https://www.ford-trucks.com/forums/9...p-problem.html
 
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Old Aug 13, 2010 | 06:00 PM
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Moto Mel
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Originally Posted by 5.4f250sd
Thanks moto mel!!!! You were spot on!!!!!

https://www.ford-trucks.com/forums/9...p-problem.html

Glad to be of help, Me and a few others at least.
 
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