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Stalling at stoplight

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Old Oct 19, 2013 | 11:29 PM
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Stalling at stoplight

Hey everybody I have a 2003 F250, 7.3L with around 225k on it.
It started having issues a few months back where it will start fine, run fine when cold, runs fine down the highway but once I pull up to a stoplight or pull in the driveway it dies. Then engine tone becomes muffled and if you keep the rpms up around 1000+ rpm it wont die, and when you start going the engine tone gets loud again. I just replaced the ICP sensor and it made things worse. now it doesn't want to idle and its harder to keep it running at stoplights. It started this shortly after I got it back from the shop where they put in new GPR and valve cover gaskets(to fix the cold start issue)
 
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Old Oct 19, 2013 | 11:40 PM
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do you have a way to monitor the ICP?
Is the tin nut on and tight on the IPR?
 
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Old Oct 19, 2013 | 11:45 PM
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I haven't checked the IPR yet. No I don't have any way to monitor the icp. I'll check with my brother in law and see if he does.
 
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Old Oct 20, 2013 | 12:10 AM
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Where are you located? Maybe one of us can scan your truck for you.
 
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Old Oct 20, 2013 | 07:06 AM
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Where did you get your ICP sensor? What happens if you unplug it and just idle?
 
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Old Oct 22, 2013 | 09:10 PM
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hooked a scanner up, no codes came up. got the ICP sensor at napa. if I unplug it, it makes no difference on the idle.
 
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Old Oct 22, 2013 | 11:36 PM
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What kind of scanner did you use? Most scanners will not pull codes from our trucks.
 
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Old Oct 23, 2013 | 12:44 AM
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Originally Posted by Mr. J
hooked a scanner up, no codes came up. got the ICP sensor at napa. if I unplug it, it makes no difference on the idle.
Your ICP sensor is bad. Replace it with a Motorcraft one ONLY.

If you unplug it and nothing happens that means its bad.
 
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