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1994.5 - 1997 7.3L Power Stroke Diesel  

Intermittent low power with check engine light.

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Old Jun 17, 2024 | 05:43 PM
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Intermittent low power with check engine light.

Hello,

Today on the highway my truck started having almost no power and the check engine light came on. I took the first exit and the truck stalled as I coasted down the ramp. I restarted the truck and it was fine. It has a nice idle, plenty of power, and correct fuel pressure. This has happened two times. I hooked up my cheapo scanner with Forescan and was not able to get a code from it. The truck is getting AC work tomorrow so I can have the shop read the codes.

I found the ICP nut was a little loose. I am headed to Ace to grab a real nut for the ICP. I am tired of it loosening up. Would a loose ICP nut cause these symptoms?
 
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Old Jun 18, 2024 | 08:39 AM
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From: Bahstun
Yes a loose IPR nut will cause that. IPR regulates pressure to the injectors

Dont use a real nut, only a tinnerman nut.

Magnetic flux wont work like you want it to, it only works they way Ford engineers want it to.
 
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Old Jun 18, 2024 | 09:25 AM
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Tighten the tin nut and then put a dab of RTV on it to prevent it from loosening.
 
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