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post #1 of 6 (permalink) Old 03-15-2010, 12:49 AM Thread Starter
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replace IPR?

how do you know if the ipr is bad?i had icp codes come up so i replaced it,now the same thing is happening,i was told its the ipr but i havent had any codes come up and say that so how do i know?

95 F-350 4X4 5spd PSD cai,dp,stacks,guages,4 inch lift
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post #2 of 6 (permalink) Old 03-16-2010, 12:59 PM
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Re: replace IPR?

every bad IPR valve I have ever seen the engine didn't run

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post #3 of 6 (permalink) Old 03-16-2010, 06:22 PM Thread Starter
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Re: replace IPR?

Well it runs good for about an hour maybe more depending if I'm on a highway then the cel comes on truck dies,ill wait about a min its tuff to start but it will then it will go for the same amount of time.I had codes for cps and icp I replaced both and still have same problem.

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post #4 of 6 (permalink) Old 03-17-2010, 12:49 PM
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Re: replace IPR?

Not to be a smart a##, but how long had it been since the last oi change and what oil are you using.

Bryan

97 F250 SC LB 4x4 Auto 368,000 miles, AD's, 3in down pipe, Straight Pipe,EBPV deleted, DIY Intake, Racer X converter and valve body, Beans tunes
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post #5 of 6 (permalink) Old 03-17-2010, 08:14 PM Thread Starter
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Re: replace IPR?

lol! its alright just changed it a week ago with rotella 15w40

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post #6 of 6 (permalink) Old 03-18-2010, 09:59 PM
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Re: replace IPR?

When IPR problems occur you have a hard start condition when the truck is warm.... OR it stalls every now and then ... you need to monitor the HPOP pressure with a scanner and see what it does when you step on the pedal etc . etc. I fthe response is linear it is ussually another issue if the pressures are all over the place ussuallly the IPR needs o-rings or the tin piece of crap on the end is loose....

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