ipr base line?

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Aug 15, 2011 | 12:48 PM

429 f-100

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Laughing Gas

Joined: Nov 2010

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From: oriental NC.

ipr base line?

ipr numbers //what should my ipr numbers be hot at idle // 1200 rpm // and 1800 // and what is window on % i think maybe either my icp or ipr might be on the way out im seeing less than 400 at idle i got a stumble that seems to coinside with the pressure

Aug 15, 2011 | 02:46 PM

03_PSD

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mines around 500 at idle, i'll check the different rpms on the way home using my scangauge!!

Aug 15, 2011 | 06:02 PM

429 f-100

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Laughing Gas

Joined: Nov 2010

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From: oriental NC.

thanks glen , i checked my manuals but cant find the range ?? yea im gonna hook my scanner up on the way home to.but i got a hpop gauge that i can read all the time for pressure . gonna look at % . and my lpop witch i also am suspecting might be getting weak.

Aug 16, 2011 | 08:59 AM

03_PSD

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if it stumbles at idle you might want to disconect the icp and see if it smooths out. if it does then you have a faulty icp.

driving home yesterday i checked my numbers at 1200 rpms and flat ground i was seeing around 700 and at 1800 rpms it was around 1500 on flat ground. these numbers were in 6th gear too.

Aug 16, 2011 | 07:03 PM

Jmudweiser

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From: Vacaville, Ca.

the % duty cycle should be around 30% if its 60% IPR is going bad.

Aug 16, 2011 | 07:17 PM

SkySkiJason

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From: N.GA Mountains

Idling should be 500ish psi, but more importantly about 10% duty cycle. At WOT you want to see 2800+psi and hold that from 60-90mph and never go over 40% DC. If you drop to less than about 2200psi or higher than 40% DC - somethings up. Dirty IPR? IPR orings? Weak HPOP? Failing injectors? Bad inj. oring(s)?

We'll need more info...