Problem?hpop,ipr,injector o-rings or injectors? - Ford Powerstroke Diesel Forum
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Old 02-18-2012, 07:10 AM
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Problem?hpop,ipr,injector o-rings or injectors?

So I have a little performance problem that when my truck warms up the oil temp is about 120 degrees when you give her the throttle it starts to do like a chug almost like there is a miss on one of the cylinders or multiple cylinders and it losses it's performance runs awesome when it is cooler under 110 and the oil systems and injectors are all stock?


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Old 02-18-2012, 07:57 AM
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Does it only get up to 120*F on the EOT? What about ECT?
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Old 02-18-2012, 08:02 AM
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Quote:
Originally Posted by jesilvas View Post
Does it only get up to 120*F on the EOT? What about ECT?
Well by stock gauge it is in the warmed position I don't have a aftermArket gauge monitoring the ect
And no the eot keeps climbing to the most I have seen 157

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Last edited by 72Ford250; 02-18-2012 at 09:45 AM.
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Old 02-18-2012, 10:20 AM
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How are you monitoring the EOT if you can't monitor the ECT?
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Old 02-18-2012, 10:22 AM
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With a gauge that has a temp sensor that I have plumed into the hpop reservoir fill plug


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Old 02-18-2012, 10:30 AM
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Oh gotcha.
It could be many things. I'd just scan it first.
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Old 02-18-2012, 05:37 PM
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OH i should add it is bad with the chip (php) on 65 performance
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Old 02-18-2012, 05:56 PM
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Yea it'll be bad cause there's obviously something wrong. So the extra power the chip is requesting isn't there and only makes the problem more apparent.
Scanning for codes is about the only thing you can do.
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Old 02-18-2012, 10:39 PM
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I have a similar problem... I haven't taken a direct reading of the oil like you have, but when I plug the MODIS into the truck and monitor the data stream, my EOT reading is never above 140ish. As a result, I can't do a cylinder contribution test, and overall my truck has been driving like a slug. A few months back I towed my friend's disabled van (about 5500 lbs) on my car hauler that weights about 1000 lbs. I could have sworn there was a soil plough and three point hitch behind my truck ripping through the pavement.

I changed the sensor to make sure, and it does the same thing. I've also had success unplugging it to fool the computer into defaulting to a 207 deg F EOT reading (with a check engine light), and I've also been able to change the perceived temperature by putting different resistors across the connector. So far as I can tell, the EOT circuit is a constant-current type circuit that lowers voltage as the EOT sensor's internal resistance lowers as true EOT rises.
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Old 02-19-2012, 07:07 AM
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I have a somilar issue but I never take my truck over half throttle til its completly up to operating temps...

The oil gets thinner when it gets hot...with that in mind, you will have less pressure to your injectors. On your performance tune, you computer is requesting a higher demand of oil from the hpop then it can supply so it starts cutting out.
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