loss of power and can figure out what it is - Ford Powerstroke Diesel Forum
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Old 11-23-2010, 04:41 PM
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loss of power and can figure out what it is

as the title says, a couple months ago my truck just over a couple days lost a good amout of power. now i know im not starting out with a lot but it did loose power

since then it has been runing the same, loss of power. been this way for about 3 months.

it acts like it has miss in it or it shakes or pulsating when under a load. i have a tc lockup switch and when i lock it like in 2nd gear under a good load at low rpms it will miss pretty good. almost like its choaking.

i can get a hold of a pretty nice scan tool whenever i need it and ive looked at everything. i took it out on the highway and it maintained 2750 ICP PSI. thats not bad for an old 15*. it comes up with a intake out put too high code but that s just because i dont have a place in my intake to plug it in. it also comes up with a ICP code sometimes but if that was bad then it wouldnt be runnning at all would it??? or can that just kinda go bad and still run the truck just not that great?

also i was about to push 31lb boost and i was seeing high etgs, not bad but good and high. the truck ran really well for being stock with just custom tunes intake and exhaust. now this all happened and i cant really get over 20lb boost and im seeing lower etgs and it has a power loss.


any ideas????? please thanks you
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Old 11-27-2010, 05:27 PM
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1) Check heads for block plug leak( front and rear of heads)
2) Check rear turbo area for up-pipe leak

Yes some cases the truck will still run if the ICP is faulty. That code may be in their because your chip is going over the stock settings for ICP pressure which the chip maker should of adjusted. ( << don't know thats what i've been told i dont program)
Also it might be your injectors or injector 0-rings
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Old 11-28-2010, 07:10 AM
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ive already checked the up pipes. but if it were them it would smoke like a train and this thing wolnt smoke to save its life

and what do you mean head block leak plugs? the plugs at the end of the rail in the head? this has been happening for about 4 months and then truck never leaked oil. untill two days ago but that doesnt matter.

well since this have been happening, i have gone from ts tunes to gearhead tunes.....no change. im thinking it the mechanical side of the injectors????

thanks a lot
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Old 11-28-2010, 07:30 PM
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Check the UVCH, look for burnt connectors, when you get your hands on a scan tool check cylinder contribution. This test gives you and IDEA of what injectors arent firing right or even at all. The reason I say IDEA is if you have stage 1s or bigger the test is almost no good. Bigger injectors can keep the diffrences in cylinders hidden due to more power and almost give you nothing accurate or will bounce around cylinders. How many miles do you have on your factory sticks?
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Old 11-28-2010, 07:36 PM
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does your icp have any oil in the connector?
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Old 12-04-2010, 08:38 PM
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No they are new replaced them not too long ago. And u can't do a cylinder contribution test on a obs or at least not on a obs. I don't have it infront of me but I off the top of my head I can do a koer self test GP test and koeo self test buzz test. Not on a nbs 7.3 I've done a cylinder contribution test and I know what ur talking about. I don't know how many miles are on this set of sticks. Their is a lot of miles on the engine but I bet they have been replaced at least once. And they are stock size 90 cc.

So yeah man, I don't know. I'm thinking icp or ipr sensor or I need a new set of sticks.

Yes yes yes there was some oil in my icp sensor so I got some electical cleaner ( kinda like brake cleaner) and cleaned it out. But this was after this had been going on for about 3 months and it didn't change anything.
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Old 12-04-2010, 09:01 PM
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The oil in the sesor means the seal inside has gone bad and may be causing a short. As far as a CCT I can go outside and stick my solus on my truck and do it. You can do it on a OBS truck however not on a 94.5 or early 95 with the Ford OBD1 connector. Now you cleaned the little screen on the fuel bowl and everything right? I don't want to make you sound dumb just trying to help
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Old 12-05-2010, 05:20 PM
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ok well I an get a new icp for like 50-70 bucks I think, I forget. cause I have gotten an icp code before. just didn't wanna replace it if that's not it. really? well I have the OBD II conector, so your saying I should be able to do it? I got a gennsis (sp) 2.0 and 3.0 and another kind but I forgot the name. oh yeah I cleaned it a wile ago, when all this started. maybe ill try to to do cct then. I can only imagine then numbers ill see. haha
and thanks a lot man im tired of this thing being slower than it should be lol
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Old 12-05-2010, 07:11 PM
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Yea its under functional tests along with buzz test. Try an ICP if you can get one with 50 bucks. If you were colser i could narrow it down for you.
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Old 12-05-2010, 07:22 PM
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your injector drive module (IDM) may be dying...........
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