Sorry mike I did the quote to answer your questions and the answering didn't turn red? But they are at the end of each question... I'm not sure if my strategy tune uses the ebp...

 

Man, the rough idle and white smoke sounds like a FICM, or possibly an injector or two. If it was me, I would really try and run a cylinder contribution test on it to see if any injectors are falling out. If it's one or two injectors constantly, it probably just needs a couple replaced. If it's bouncing around to different cylinders, it's probably the FICM. I'll see if I can piece a FICM together for you this week to send your way.

 

Well I did the cylinder contribution test and the test came out good. It's hard to see it on the graph but it never moves more than 100 on the graph but it's for all the cylinders...

Can I save the file for the contribution test and send it to you? I'm not sure if it's possible?

I have been noticing high egt's all across the board even in the city... I checked all the intercooler boots and they are good... Would It be a bad flex pipe? I looked all over then and didn't see any soot on the fire wall... I guess I could pull them off and check them.

I read on powerstroke nation that a bad turbo could cause high egt's, which wouldn't that explain my low boost? But wouldn't I get a cel for low boost?

This truck is driving me nuts!! Now I know why it was only $10,000...

I hooked back up to my car hauler to get some siding yesterday and even with the trailer empty it's a turd!!

Thanks alot mike for your time and help!

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Well it doesn't have a rough idle anymore but it sounds like it has a miss

 

Hey I was skimming some of your posts, I see you havn't had this truck long. How is your air filter, is it the stock filter or an aftermarket?

 

Let's get back to the basics here. I just went and re-read this thread, I keep confusing other people's trucks together!

How long have you had this truck? Has it always been this way with the poor mileage?

I find it interesting you cleaned the turbo and boost went up a touch. What kind of boost numbers are you seeing now? Still only like 18 max right? That's low... You say it's getting hot, how hot are we talking? What are EGT's? On stock tuning? If it's getting hot, you're getting fuel.

I think we have two separate issues going on, and both are killing your mileage.

Issue #1) is an injection issue. Your two stroke sounds and white smoke mean injectors are simply not firing correctly.

FICM has been tested and is "good" as far as we know, but still a slight suspect.
Cylinder contribution test shows injectors are good? Did you buzz test them too? When you tested it, was it warm already? Maybe repeat this test cold. Also make sure you're testing the FICM cold too. I know you said you monitored ICP desired vs actual, did you get IPR duty cycle too? Could you get me some numbers to verify? Maybe at idle (when it's having the issue) and some driving around and a WOT run? How hard would it be to get these numbers?

Aside from this...

Issue #2) There is a low boost condition. I would try and fix issue #1 first, as poor fueling could be causing your boost issues, though it doesn't sound it since your truck is getting hot, but low on boost. Did you pull the boots off and look them over? A lot of times they crack on the bottom where you can't see. The turbo itself could just be junk. What did it look like when you disassembled for cleaning? Any pics? Up-pipes could certainly be leaking. In fact it could be leaking right off of the turbo connection. Did you have a difficult time getting the turbo back in after cleaning? Sometimes it's hard to get it to seal there with the up-pipe already tightened to the manifolds (with the solid up-pipe found in EGR delete kits).

What about other things? You've got a fresh oil change? How old are fuel filters?

How does the truck drive other than the poor mileage and low boost? Any smoke ever while driving?

 

Ok I'll go over all of this when I get out of work and get you all the answers...

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How long have you had this truck? i have had the truck for 2 months.

Has it always been this way with the poor mileage? when i first got the truck it was ony getting 8.6mpgs

I find it interesting you cleaned the turbo and boost went up a touch. What kind of boost numbers are you seeing now? my boost seems really low compared to other 6.0's i have driven, i only see 10+ if i wot. crusing on the highway no hills 0-1psi, little hill3-5psi. this is all in OD cruise control set to 60mph. in town from a stop,half throttle lucky to see 5-7psi, but it dont build up boost till i hit like 15-20mph. and the truck will still not do a power brake no matter how long i hold it wot!!!

Still only like 18 max right? i have never seen 20 psi. That's low...

You say it's getting hot, how hot are we talking? driving in town it climbs pretty fast, ill see 700-900 in town 1/2-3/4 throttle. i see the high egts (1,000-1,100) when im crusing in OD 50-60mph slight hill. What are EGT's? On stock tuning? yes stock tuning. If it's getting hot, you're getting fuel.

I think we have two separate issues going on, and both are killing your mileage.

Issue #1) is an injection issue. Your two stroke sounds and white smoke mean injectors are simply not firing correctly.

FICM has been tested and is "good" as far as we know, but still a slight suspect.

Cylinder contribution test shows injectors are good? from what i understand with the AE my contribution test is good

Did you buzz test them too? i did the buzz test and they all buzzed then one at a time and they all sounded the same.

When you tested it, was it warm already? Maybe repeat this test cold. Also make sure you're testing the FICM cold too. i have done all the test cold and warm and no difference.

I know you said you monitored ICP desired vs actual, did you get IPR duty cycle too? Could you get me some numbers to verify? Maybe at idle (when it's having the issue) and some driving around and a WOT run? How hard would it be to get these numbers? ill get you these numbers tomorrow after work sorry been busy with construction on the house.

Aside from this...

Issue #2) There is a low boost condition. I would try and fix issue #1 first, as poor fueling could be causing your boost issues, though it doesn't sound it since your truck is getting hot, but low on boost. Did you pull the boots off and look them over? i pulled all 4 boots off and cleaned then and checked for cracks and they are all good.

A lot of times they crack on the bottom where you can't see. The turbo itself could just be junk. im starting to think its a bad turbo bc my boost numbers are low and when im pulling somthing it is a turd!!! my hemi could out pull this truck, i would even put money on it that my ranger would out pull it...

What did it look like when you disassembled for cleaning? Any pics? sorry no pics but it wasnt that bad at all, a little soot and a little pitting on the unison ring but not bad it cleaned right up.

Up-pipes could certainly be leaking. In fact it could be leaking right off of the turbo connection. Did you have a difficult time getting the turbo back in after cleaning? no it went together pretty smooth.

Sometimes it's hard to get it to seal there with the up-pipe already tightened to the manifolds (with the solid up-pipe found in EGR delete kits).

What about other things? You've got a fresh oil change? oil was changed 1,000 miles ago, but i am going to change the filter out bc its a valvoline, and its the original cap not a new one.

How old are fuel filters? fuel filters are 1,000 miles old and they are from international, and i still cant get my new knurled brass **** in b/c the old one is striped... i have to take it apart.

How does the truck drive other than the poor mileage and low boost? the truck drives like a champ other than the high egts and the 2 stroke thing every now and then. but it is a trud! i dont dare racing anyone bc its so slow... it just has no power what so ever.

Any smoke ever while driving? it only smokes when it does the 2 stroke thing i can clear the block with smoke if i dont let off... but it wont let me go anywhere... you race 4 wheelers? like a yamaha blast running rich! smokes like a champ and wont get out of its own way... i used to race a ktm 250 sx in the gncc, so that how i can explain the 2 stroke bc its just like that.

and to papachuck- its an AEM dry after market cold air intake system. and i cleaned it 1,000 miles ago.
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Ok, I'm still going to say we have two separate issues.

We've got smoke/two stroke thing, and we've got a boost issue. At this point without being able to scan it or put my hands on it, I'd say it needs a turbo. I'd hate to see you buy a turbo and it not fix anything though. If you pulled it apart and cleaned it, and it's still not boosting up more than 10lbs, there is something seriously wrong here. I would try and fix this first.

You can pick up a good stock used turbo off the boards for $250-$400 pretty easily. I'd probably try that myself. Worst case you can just resell it if it doesn't work out. It could also just be the VGT solenoid on the turbo not letting the vanes open/close properly. Though the VGT solenoid is expensive enough I'd probably just start with a used turbo complete.

Next we can try and resolve your poor running issues when first fired. This isn't really all that uncommon. Could be the FICM still, could be weak batteries, could be an injector or two, could be a chaffed wire harness... so as you see it can be a few things, but we can narrow it down pretty easy.

Your poor mileage is most likely contributed by the low boost numbers. You're throwing a bunch of fuel at it and no air, so the fuel is being used, no air to burn it properly, truck runs like dog poo and you get poor mileage. That all makes sense. At this point, I'd say it's a turbo for your first issue.

 

Ok cool, well I've been looking all week for a used one and not too much luck... Im looking for a 03 or 04... But I'm thinking about getting a powermax...

Thanks for all the help mike!!

 

Just so you know, any year turbo will work bud. 03 is the only one with the cool whistle, so usually they sell fast. 05-07 will work just fine. The pedistal mount is different for the 03's, but you can still use it on yours, just only be able to use 2 of the 3 turbo mount bolts, no big deal.

Powermax is a great turbo too.

 

I havnt seen where you got any codes, have you gotten any codes? I may have missed them, you kind of bounce around a little. On the low boost issue, have you checked the EBP tube, MAP sensor and tube and the MAF? I would take the air filter off, make sure nothing can get sucked up and throttle it. You should hear the pitch change from the turbo.