he tried, but it is coded by roush. he said even if we did some data loging, there is no way to modify there tune.

mike mentioned that about the plugs. he asked me to check the resistance between each plug. But i just cant see all 8 being bad.

 

Try swapping the COPs to different cylinders and see if the codes follow the COPs. If they do, you probably need some new COPs. What did the boots look like? Did you use any di-electric grease on the boots?

 

Get a tune made from scrach, and I dont see how you would have a bunch of bad COP's. but you might. take off the COP's that are throwing the cel to another cly and see what you get.

 

Locking the PCM is a load of crap. I did a stock code read with my Xcal2 and dumped it with the Xcal dump utility and sent the file to SCT. They had it decoded and ready to use in their software in a few hours. I sent the file to Justin at VPM and he he tweaked some parameters and returned it to me. It runs great, but I wasn't having the issues you were. I seriously doubt the tune has anything to do with COP codes.

 

If your tuner said this then you need to run FAR AWAY from him and never talk to him again because he knows absolutly nothing about the 5.4L 3V computers. You can not and I repeat can not use a stock lightning tune as a base. The Stock Roush tune can be down loaded and modified but it must be sent to SCT to get it done. 2V and 3V 5.4's use different computer tuning language.

Now with your issue if at anytime in there life the plugs were dropped(@autolite, warehouse, Roush, anyware)then there is a chance that the plugs are an open circuit and under boost this will cause a missfire. HT0 plugs are crappy you need to get a good set of Brisk plugs. Follow the sugestion from Windsor and swap the COP's around and see if the missfire code follows if it does than the COP is bad if it doesnt then the plug is bad. It is ashame that you are having issues with your roushcharger once you get it tuned by Troyer it will really wake it up if you decide to go that route still. I have had bad plugs and bad COP's and one bad injector which none of it was Roushes fault they were just faulty. I really hope you can find out if it is the plugs or the COP's that is causing your missfire so that you can start enjoying your truck.

 

i will try that in the morning and see what happens.
he uses diablo tuning. I also called diablo, and they said they could NOT open the roush files.

Yes, i agree. i am worried about what the local tuner said also. The only thing that is nice about him, is he is local.

My feeling is this tuning thing with troyer may take months, and with the truck running this way, that just cant happen.

i have been waiting 2.5 weeks from troyer, i think i have 5-6 more to wait. then when i get the tune i have to datalog and send it back.

Im a decent mechanic, but i have never tried tuning and i am lost as of what to do or where to start. any other good f150 tuners out there?

 

Once you get the COPs or plugs figured out, Roush's tune will hold you over until Troyer can get to you. If diablo can't crack Roush's code, that should tell you something. But Huitt24 is right, these engines are different animals. The 2v PCM has no provision to control your variable cam timing, not to mention your drive by wire throttle body.

I've seen every variable in Roush's tune that is different from stock because I use SCT's Advantage software. The only parameter that affects how the COP operates is timing.

My truck has the new style heads and there are only two sources of plugs, with only one being a colder plug than stock. These were Brisk plugs. They came 4 to a box. One set were properly gapped, the other were all closed. Your plugs can experience a lot of trauma before they reach you. Don't take it for granted that because they're new there's nothing wrong with them. Plugs are cheap and the only variable in your mix that could have changed anything dealing with spark. The boots for the COPs could also have been damaged on removal and reinstallation, as well as the COP itself. There are lots to check out before you blame the tune on your PCM.

When you removed your plugs, they did come out whole?

 

Check you vacuum lines and wiring to the variable intake track thing that was mentioned earlier. I had an issue when I 1st installed mine where the little white/blue check valve next to the S/C was put in backward, the truck would do this weird hiccup. I turned it around and all my problems went away. I will look for the picture I took for Roush. Everytime I talked to Roush they were extremely helpful and I always got through to them, maybe that has changed?

I got my Troyer tune recently and it was just short of 12 weeks, but worth the wait.

I know what you mean about not reading it. I tried using HP Tuners to read it and I couldn't, which is why I used SCT and Troyer. My tune from him was spot on, no need to datalog unless you see issues.

 

What? Roush uses basic F150 templates. For example, their PCE1 codes can be easily read and programmed as standard PCE1 codes. You can even take Roush's changes, overlay them on a standard PCE1 image and it works fine. I've never seen HP Tuners have a problem reading them either. Matched 100% to the Roush read from SCT. If Diablo can't determine that this is a standard, basic F150 template then, well... I have no words for it.

I'd like to throw in checking grounds, and check voltage going to the coils. Maybe a wiring mistake somewhere. Additionally, Ohm the plugs. There have been defects from the factory.

 

Duplicate

 

ckrawler where are you located? Theres almost always a decent tuner in any state.

 

Yes, they came out clean and easy.

i did a check again of all vac lines and checked for any leaks. Nothing. It was all installed correctly.

Mike mentioned this also.

Im in reno, nv and there is no sct tuners here. just diablo.



Ok guys here is what i did.

last night i checked the plug gap and put them back in. i also changed the fuel filter as rec. nothing changed .

this morning I swapped the #1 plug and coil to #5. and then the # 2 plug and coil to #6.
my codes p0355 & p0356 were the most common. i got those 2 codes daily.

I also decided to swap the front drivers side O2 sensor this morning for the heck of it. The old one was extended and i didnt trust it.

I was able to drive the truck for 45 minutes with no COP codes at all. the truck had more power and less hesitation than before. I can actually hear the supercharger coming on now and the tranny feels like it is shifting better. The truck also has a different exhaust tune? its running much better

A O2 fixed it? wtf? i dont know why i wasnt getting a code for it?

Anyways, on the way into work i dropped the truck into second and ran it down the street, once i decelerated, it popped a code for cop #2.

That means i have a bad cop or more than likely some crap HTo plugs. It looks like i was having 2 issues at once.

im going to swap the cop on 2 to cyl 5 and see if the code from 5 or 2 comes back. that should tell me if its a cop or plug.

Brisk plugs are hard to find. who carries them?

 

on the way home it popped code p0355. indicating coil 5 is failing. it did it on deceleration after jumping on the freeway.

im lost. if its now on 5 that was previously cyl 2 and i only saw 2 drop once before.

im swapping the other o2 now and i am going to check the resistance on plug 5 and 2 to start.


the truck has 66k on it. 200 since the roush.
dynatech headers
NO CATS
3" flowmaster exhaust with a 18" turn down (no tail pipe)
autolite HTo plugs gaped at .30.

it is calling for the rear o2's because they are not shut off until i get the sct.

any other thoughts guys?

is it a back-pressure issue?

im having a hard time believing my cops or plugs are at fault.

i had a 05 chevy with a whipple before and never had these kind of strange problems that the computer wouldnt call a code for.

 

Try getting them directly from Brisk. That's what I did. Some of the on-line modular engine performance shops carry them. Troyer might have them also.

 

i should also note. that it will do it anytime i drive down the street and hold the truck in 1st gear. it doesnt need to have any kind of hard load. cruising 25 mph at a higher rpm and then slowing down it will do it.