Ordered my 6.0

[syndicatesteve]

shit we have too many damn speed cameras on our freeways here in Arizona to even speed!! I rarely get to throttle up, well maybe on the way to vegas

 

[BOSS]

Sounds like Justin was right on the money then!

I think J suspected a fuel delivery problem right?

And BTW, you owe me the money in your purse.



B

---------- Post added at 08:41 PM ---------- Previous post was at 08:40 PM ----------

So, how about the vids with the ass ends sideways and the huge amount of tire smoke?

I saw those rear tires when he was here before this major malfunction...and uhhh, he's already been doing plenty of that! I can't IMAGINE what that new and improved power feels like at the throttle...man


B

 

[JKmotorsports]

BTW, are you gona just not use cats anymore, what about inspection (not that you can't get passed somehow anyways )

Ordering my longtubes, two Magnaflows, and an x-pipe tonight. No comment on the cats, since it's illegal not to have them

hows that 4l60e gonna hold up ya think?

Haha, it's not. I'm going to TRY to take it easy until I rebuild the trans. The rebuild kit is about $1K that will hold up to about 650hp.

So, how about the vids with the ass ends sideways and the huge amount of tire smoke?

I gotta gather the funds for a new set of tires first. The current rear tires don't have much life left on them, so I have to take it easy for now. But when it's time for new tires, it's on

 

[JennaBear]

I think J suspected a fuel delivery problem right?

And BTW, you owe me the money in your purse.

No, the very first thing Justin said was that he thought the cat was plugged. Didn't he tell you to remove it and come back? As I recall it still wasn't an injector problem, you knuckleheads did that on your own when checking everything out

Since it was different from bank to bank, and worked before hand, he was pretty sure it wasn't fuel delivery.

 

[COTahoeLS]

I love Jenna... She's clever...

 

[JKmotorsports]

No, the very first thing Justin said was that he thought the cat was plugged. Didn't he tell you to remove it and come back? As I recall it still wasn't an injector problem, you knuckleheads did that on your own when checking everything out

Since it was different from bank to bank, and worked before hand, he was pretty sure it wasn't fuel delivery.

He did mention the cats as his first diagnosis.
We had a bad pin on an injector plug which we weren't aware of at the same time we were diagnosing the p0300. When we pulled the cats, the engine was still idling and running very poorly due to the bad injector plug we didnt know about, so we figured the cats weren't the problem. The pcm finally threw us a p0200 injector code later on which BOSS found to be a pin coming loose from one of the injector plug terminals. It didnt hit me until yesterday that removing the cats the first time didnt really tell us anything since the one injector wasnt working.

 

[BOSS]

No, the very first thing Justin said was that he thought the cat was plugged. Didn't he tell you to remove it and come back?

He did.

As I recall it still wasn't an injector problem, you knuckleheads did that on your own when checking everything out

Not true! I swapped the plugs and pulled a 303 #3 misfire. Thats when I hit the #3 with the noid light and noticed I lost light when I gave the injector cable a gentle tug. By reseating the individual cables into the harness, I got the connectivity back.

It didnt hit me until yesterday that removing the cats the first time didnt really tell us anything since the one injector wasnt working.

Cough it up ..... I need a new SC


B

 

[JennaBear]

There were not injector codes until after you started messing with it....cylinder 3 is on the driver's bank which was running just fine...the passenger side was the one having major problems

 

[blueflamed03]

Sweet, glad you got it fixed man!!!

 

[BOSS]

There were not injector codes until after you started messing with it....cylinder 3 is on the driver's bank which was running just fine...the passenger side was the one having major problems

Don't forget, the driverside went lean and the rough idles started when Jeff was 20mins from my house on his way back to Austin. It was then that we checked hoses, wires for burns etc. We hadn't pulled any cables.


I'm not trying to be sensitive here, but I feel clearly there was an injector cable or harness issue that I don't believe JK nor I caused.

SO, with that said this is the entire chronological breakdown of what happened as best I can remember. You can make up your mind if you want to give me that money in your purse



Got tune - Justin showed lean on pass (AFR is on driverside)
No codes reported
Leaned out on the driverside/rough idle 20mins after leaving BOSS's house
Checked hoses for vaccum leak, checked cables
Removed cats
Checked springs on pass side
Jeff drove back to Austin at this point
I replaced o2 sensors
(still lean, rough idle)
Bought me a code scanner!
Pulled open injector circuit P0200 and P0300 multiple misfire P0300
Cleared codes
Pulled open injector circuit P0200 and P0300 multiple misfire P0300
Cleared codes
I replaced the plugs
Noticed #4 plug was much darker than the rest
Pulled a P0354 code - ignition coil d malfunction (#4 cylinder)
Cleared codes
Pulled a P0354 code - ignition coil d malfunction (#4 cylinder)
Cleared codes
Changed #4 coil
Pulled a 0303 misfire on #3 cylinder
Cleared codes
Pulled a 0303 misfire on #3 cylinder
Cleared codes
Checked all inj and plug cables
Pulled a 0303 misfire on #3 cylinder
Cleared codes
Noid light on #3 - light blinked ok/light dimmed with light pressure
Reseated pins into injector plug
Bingo..no more lean on driverside, no more misfire or open circuit
JK drove back to Austin
JK found vac leak at egr
EGR removed
p0300 codes reported for misfires
JK removed cats
no more p0300!

So as JK said, he and I were not aware of the p0200 or the p0300 because it was midnight and neither of us had a scanner at the time. I do think it's strange that a an open circuit and misfire showed up out of the blue when we didn't pull any cables. So, all in all, our removing the cats did no good - because there was a problem with the injector cables, specifically #3.

That's my diagnosis anyway. Take it for what it's worth...just an educated guess as I am not the expert.

 

[Justin]

The injector wire being loose is a very MINOR issue when compared to a completely plugged up cat. The truck was showing a lean condition on bank 2, but it was also down at least 150hp from what it should be, as it was running SLOWER at high rpm than a stock 5.3L did 100% because of that plugged cat. There have been guys that have actually destroyed their engines because of a plugged cat.

The injector harness having come loose had absolutely nothing to do with the problem that was causing the misfires and poor running that was encountered when I updated the tune, as everything was connected properly. I've driven 50 miles before with an injector that was losing connection and it does run rough, but absolutely nothing like was experienced.

There at Rickords, connections were wiggled and checked all over the engine, that is likely when the injector harness was bumped and it started to work itself loose.

Go ahead and put the PLUGGED cat back on, the engine will absolutely have the exact same problems it had.

 

[BOSS]

The injector wire being loose is a very MINOR issue when compared to a completely plugged up cat. The truck was showing a lean condition on bank 2, but it was also down at least 150hp from what it should be, as it was running SLOWER at high rpm than a stock 5.3L did 100% because of that plugged cat. There have been guys that have actually destroyed their engines because of a plugged cat.

The injector harness having come loose had absolutely nothing to do with the problem that was causing the misfires and poor running that was encountered when I updated the tune, as everything was connected properly. I've driven 50 miles before with an injector that was losing connection and it does run rough, but absolutely nothing like was experienced.

There at Rickords, connections were wiggled and checked all over the engine, that is likely when the injector harness was bumped and it started to work itself loose.

Go ahead and put the PLUGGED cat back on, the engine will absolutely have the exact same problems it had.

I'm not disagreeing with that at all for the record. Those of you who have met JK in person know he's a very laid back guy. So, when Jeff removed his cats and drove down the street..the text I got was "HOLY SHIT!"

Even though the injector was an minor issue, I knew right there the cat was the major root of all evil

B

---------- Post added at 10:10 AM ---------- Previous post was at 10:04 AM ----------

The injector harness having come loose had absolutely nothing to do with the problem that was causing the misfires and poor running that was encountered when I updated the tune, as everything was connected properly. I've driven 50 miles before with an injector that was losing connection and it does run rough, but absolutely nothing like was experienced.

I thought you had said there were no misfires when we were out in FTW?

B

 

[JKmotorsports]

I know the loose injector harness happened later that day on my way home and wasn't causing issues earlier during the tune. Everything that was happening with the truck before and after was strictly from the clogged cats, just like Justin said. The loose injector problem that arose the same day just added another problem and threw BOSS and I off. The truck wasn't driveable from both the clogged cats and loose injector harness, so BOSS let me use his truck to drive back to Austin with while he diagnosed the p0200 and found the bad injector plug. After I drove back up to DFW and picked up my truck, I went through the p0300 diag tables again then removed the cats and took care of the problem.

 

[JKmotorsports]

I thought you had said there were no misfires when we were out in FTW?

B

The P0300 is a generic misfire code and doesn't necessarily mean there is a true misfire. It only means there is something causing the CKP sensor to detect a variation in the crank's rotational speed between cylinders, which can be caused by a lot of things, in this case, clogged cats.

 

[BOSS]

The P0300 is a generic misfire code and doesn't necessarily mean there is a true misfire. It only means there is something causing the CKP sensor to detect a variation in the crank's rotational speed between cylinders, which can be caused by a lot of things, in this case, clogged cats.

I wish we hadn't pulled that p0303 and p0354 to throw this whole thing off like it did....like you said, taking the cats out did no good in Dallas because of that shit. Annoying and

I for one learned a lot.

B

 

[Justin]

I know the loose injector harness happened later that day on my way home and wasn't causing issues earlier during the tune. Everything that was happening with the truck before and after was strictly from the clogged cats, just like Justin said. The loose injector problem that arose the same day just added another problem and threw BOSS and I off. The truck wasn't driveable from both the clogged cats and loose injector harness, so BOSS let me use his truck to drive back to Austin with while he diagnosed the p0200 and found the bad injector plug. After I drove back up to DFW and picked up my truck, I went through the p0300 diag tables again then removed the cats and took care of the problem.

I hope that it now has the power that you were expecting to see with it. I know that it has to run very well just based on personal experience with that exact system in multiple vehicles. Shoot, one of my customers ran an 11.72 in his reg cab long bed with that cam, LQ4, Long tubes and meth.

 

[COTahoeLS]

Justin-

You in town yet to bump my power up?

-E

 

[JKmotorsports]

I hope that it now has the power that you were expecting to see with it. I know that it has to run very well just based on personal experience with that exact system in multiple vehicles. Shoot, one of my customers ran an 11.72 in his reg cab long bed with that cam, LQ4, Long tubes and meth.

Definitely feels A LOT better to say the least. Thanks again for all your help Justin.

 

[COTahoeLS]

JK-

I'm wondering if the clogged cats could have been what led to the damage you discovered in your previous motor?

-E

 

[JKmotorsports]

JK-

I'm wondering if the clogged cats could have been what led to the damage you discovered in your previous motor?

-E

Wouldn't doubt it. Severely restricted exhaust and WOT boost would definitely have raised the combustion chamber temps pretty high and probably caused detonation.