Small update hoping moving in the right direction. Noticed 1 of the fuses was blown for o2 sensors. Replaced it and replaced the 2 back ones. Driverside bank 2 sensor had bare wires and broken wires. So I figured that could be the cause of the fuse blowing. Also now after changing those 2 sensors starting the truck it runs good for the first 10 to 15 seconds then falls back into the rough idle and p0300 pops again. Also all you smell now is raw fuel.
2008 tahoe 5.3l afm/dod delete issue
- Thread starter Nickct203
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Careful running it that way. It will kill the cats.
I haven't gotten a chance to go mess with it yet today, have to bring my daughter for her driving test. But my son has a innovate scanner that reads the cylinders in real time so I can see which ones aren't work right.
mikez71
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Sounds like it may need a tune.. Something about VE (volumetric efficiency) tables that need to be filled in maybe?
Just a guess, but something I keep seeing mentioned for MAF deletes...
Sorry I don't actually know anything about it..
Worst case you can reinstall the MAF and flash the stock program, not sure how good/bad it will run with your cam..
Just a guess, but something I keep seeing mentioned for MAF deletes...
EQ <> VE Version 3
http://209.218.144.226/Main.jpg I think Bluecat got busy, I have been waiting to put this up here til he said he was ok with it but haven't been able to reach him so here it is. So after many hundreds of hours here is a new version of the program with all the hooks into HP you could...
forum.hptuners.com
Quick guide to simultaneous VVE/MAF calibration for gen4+
I still see a lot of people using the old method of disabling the MAF to calibrate their VVE on 4th generation LS stuff, that generally being E38 controllers and up. This isn't necessary anymore because you can log those GMVE values in real time with HP Tuners. All you need to do is use the...
forum.hptuners.com
Sorry I don't actually know anything about it..
Worst case you can reinstall the MAF and flash the stock program, not sure how good/bad it will run with your cam..
tooleyondeck
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Ignoring the huge red flag that your buddy had the mechanical prowess to tackle an AFM delete & cam swap but didn't know it needed to be tuned afterwards, I would recommend going back over everything that was touched en route to pulling the cam and heads. Sensors, wires, harnesses, everything.
Once you're warm and fuzzy that nothing is broken or incorrectly installed, consider getting your original ECU tuned for the mods. Being that it is out of the vehicle already, there are a lot of options for mail-in or remote tuning. I'm more than confident Blackbear or another tuner can help you out. Best of luck and I hope you get it sorted out and back on the street.
Once you're warm and fuzzy that nothing is broken or incorrectly installed, consider getting your original ECU tuned for the mods. Being that it is out of the vehicle already, there are a lot of options for mail-in or remote tuning. I'm more than confident Blackbear or another tuner can help you out. Best of luck and I hope you get it sorted out and back on the street.
Thank you, I was actually going to go this route just for the sake of it. This is the entire reason I don't like anyone else touching my vehicles. Cause now I'm stuck with a widely tore open can of worms. Oo just found out also his boss was doing stuff with the scanner also after I had left the garage last Sunday, where the few things I did do and had it running with no codes and idling correct. All that was supposed to get done at that point was button everything up and tighten everything down. But low and behold not what happened. Going to start this afternoon with pulling the plugs to see what they look like again. Will update soon.
The scanner I borrowed from my son allowed me to disable each injector 1 by 1. Cylinder 1,3 and 2 made little to no difference when disabled. I pulled the plugs in those 3 and 1 and 3 were soaked. 2 wasn't as bad. So gonna swap coils to see if that helps those 3 and messes up the ones they were swapped with.
Ok so I swapped coils, cleaned plugs and still had the same issue with cylinders 1,2,3. Pretty sure my injectors on those cylinders are bad. Plugs were soaked in fuel. And disabling those injectors didn't matter to the engine running. They have power going to them as I can pulse them with the scanner. Any ideas before I continue and buy the new injectors
if you have one handy, you might do a compression check on those cyl before throwing money at it. Just incase
I've used this way to check an injector is working before. it did a good job of opening one up that wasn't spraying much. never tired it on one that is wetting cyl down thou.
depending on where you live, you might find a race shop that has an injector cleaner/tester and have them flowed for less than new injectors.
Dustin Jackson
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Strange problem to have multiple injectors fail at the same time. I would investigate what the injectors have in common like wiring or ground
Well couldn't find anything else to go with so said the hell with it and ripped the top back apart. Found this wonderful little guy all the way in the back on the driverside. Brand new freaking parts, just grenaded itself. Can't find the chunks that are missing. Hope there in the bottom of the oil pan.
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When I can get in touch with him I will ask. He's not answering his phone anymore.
strutaeng
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H O-Lee Chit Batman! That's horrendous and I'm sorry for your troubles. I hope things get sorted out soon.
I don't think that lifter failure can be blamed on the installer. I hope your friendship with this guy is not ruined.
I don't think that lifter failure can be blamed on the installer. I hope your friendship with this guy is not ruined.
No not blaming him for the lifter failure. Just in general of spending a grand on me without me even knowing what he was doing that's what pissed me off mostly
mikez71
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Still doesn't explain cylinder 1-3 being wet? Looks like that lifter turned 90 degrees at some point..
Have heard bad things about aftermarket lifter guides, might want to make sure you use factory parts there.
People often say they can do stuff...
Then I see two identical windows hung right next to each other, but one window is an inch higher than the other. WTF?
Haha, I told my friend not to use that friend of his because I'd seen his work before.
Not saying your friend is like that. I'm sure he was trying to help. All it takes is one screwup, pretty easy to do if not something you've done before.
But you pulled the head, you might as well go it alone this time. Hope you get her buttoned up again soon.
Thanks for sharing, and please keep us updated!
Definitely going it alone. It's not that I couldn't or didn't know what I was doing, I rebuilt this engine about a year, year and a half ago, just short on the time to get it done quickly. Thought by having him do it, it would of been done alot quicker and correctly all around. Bit not the case in form. The injectors look like they were used as birdies in a game of badminton. The hard plastic o-ring on top was broken off those 3 and the rubber o-rings look like they had the pick put through them. On top that the freaking gaskets under the intake manifold were not uniformed in sealing around the openings on the head so it was definitely leaking right it. I'll check and see if I took pictures of this as well. Just a shit kit in my opinion. Not like it was a cheap kit either, he spent a $1000 on this kit. But he did mess up cause the heads were way over torqued. Had to break out my 2ft breaker bar and still but some good amount of my 320lbs behind it to break them free.
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mikez71
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Huh, those look like the upgraded fel-pro gaskets. Was the intake manifold not tightened evenly?
Appreciate the updates!
Appreciate the updates!
Not sure if it was, I wasn't there when he did it. But I know they are definitely not fel pro gaskets. There whatever crap came in the kit he bought.
Well here's the cam. I need someone honest opinion if this looks like a new cam or a used cam. For it being brand new I feels like there to much wear on it already. You can definitely see where the lifter was torn up. But the rest of it just doesn't look right to me
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