Thread: Throwing codes

Originally Posted by traildog

Found this plug,



And this plug,



My feeling is, that this stuff wasn't needed after all the turbo stuff was added, but I'll need you experts to tell me...........

Pretty sure that first pic is the O2 sensor harness.

Second pic looks like the evap harness.

id have to agree with iceman on those two plugs.


lots of deleted plugs hanging around.

That O2 sensor being unplugged can cause LOTS of issues. I would get that hooked up and go from there .

its also deleted.

It's DELETED or just unplugged??

both it seems, lol its name is Halfassery lol he bought the car like this, been working out the bugs from the last owner.

Who de fuq deletes the upstream o2??? OP reinstall an o2.

ive seen pics of his o2 thats not plugged in, for the life of me i cant figure out what o2 it is thats unplugged. and its turbo, so things are set up differently like placement of the o2 would have to move right?

Idk but I think it's still in the DP

theres pics in another tread of his. the plumbing is all tight so its hard to tell where the pic is taken from lol

you need that upper o2. is there a pig tail off the o2? i cant see one.

and god thats all tight back there.

Originally Posted by traildog

I re gapped the plugs to .045 and it seemed to help the way it runs at idle, but, I still have misfires, mostly on cylinder 2.

I swapped coil packs to see if it moved and it did not. One thin i noticed is som green corrosion on the coil pack prongs. I tried wiping it off before I reinstalled them, but, I think I'm going to take them off again and clean them better.

try some fine sand paper. clean the icm too. where the coils sit.

funny part is all these codes popped up after the tune up he did.

that being said, make sure the plugs aren't cracked. if your socket dont have the foam insert they may have cracked on you.

Originally Posted by traildog

The o2 sensor in the pic does have a pigtail. here is another o2 sensor in the downpipe plugged in. Do I need 2?

Now you know why my hands hurt.........

that square plug up top back of the engine should reach the upper o2 . plug that back in.

Originally Posted by 231FUN

The only two codes I would be concerned with are the last two, I'd clear the codes and make sure that your Primary(Bank 1) O2 sensor in the upper downpipe behind the turbo is plugged in securely.
I'd clean up your coil teminals and get rid of the zzp wires also.
Does this car have an aftermarket cam installed Traildog? If so it could be responsible for the P0300 missfire code
My L67 runs and idles perfectly with the AL 103's gapped at .035, I ran AL 104's gapped at .035 before the cam and other mods previously and it ran and idled great then aswell...but hey every car is a little differnt
This car ain't halfassed, he just needs some help from folks who know about turbo setups.

Couldn't tell you about the cam. Is there a way to tell from the outside? And, you don't like the name "Halfassery?" I thought it fit well.......I'll get her fixed. Then I'll change the name......;')