P0420 Again

[BNaylor]

Whoever designed it was probably high.

The setup on your Jeep is standard and old school design but effective. Ours are classified as an "integral PCV". For example the L36 NA SII 3800 is similar to the L67 except the PCV is mounted in the plastic UIM plenum versus the supercharger. The port that feeds up to the PCV originates at the lower intake manifold and front bank cylinder head.

However, the GM 60 degree V6 engines like the 3100 and 3400 use the same setup as your Jeep. PCV mounted in one of the valve covers and intakes to the throttle body or upper intake manifold. I like this setup better since it is easier to service or troubleshoot.

[richtazz]

With all the GTP advice Bob has given, that +1 would put him at about infinity +1, . Bob knows his GTP's, anyone that doubts that will be eating humble pie if they want to argue!

[BNaylor]

Originally Posted by richtazz

With all the GTP advice Bob has given, that +1 would put him at about infinity +1, . Bob knows his GTP's, anyone that doubts that will be eating humble pie if they want to argue!

I'm humbled. Thanks for the kudos Rich. Plus don't forget you are our parts expert and an excellent valuable member of our Moderating and technical advice team.

BTW - Check your PMs.

[00GTP4ME]

Originally Posted by richtazz

With all the GTP advice Bob has given, that +1 would put him at about infinity +1, . Bob knows his GTP's, anyone that doubts that will be eating humble pie if they want to argue!

Amen to that. You guys have been an invaluable resource over the past couple years and I'm extremely grateful to you for your time, experience, and help.

[tblake]

Originally Posted by 00gtp4me

amen to that. You guys have been an invaluable resource over the past couple years and i'm extremely grateful to you for your time, experience, and help.

x2

[00GTP4ME]

Originally Posted by tblake

x2

BTW Tim, you can have +1 GTP point too because I think you fixed my transmission.

[tblake]

I did? I'm not really a trans guy. I hate tearing them apart, especially the 4t65e's and 4t60e's with all their little components all over the place. I'd way rather replace than rebuild.

But no more shudder? I thought it went away after you unhooked the battery and came back with a vengance....

[grandprixgtx00]

Originally Posted by tblake

I thought it went away after you unhooked the battery and came back with a vengance....

no, its was that "warm" air intake he had on his car

just kidding Matt

[00GTP4ME]

Originally Posted by tblake

But no more shudder? I thought it went away after you unhooked the battery and came back with a vengance....

It came back that once on my way to school, but that was pretty much it. Every once in a great while it will hiccup a little, but there's a drastic improvement since you had me disconnect the battery. I'd say it acts normal 95%-98% of the time now. As far as I'm concerned it's fixed.

Originally Posted by grandprixgtx00

just kidding Matt

Laugh it up giggles.

[danielsatur]

Due a Down stream 02 simulators, see www.bigdaddiesgarage.com , or www.o2simulator.com

[00GTP4ME]

Originally Posted by BNaylor

Have you ever replaced the PCV valve? Check the condition of it and the o-ring seal to start. And check the vacuum lines at the MAP sensor and off the supercharger and throttle body.

Guess what? I was working on the cars Saturday and found a crack in a vacuum line. I think Bob snuck up and put a slit in it so that he could say, "told ya so."

I took a pic of what the hose connected to but will have to post it later once it gets sent from my phone.

[00GTP4ME]

Ok, here's the pic. You can't see the leak in this pic, but I took a picture of where the leaky hose plugged in. I highlighted it in red...
Does anyone know what that is or what it's going to? (sorry for the crappy phone pic)...