Ive been trying to figure this out for bout a week now and still no luck I keep getting ps0172 and ps0175. Today I decided to check and see what my 02s were doing at idle they both were at about 700 mvlts but inermittenly they would jump down to 60mvlts I dont know if this is the computer trying to compensate for being rich or what, what should be normal for my truck?

Here is some things ive checked so far I changed the plugs I had ngk tr5 went to tr6 the plugs didnt look bad they look normal I havent driven the truck much with the rich condition so maybe they didnt have time to go bad.

I changed the oil wich didnt smell like fuel

I cleaned the maf and tried a spare one I have laying around

I sprayed carb cleaner around the intake joints didnt notice a significant change in idle kinda hard to tell with the cam which i think im gona do agian with a buddy looking at the rpms on the scanner

I put fuel system cleaner in the tank

I pulled off the outlet elbow from the supercharger there was a little oil stream pooling on the bottom not a whole lot I dont have a catch can so I take it this is prolly normal I also felt around inside the intake and it wasnt soaked with fuel from the vaccum regulator or oil

All of these changes I disconnected the battery to reset the pcm

The weather has changed around here the truck started this on our first 90 degree day the light came on right away since then its been pretty hot and humid dont know if this has anything to do with it.

 

If you want,send me a log and I will look at it for ya.
Charlie@gowheatley.com

 

Damn thats what its about..
John

 

Me too,

 

Well figured it out today when I instaled the SC kit I had to route custom PCV lines ones of them has to make a 90 degree bend the hose held its shape when it was new but with the hot weather it softened up and pinched shut I installed a 90 degree plastic elbow and all is good so far.

Thanks for you offer Charlie, if I lived closer to Texas you would definatley be doing my tuning your prices are almost half what I pay for a dyno tune

 

no problem anytime buddy