06-04-2008, 01:27 PM
Join Date: Jan 2005
Location: Clarksville, TN
What I Drive: 2004 Silver SVTF EAP, PW S/C
FF Reputation: 1
Buy-Sell-Trade Rating: (0
Oil separator question
I dont know what forum this should be in but I'll try here. I've been chasing lean codes from my PW install for a while, I first found my EGR block off plate bold snapped although the head had not fallen off, I later discovered 2/3 burnt through front O2 sensor harness. I'd been having VSS issues that I though may be feeding into the PCM loop and causing incorrect readings giving me codes. I fixed the first two months ago, months apart, and the VSS this past weekend. I have no drivability issues or idle issues.
I've been getting intermittent codes of P0171 which I've thoroughly searched. I believe with this code the (if it is a vac leak) vac leak is most probable between MAF and TB. While looking between the two I noticed my PCV tube. I installed the CFM separator a couple weeks ago and while inspecting everything I noticed the filter/canister looked like new. Is there some simple mistake I made with the install that could be causing a vac leak. My two questions would specifically be how tight to I tighten the plastic screws into the side, mine move kind of easy but was afraid to do another complete rotation and strip them. The other is could the valve at the bottom(?) be open? Which way would I turn it to check and what specific part to I turn.
A couple months ago on one occasion I also got I think P0455 large evap leak, this may be my whole problem. With my generic scanner plugged in last night while driving I got one pending code (first) of P0171 and one pending code of this P0455 they flashed as pending on one occasion each then were gone when it scanned again then disapeared when it re-scanned. I'll probably be replacing the canister at the firewall as I think it would be a cheaper try than the 'fume' test at our dealership that I dont trust.
Sorry for my long questions as I am a novice and dont have anywhere around here to take my car for tune and I really have searched...