can anybody figure this problem out please.
Thread Starter
Teching In
Joined: May 2011
Posts: 20
Likes: 0
From: maryland
can anybody figure this problem out please. i have a 2002 z28 stock car just purchased 3 days ago drove fine until now i noticed the pcv hose running to the intake was cracked and clogged with sometype of rubber cement by previous owner.i removed it and replaced the pcv valve and the portion of the hose wit just 3/8 fuel hose now i have no pcv valve. also i seafoamed the motor thru the intake by using the port where the pcv connects.after driving for a while clearing the carbon build up out i have 2 codes p0171 and p0174 which is fuel trim to lean bank 1 and bank 2.long story short which is more likely the problem pcv hose or o2 sensor.
please help this is my daily driver vehicle
please help this is my daily driver vehicle
i have heard bad things about running sea foam through the intake. some have good results and some don't. i would think you killed the o2's with the sea foam. and you should realy run the pcv valve.
Thread Starter
Teching In
Joined: May 2011
Posts: 20
Likes: 0
From: maryland
so i need a pcv well the hole hose cost 142.99 from the dealer i dont see any obvious vacum leak but definatly seem to hear 1 but failed to locate it so far....however i also heard some times seafoam can kill my o2s so i dont know which to replace first they cost the same.
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TECH Resident
Joined: Feb 2002
Posts: 843
Likes: 0
From: Roseville, Ca.
You can replace your entire system with fuel line, brass fittings and misc stuff you can buy from any auto parts store for around $20.00. First, search this site and educate yourself on how it works and how it's routed. Then replace that factory crap.
