Hey Y'all,
This is my dad's truck. Stock except for k&n intake tube and 285/70r17 tires. I've never looked at a good running stock tune truck before and was wondering if his truck is running too lean or if this is normal for stock truck. All exhaust bolts are tight/not broken. No intake leaks. Fuel pressure is 58psi idle and 61-62psi at 3k. O2 look to be switching properly. Cleaned MAF and TB. Truck does have a intermittent P0446 code. Could be purge solenoid, charcoal canister, cracked evap hose, gas cap. Could that cause a lean condition? I know in Chrysler stuff, older stuff, evap issues would cause lean/rich issues depending on what pat of the evap system failed. The only other thing I have not checked are the cats. Probably run log the rear O2 to see if they are flowing properly. What ya'll think?
22-09-10 20-10-17.hpl