Recent content by 2009TahoeLT

  1. 2

    Chasing a rough idle?

    Replaced the bank 2 upstream o2 today. No change. Cats are not clogged. Still misfiring on every cylinder over 1100 rpm and a rough idle. Did another smoke test, only thing I found leaking was the dipstick tube lol. Any other ideas??
  2. 2

    Chasing a rough idle?

    I had thought about that but I bought them from rockauto. Not that they might not have counterfeit stuff come through but I’ve been very happy with parts through them lol
  3. 2

    Chasing a rough idle?

    Ok so also found the fscm fuse had a weird like burned grease film on it. Looks like previous owner put some sort of grease in it and it didn’t like it lol. Replaced the fuse and started her up. Check engine light immediately went away. Unfortunately still idles rough but is idling at about...
  4. 2

    Chasing a rough idle?

    So small update. Here are the compression numbers. Now throwing codes for cylinder 5 misfire and also a p0300, bank 1 lean, oil pressure and a large evap leak. Motor bogs down bad when coming to a slow stop. When it misfires bad the engine light flashes and traction control turns off and...
  5. 2

    Chasing a rough idle?

    Yeah I had a huge vacuum leak and found the line to the charcoal canister was loose. Pushed it on tighter and smoke tested the system again. No visible smoke leaks and tank pressure was holding steady with vent valve closed. Intake manifold gasket is definitely in there. I installed the newer...
  6. 2

    Chasing a rough idle?

    Also plugs are white which usually means it’s running lean correct? But then trims show its adding fuel. So I’m lost haha
  7. 2

    Chasing a rough idle?

    My buddy recommended copper as they are better but just have to switch them out more frequently
  8. 2

    Chasing a rough idle?

    Y pipe is completely rusted. Bolts will snap without a doubt
  9. 2

    Chasing a rough idle?

    Yeah it doesn’t throw codes but it’s adding fuel and misfiring on every cylinder but cylinder 6, but only at 1100-1600rpm. I may try and see if my buddy has a compression tester to take a look.
  10. 2

    Chasing a rough idle?

    Copper ac delco plugs, ac delco wires. Gap was confirmed before install. I’m not 100 percent sure on injector connectors tbh but could be switched somewhere. I don’t believe so though. Plug wires go where needed. Booster hose is connected. No leak with new intake gasket. Also all new intake...
  11. 2

    Chasing a rough idle?

    Found another evap leak at the charcoal canister. Fixed that. No changes. O2 sensor readings look ok. Still adding fuel and misfiring. All cylinders misfire at 1100 rpm except for cylinder 6
  12. 2

    Chasing a rough idle?

    Anything else I can do or check in the meantime?
  13. 2

    Chasing a rough idle?

    O2 sensor is stuck on there pretty good. And it’s getting ALOT colder here. Might have to wait till a decent day to do it.
  14. 2

    Chasing a rough idle?

    Found this online I can pickup tomorrow. Looks like it has the o2 adapter. If this won’t work I’ll have to order off Amazon
  15. 2

    Chasing a rough idle?

    Also I noticed earlier when revving it to the 1100-1600rpm range to check misfires. I was getting some popping sounds from the exhaust, backfiring.
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