HELP!BBK Intake install on 02 WS6. Car acting up!

[vedder069]

So I swapped my intake manifold on my 2002 ws6 yesterday. And now my car is acting all sorts of crazy and my service engine soon light is on. I swapped stock for bbk. Now it's idle is acting weird. Sometimes when I put it in neutral at stop signs it will idle up some. Then come back down. And sometimes it's almost like my cruise control is on. I ran the codes at Auto Zone and it said bank 1 and 2 were both running lean. And it said Random/multiple misfires detected. Needles to say I am shitting myself. My car is my baby and I am sure it was probably put in wrong or just needs tuned. Hopefully just tuned. Please freaking help me.

[DIRTY JERZY]

Sounds Like Its Leaking

[CamaroFan71]

Sounds Like Its Leaking

x2

Spray some carb cleaner around the intake to see if the idle changes.

[vedder069]

Is there a way I can tell if it is leaking? And I will definitely try the carb cleaner. Thank you! I reset the codes and drove around awhile. It only read lean this time. No missfiring detected. Is running lean a common problem when you swap out intakes?

[mark21742]

sounds like you definately have a vacum leak. if you hit the leak with the carb cleaner your idle will almost imediately drop and smooth out. check your intake bolt torque, and make sure there are no opened vacume ports, torn or loose vacume lines...good luck man I hope you get her running right

[vedder069]

I found a vaccum hose to the left of the intake that was undone. I connected it and it's acting normal again but a little bit of a low idle. Which is tripping the service engine soon light. I am waiting for it to cool off and go back and check the hoses again. Hopefully that was the only leak.

[mark21742]

glad to hear you found one! if the only problem is your idle being a tad low, just try adjusting the idle set screw, that should do it for you. I haven't really looked at mine, or any on an ls1, but i think it should be an allen head... I hope I helped