Thread: rough idle still

the fat hose off the TB is like a 1/2 inch round, it loops over the TB to the back of the engine to the evap solenoid. they sell fat vac line, for it, then you push a smaller line inside the fat line then back onto the factory hard plastic line.


what year is your car? did you delete the rear o2 with the cat delete? did this all start with the cat delete? or soon after it?

you have the code it had still? or did you clear it and its of still?

what did you do with the rear o2? is it still there?

Have you looked underneath the supercharger, under the snout to make sure you haven blown off the vacuum tee from the LIM ?

Originally Posted by ssiebor14

Rear o2 is still there along with the vacc tee under the snout and I cleared the code it cane back then went off on it's or . Hasn't came back since.

What are you fuel trims at idle? Put a fuel gauge on there so see fuel pressure. Also your fuel pump resistor could be on its way out (if so try the relay trick if it wont start back up)

My GS ran the balls but at idle randomly it would sputter and die along with hard starts. Put a pump in it and so far so good.