you know i bet thats what it is, i replaced the o2 sensor last night and was cleaning the injectors when i noticed an unusal sucking sound. so i bet thats what it is. and ive seen the light come on once, doesnt come on anymore.

 

what abouta fuel pressure regulator? do you have a 1-wire or 3-wire heated O2 sensor?

 

its a one wire o2 sensor, and after replacing the tbi gasket at the manifold, i notice no change in sound. the sucking sound is coming from the throttle body itself. i cant think of anything other then the injectors themselves or an internal problem in the throttle body.

 

popped a new fuel filter in and noticed quite a bit of improvement. but not to where it should be. must be fuel delivery.

 

Good luck with that man.Problems like thatare a pain in the butt.

 

seems to be where it should be after cleaning the injectors again.