My 04 V8 with 175000Mi on it, started idling really uneven, multiple misfires on all cilinders.
O2 sensor upstream bank 1 was bad. I replaced all four O2 sensors.
Still get "System too lean" on both banks.
(I also know my catalytic converters are shot)
In the egine bay, there is a loud sucking sound coming from the little disc located on top and back side of the intake manifold, more to the driver's side. When I put my hand over its opening, (preventing air entrainment) then the idling improves.
Any ideas?
O2 sensor upstream bank 1 was bad. I replaced all four O2 sensors.
Still get "System too lean" on both banks.
(I also know my catalytic converters are shot)
In the egine bay, there is a loud sucking sound coming from the little disc located on top and back side of the intake manifold, more to the driver's side. When I put my hand over its opening, (preventing air entrainment) then the idling improves.
Any ideas?
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