ive got 02 liberty 3.7 with consistent 9" vacuum(no load)didnt think EGR was used anymore(last 1-2 decades),if EGR equipped can anybody help with location.both S2 O2's pinned at 1v but only bank 1 MIL.
isnt vacuum leak,maintains 9" through entire rpm range(no load).pulled vacuum line while running to close IAC and pressurized intake to locate to atmosphere(nothing)but heard leak internally,do 3.7's have reputation of burning valves?both downstream o2's buried at 1v but only bank 1 sets...
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