What would cause my 850 to be running much leaner under boost out of nowhere? Also I am idling at 1200 rpm now all the sudden...before I was boosting about 23 psi and my afr were a solid 12-12.4 now im seeing 14+ above 20psi. At about 17psi I see 11 on the wideband. volvo plugs now gapped at .025. so running leaner and higher rpms at idle only in park...Any ideas? gonna check fuel pressure soon
SOLVED: FPR vacuum hose popped off the vacuum tree. that could of been bad 