hmm...try checkin ur exhaust sensor at ur exhaust manifold....
i encountered this before, my apexi pen timer a/f readings does not show....
n my FC suddenly bcame worst....
but engine check light no on....
ended up force my mech to change the exhaust sensor....
when my apexi pen timer a/f readings come back...
my FC also back to normal....
i encountered this before, my apexi pen timer a/f readings does not show....
n my FC suddenly bcame worst....
but engine check light no on....
ended up force my mech to change the exhaust sensor....
when my apexi pen timer a/f readings come back...
my FC also back to normal....