did u check ur engine oil level...
sometimes this could happen ...
o2 sensor very rare... since just bought..
my b18c until now runs no prob at all...... cheers
if as you says CEL still there and vtec open as normal most of the time was your O2 sensor
and you having sometime got power sometime not
you could check like this turn on your key CEL will off after 2-3 min the CEL come back again its will normally O2 sensor spoil
to confirm just plug in diagnostic machine/ hondata k-pro its could tell you everythings
Replacing them is like a 5 minute thing. Easy, but they are RM500 a pop! used! and theres 2! So if both need replacing, thats RM1000! And then theres no warranty/gurantee they'll last...
Mun lee doesn't have them. Last time when i called they quoted me RM200 each, and they said they had 6/7 in stock... i was like "OK, i'll take them all" ... sampai-sampai, they were Stream o2 sensors! Small, cannot use!
Just go to any mechanic who has a diagnostic tool. See what error codes come out. P1166 and P1167 are the error codes for the o2 sensors. For others error codes just google or some diag tools will even display what the error codes are all about...