OK, 93 Civic EX throws CEL code 22 (VTEC pressure switch) at high RPMs after VTEC kicks in. Causes/solutions?

sounds like not enough oil pressure. Check your sending unit on the back of your block.

Thats what i thought. So the sending unit, as in it could be clogged?

it could be clogged, or one thing I have read about is that a gasket in it coming loose and leaking. I think that was for a Jeep or something like that, but samething could happen.

Not too familiar with exactly what goes wrong with these things, just that a lot of vehicles with oil pressure problems, replacing the sending unit cures it.

Ok so where is it exactly, i cant find anything on it in my haynes manual

back of the block sort of near the oil filter. I wanna say to the left and a little below the filter but I can't remember for sure.
should look something like this

http://www.international-auto.com/index.cfm?fa=p&pid=2544

OK thanks alot, ill have at it tomorrow and see what i can come up with, if it is cloged, can it be unclogged, or should i just buy a new one?

I found a better diagram and description of the part to replace,http://www.honda.co.uk/owner/civicManual/pdf/8-3.pdf

make sure its present and still on there tight, if its faulty replace it. never touched it myself

hook up a mechanical oil pressure gauge from your local auto shop to the oil pressure test port on the seloniod. warm engine to operating temp.hold the engine at 1000, 3000, 5000 rpms for a minute. your readings should be 7 psi or less on all speeds.

or take it to a honda experienced tech to diagnose for you.

or do it your self

http://www.automotiveforums.com/vbulletin/showthread.php?t=330510

Ok so if that psi isnt in that range that the sending unit is clogged/bad?