I probably need to replace my vtec pressure switch... I have a chiltons and I cant seem to find where it tells you to replace or how to replace the pressure switch. I was wondering if anyone could show me a diagram or tell me what page has the diagram to fix the pressure switch. My friend says it is next to my vtec solenoid valve, but I dont know where that is either... please give some input.

 

try cleaning your vtec solenoid first and see what happens.

 

What year car? That ALWAYS matters.

Usually the VTEC valve & switch are attached to the head, forward from the distributor. The pressure switch usually has a green electrical plug. The solenoid is usually on top with a single wire. Unbolt all of it & clean it. But have new gaskets since the old ones have probably become hard & brittle.

 

its a 95 accord ex, I have seen the green plug you are talking about but I would like a step by step process on how to remove it and clean it. I dont want to screw something else up on my engine.

 

For '95 that stuff is pictured in the middle, I'm not sure I understand exactly where it's located on the head...
The VTEC pressure switch is #13, it unscrews & has an O-ring, #21.
The VTEC solenoid has a gasket #12 under it's triangle flange.
The spool valve assembly bolts to the head, with a gasket #10. This gasket has a screen that gets dirty.
You should be able to just unbolt that stuff, clean it, & put it back with new gaskets.

 

ok that helps alot!! could you tell me where you got that diagram? if its from a book could you tell me which book, because it has more info than my chiltons... thanks