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everything is wired correctly and i had vtec for about 2 months and now it doesnt kick in and the only change i made was putting in gsr cams. any ideas tach works speedo works and everything else that needs to work for vtec
Do you have a check engine light on? If not hook a test light up to the wire going to the vtec solenoid, drive the car past the point where vtec normally engages. Did the test light come on? If it did pull the vtec solenoid and inspect it, clean it out etc... try the same test again. Also you can bring the RPMs up in the driveway and use a wire to jump from the positive post on the battery to the vtec solenoid, does the engine engage vtec?
honestly i dont think that has anything to do with vtec.
i could be wrong tho.
Actually vtec doesn't kick in until the engine is at normal operating temp so if your coolant sensor isn't working then the ecu will probably beleive the car is constantly running cold and not at normal operating temp. Trust me my friends crx with a b16 had this problem. His temp guage read cold all the time and his vtec wasn't working and he replaced the coolant sensor and car started to run at normal temps and vtec was working again.
And Vtec doesn't kick in when the car is in neutral so how would him revving in the driveway help??