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Originally posted by blundar@Jul 14 2003, 05:04 PM
I'm sorry, but I'm going to have to disagree with the majority opinion here.
VAFCs have no input for a vtec pressure switch.
VAFCs have a single wire output for vtec that goes directly to the solenoid.
VAFCs make no use whatsoever of the circuitry in the ECU to activate vtec.
I know this certainly because most of the cars I / my shop work on are OBD0 cars, which are all non-vtec if they were made in the US. In the past month I've seen a D16Z6 90 hatch, LS/vtec 92 teg and a mini-me powered CRX run very well with a VAFC activating vtec. None of these three cars had VTEC ecus. None of these 3 cars had a vtec pressure switch involved.
Bottom line: if you are POSITIVE that vtec is not engaging (how do you know for sure???) then the solution is to check the wiring on the VAFC. I'd bet $20 that is what the problem is. Just because a shop did it doesn't mean they did it right.