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If the vtec solniod was bad would it throw a check engine? And if not is there a way to test if the vtec is engaging while the car is still??? lmk
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I have no check engine and my vtec isnt engaging, check this thread, i figured my oil was to thin,
hope this helpedOriginally posted by LS/Vtec -
thanks bro, ill check it out...Originally posted by kurbs View PostI have no check engine and my vtec isnt engaging, check this thread, i figured my oil was to thin,
hope this helpedComment
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mine threw a check engine when it was unplugged so if its bad im assuming it would have a CEL on. theres ways to test it,Honda sucks. Over priced junk.Comment
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thats what im trying to figure out, how to test it... any ideas throw my way. It will be appreciative.Originally posted by kbrown! View PostComment
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My oil is at the right level (5w-30) All wiring is correct, no CEL. I took the solinoid off and there was a little bit of sludge in the port and a little around the screen, not alot. Not sure what my problem is, could the solinoid be bad or something...?Comment
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It tells you how to test it on the link i sent you
Testing the mechanics of VTEC
*You want to check are that you have the appropriate oil presure at head when approching the rpm vtec engauges. I have seen motors where their just wasn't enough oil press and it doesn't throw any CEL but vtec just doesn't work and you hit the 6500 rev limit. The way to check is take the 10mm bolt out of the head that is on the front left if you are facing the motor. This bolt gives you access to the oil way of vtec, this is the same bolt that you remove to do the air presure test listed below. But anway you need to get a gauge that screws into the oil port. Now from here you have two choices. once you have the gauge installed you can either raise the car up and run the car in gear in order to simulate the speed so the vtec solinoid will open and then measure the presure OR you can disconnect the 1 pin connector from the vtec solinoid and aply batery voltage tot he solinoid in order to open it so oil can/should flow into the vtec oil gallerys. The test has to have the motor reving at least up to if not beyond 5000rpm in order to get an accurate oil reading. now what ever way you shose to get the solinoid to open with the car runing is up to you but at 5000rpm you should read a minimum of 60 psi of press at that port. if you do end up having enough oil press i would investigate a bad vtec oil presure sensor. Also not having enough oil presure can also account for "Late" engaugement, where you reach the apropriate press after the preset engaugement point and then the ecu alows vtec to engauge because the required oil presure has been met.
*Secondly you want to make sure that your solinoid is opperational, take it off and using a 12 volt source and a ground make sure that the solinoid operates quickly and smoothly when 12v is applied. this is the valve and if it isn't working vtec won't either
*Third if all else fails you can check that vtec mechanics work by using air presure(this test should then be followed up by the oil presure test) Take off the valve cover, take the plug out of the front of the head next to the header, either find a fitting that you can adapt your air hose to screw in the head or get a blow gun with a rubber tip. with another person you have to block the bleed hole on the 5th cam cap and while applying 40-60 spi of air presure , slowly crank over the motor using the main crank pully and watch to see that all 3 rockers lock togther and start to follow the middle lob, the VTEC lob. you may even hear a tiny click as the pins in the rockers lock the 3 togther. also you will be able to tell that the vtec lobe is being followed as the lift or how far the valves are pushed down is much greater. with the appropriate air presure and if everything is workign corectly every valve should be following the vtec lob. make sure that you have a good air compresor that can keep up with keeping a presure of 40-60 psi. if you don't have luck try raising the presure a littlbe bit, but i wouldn't go much hiogher than 80 psiOriginally posted by LS/VtecComment
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