Vtec Problems :,(

[NJ_STAMPEDE_LX]

So lately I have been traveling alot so of course I step on the gas alot more and open up VTEC more often. maybe about two weeks ago I stepped on the gas and it sort of felt as if VTEC was dropping in and out, almost as if it was lagging. I checked the ECU and its fine I swapped it out and it still does it. Any Ideas on where to start?!? help is MUCH appreciated, Thanks.

[91kid]

So lately I have been traveling alot so of course I step on the gas alot more and open up VTEC more often. maybe about two weeks ago I stepped on the gas and it sort of felt as if VTEC was dropping in and out, almost as if it was lagging. I checked the ECU and its fine I swapped it out and it still does it. Any Ideas on where to start?!? help is MUCH appreciated, Thanks.

Im guessing were talking H22 in a cb7 here..

So id check the wires going to vtec solenoid and the solenoid itself

[NJ_STAMPEDE_LX]

Sorry, I have a JDM H22A and it happens roughly from 5600-6000 where it drops, opens back up untill about 6400 and drops again untill 7,200ish again this is estimated.

[NJ_STAMPEDE_LX]

How often do the solenoids go bad?? lol I mean is there a high percentage that thats the problem? those were my assumptions

[WagonLX]

You might try testing and checking the wiring first. The solenoid wire should be green/yellow and go to pin A4 on ECU. The Pressure switch wire is blue and goes to pin D6, and the ground wire is black/Red. Since it is JDM, the pressure switch signal at pin D6 may be wired to pin A4. This will also activate VTEC. Check for loose connections. Also, if you do have the pressure switch, check your oil level, as this will affect engagement.

[NJ_STAMPEDE_LX]

Thanks alot, I'll try to do that tomorrow!, well today! lol

[olock13bt]

I have noticed that if your motor gets low on oil then it will do the same thing. You might want to check that just to be sure it's not a oil pressure problem, especially because you have been driving more and you have been going into Vtec more often.

After you are sure it has the right amount of oil I would start with the Vtec pressure switch like everyone else mentioned.

[PR CB7]

get $20 and go to honda, buy both vtec gaskets and strainer

they're probably dirty, creating the in-out if vtec, also you do a lot of driving
if with gaskets it doesnt work
try hooking up 12+v to the solenoid, while driving, if problem still resides
oil
sensor

[NJ_STAMPEDE_LX]

Thanks for all the help/suggestions fellahs lol it was just I need more oil, I gotta keep a better eye on that crap I suppose, it went through that oil very fast especially since I thought that synthetic shit is supposed to last longer lol I just did the oil change like 2 months ago

[deevergote]

Synthetic will find leaks faster.

Honestly, you should never burn or leak enough oil to affect the function of VTEC between oil changes. If your engine is leaking or burning that badly, you should repair it as soon as possible, and stay away from the VTEC range...