Posted this in the hybrid section but maybe i could get help in here too.

Well, i let my friend drive my car and since he's new to stick he kinda stalled a couple times and whatnot, causing major vibrations when the car died. Also, when he was driving the CEL came on. I tried checking the code, but the CEL light doesnt blink, it just stays on. I treid to reset the ecu and pull the negative battery terminal, but still no luck. So, my car cuts fuel before vtec, any help will be apreciated. This also a h22 in a civic.

 

sounds like maybe some wiring got shook around. More specifically check wiring for your vtec solenoid and pressure sensor.

 

Well, checked the wiring and it looks fine. I'm not getting any codes or anything, so i dont know whats wrong.

 

why would you let him drive it in the first place

 

Take it to an Auto Shop.

 

do you have plenty of oil?

 

Yep, have plenty of oil, oil is up to top line. Still throwing no codes, but the CEL goes on when it cuts fuel.

 

what rpm is the fuel cutting off? is the fuel cutting off or is the rev limiter kicking in? There is difference between the two.

 

It's cutting off around 5k rpm.

 

is the fuel cutting off or is it hitting a rev limiter...i would guess that the fuel is cutting off...hummm...this is a good one! Have you check the solenoid to see if hasnt messed up? They can stop working and "freeze up". There was a post here while back telling how to check the solenoid, it is suppose to click all the time when the car is running...atleast i believe that is so.

 

Yea, i looked at the list about trouble shooting vtec. The only thing i have left to check is use another ecu, which vtec does work. I took apart the selenoid and checked the filter, everything looked fine.

 

dont forget about the oil pressure switch, if the switch is bad then the computer gets on signal. Oil pressure is what engages vtec. I could only think the solenoid is bad. Or the pressure switch. was your car already wired or did you run the wires?

 

I guess i could check the oil pressure sensor, but wouldn't the CEL go on if there were low pressure or if the sensor was malfunctioning?

 

did you heat up the engine before trying to go into VTEC?
i know sometimes i rip it but it doesn't go in VTEC because i was only driving for 2 blocks

 

Yea, im sure it was warm enough. When it is cold tho, it will not cut fuel at 5k rpm, and will let me hit red line(no vtec). When it is warm enough for vtec, it will cut fuel at 5k rpm and feel like it's hitting the rev limiter.


Modified by Cyberdx16 at 9:58 PM 4/12/2004

 

so which is it, cut fuel or rev limiter. 2 different things. Rev limiter will keep popping if you hit it, fuel will cut off and you will have one pop by the enigine if you reach fuel cut off.

 

Well, since its happening at 5k, its fuel cut. It pops once too. Once and a while it also pops/stutters when im just taking off normally.

 

I have this problem too. I was gonna make a post but saw this thread and didn't wanna make another thread bout same thing.

I was driving to a friend's house and my vtec was working fine. After an hour of driving normally, I decided to hit vtec. Well, my vtec ddin't hit. At one point, vtec hit at 5500 rpm. And now, my vtec is not engaging. On my VAFC 2. when I hit 5k rpm, the light turns red like i'm hittin vtec but I dont feel it.

Any idea's on my problem too????

 

Well in my case I hit fuel cut off at 5k, so i cant even get past 5k rpm in my car. You might want to check this thread out tho.
https://honda-tech.com/zerothread?id=164863