no vtec

Reply Subscribe

Thread Tools

Search this Thread

Feb 23, 2005 | 03:57 PM

blackeyes

Thread Starter

Senior Member

Joined: Jan 2005

Posts: 735

From:

no vtec

only when i first turn my car on in the morning i vtec does not change over but after it warms up it is fine. i dont have a knock sensor but can that be the problem?

Feb 23, 2005 | 05:24 PM

Blackhatch124

Joined: Sep 2004

Posts: 269

From:

RE: no vtec

until the car warms up you wont have VTEC its the same for everyone who has it

Feb 23, 2005 | 07:16 PM

blackeyes

Thread Starter

Senior Member

Joined: Jan 2005

Posts: 735

From:

RE: no vtec

just a question, thanks.

Feb 23, 2005 | 08:41 PM

sacicons

HCF Member

Joined: Jun 2004

Posts: 7,699

RE: no vtec

yeah, its a safety design. it wont use the changeover unless its warmed enough to go into open loop and use the info from the sensors. (i may have open/closed mixed up)

Feb 23, 2005 | 08:53 PM

sugerbear008

HCF Member

Joined: Feb 2005

Posts: 250

From:

RE: no vtec

i don't know if my vtec is working at all how do you tell when it is.

Feb 23, 2005 | 09:42 PM

XCM828

Joined: Dec 2004

Posts: 1,720

From:

RE: no vtec

The sound coming from the engine should change when it kicks in. It should become significantly louder on DOHC engines, but it's sometimes hard to tell on SOHC engines.

Feb 23, 2005 | 09:44 PM

sugerbear008

HCF Member

Joined: Feb 2005

Posts: 250

From:

RE: no vtec

i have the sohc so i guess i'll just play like i hear it or just hum.

Feb 23, 2005 | 09:47 PM

XCM828

Joined: Dec 2004

Posts: 1,720

From:

RE: no vtec

You can definetly hear it if you know what you are listening for. It should kick on between 5k and 6k rpm. The sound is kind of hard to explain. It sounds more.....oh, how do I put this.....mechanical?