cb7 idle prob? & Vtec question

[Low And Slow]

okay well i got my cb7 idling real funny it has a 96 accord swap the previous owner i think did it so idk whats wrong with it

and my vtec question is if my vtec is not working how much HP am i loosing
because once again previous owner had the 96 vtec motor swaped and vtec doesnot work so just wondering if any one can help

[Djmoua]

Is the Idle just very low or going up and down?

I'm not sure about the Vtec not working...MAYBE it could be because it's not running with the right ECU . But don't qoute me on that.

[Low And Slow]

it actually idles up and down byhapps do you know the engine code for the 96 motor cause i forgot is it the f22?

[Low And Slow]

i was also thinking that, about the ecu, so is there anything i can do if it is the ecu

[deevergote]

Read the sticky threads posted above this one for information regarding the idle issue. There are also far more detailed threads made by HondaFan81 elsewhere.

As for VTEC, there could be a number of reasons why it's not working. The ECU needed would be an OBD1 P0A from a 94-95 EX. If your motor is a 96, then it was OBD2, and the previous owner would have had to convert it to OBD1 (or do some other halfass way of trying to convert the car to OBD2... which could be a mess...)

You probably aren't losing much power. The VTEC system in the F22B1 isn't performance oriented in any way. It's really just for fuel economy, and used as a gimmick to sell cars. It's very different from the VTEC systems in the DOHC performance oriented engines like the H22.


Figure out what ECU you have. Check to see if your Check Engine light is on... if so, VTEC usually won't engage, and the car will potentially be in "limp mode"

[Low And Slow]

well we just disconnected the iac and idleing problem stopped so soon im gunna replace it soon and the vtec think ima try to find the ecu prob later since the car is running perfect now

[deevergote]

I'd check the ECU ASAP... if it's the wrong ECU, you could be doing damage. Not likely... but not worth the risk. The ECU is extremely easy to access.

[wed3k]

well we just disconnected the iac and idleing problem stopped so soon im gunna replace it soon and the vtec think ima try to find the ecu prob later since the car is running perfect now

instead of throwing parts at it, try cleaning it and see if it helps any. your idle could be too high and unplugging the iacv might have just lowered it.

as for hp...you'd lose maybe 10-15hp. you'll just have an A1 f22.