ok im in a mess here vtec is not kicking in i can not find the problem with the wireing!!! im still going to try to fix it but i was just wondering is it possible to wire vtec to a switch and turn it on and off as pleased? call me stupid but i was just wondering?

 

Not a stupid ?... Yes you can wire it through a switch, make sure that you fix ur wiring though, because if you leave it on a switch too long it will burn your solenoid up, because your going to be sending 12 volts to it instead of the 7 volts that it is supposed to have.

 

No. The solenoid will function if you wire it up to a switch. Fuel and timing maps wont change though so it wont really do anything.

 

yea it'll come on when he flips the switch, it just doesn't work better than coming in from the ecu.. just if he keeps it on the switch it will burn it up because of the voltage going to it, I've had to do mine like that a few times, because of the oil pressure switch breaking off.

 

off topic but do you think turning the vtec engagement down via apex'i vafc will burn up the selenoid thus causing it to run rich??? lol

 

no, it wouldn't burn the solenoid up, but if you turn the engagement down too much, when it was to come in the car might not pull like it should in vtec, i'd say turn it down to maybe around 4600 rpms or so.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iamthefollower &raquo;</TD></TR><TR><TD CLASS="quote">yea it'll come on when he flips the switch</TD></TR></TABLE>

Technically it doesn't really work. All the vtec solenoid does is engage the high lift solenoid, But the ignition timing and fuel maps are controlled by the ECU. If anything you should be loosing power running the vtec solenoid off a switch.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94EG8 &raquo;</TD></TR><TR><TD CLASS="quote">
But the ignition timing and fuel maps are controlled by the ECU. If anything you should be loosing power running the vtec solenoid off a switch.</TD></TR></TABLE>

Yes that is true, but if he is wanting to use it for racing and such, then when you flip it before you get in ur normal rpms where vtec is suppose to come in u lose power, but if you flip it when ur vtec normally engages it will come in and work, just won't have the correct fuel maps and such as you are saying, I am just letting him know that he can do it and it does work, just doesn't work properly.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iamthefollower &raquo;</TD></TR><TR><TD CLASS="quote">no, it wouldn't burn the solenoid up, but if you turn the engagement down too much, when it was to come in the car might not pull like it should in vtec, i'd say turn it down to maybe around 4600 rpms or so. </TD></TR></TABLE>

im pretty sure thats what it was at...but i gotta problem with my z6. here is a link. lol see if you can help.

https://honda-tech.com/zerothread/2413950

this explains why im askin this question

 

search youtube for vtec button. there is a guy who does it and it works.

 

Mother of God for the trouble you're going to go through to wire up a retarded VTEC switch why not just get the correct ECU (if you don't already have it) and wire up the VTEC like it should be?

For a SOHC it's TWO FREAKING WIRES!!!

<FONT COLOR="red">A4 and D3</FONT>



...and if you want to make it look facory you can reference this:



I will not sit here and read people discussing such a horrible idea. 94EG8 is the only one talking sense here when he says it won't make much difference. VTEC isn't just some sound the engine makes (or on a SOHC doesn't mnake lol) - it's worthless to engage the VTEC lobes on the cam without the mathing amount of fuel and timing from the ECU.



Yes I'm being an *** because it's so retarded to wire up a switch, make a freaking spot for it, and then have to switch the crap on while driving.

 

BTW to the OP why don't you give us some information so we can help you actually fix the problem the RIGHT way?

What year/make/model is the car?

What engine? Stock?

Did the VTEC work before and suddenly stop?

Do you have a check engine light?

Hell the most common reason for VTEc to stop working is low engine oil level. Most of the time it will throw a VTEC pressure code because there's not enough oil pressure to engage the VTEC.

 

[QUOTE=B18C5-EH2]why not just get the correct ECU (if you don't already have it) and wire up the VTEC like it should be?
For a SOHC it's TWO FREAKING WIRES!!![QUOTE]

He said that there was something wrong with his wiring at the moment and he was just wanting a quick fix for the vtec till he fixed his problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iamthefollower &raquo;</TD></TR><TR><TD CLASS="quote">He said that there was something wrong with his wiring at the moment and he was just wanting a quick fix for the vtec till he fixed his problem.</TD></TR></TABLE>

So basically let's try and help him screw it up even more by not only ignoring the actual problem, but also ghetto rigging a toggle switch to be activated whilst driving? Sorry man no offence to anyone but that is not what I call "help."

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">

So basically let's try and help him screw it up even more by not only ignoring the actual problem, but also ghetto rigging a toggle switch to be activated whilst driving? Sorry man no offence to anyone but that is not what I call "help."</TD></TR></TABLE>

Hey, I told him if he left it on the switch too long it will burn up the solenoid, now he asked a ? as to if you could do it. I gave him the answer he was looking for which was YES you can put it on a switch. He said he is going to fix his wiring and everything so I was just letting him know that yes he can do it for now. And yes you can feel the Vtec come in when you flip the switch in rpms, it's just NOT better doing it this way than having it all coming from the ECU.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">So basically let's try and help him screw it up even more by not only ignoring the actual problem, but also ghetto rigging a toggle switch to be activated whilst driving? Sorry man no offence to anyone but that is not what I call "help."</TD></TR></TABLE>

Could not agree more. Its been my expirence that its far easier to do something right the first time than it is to hack something together.

 

Yeah, it would be best for him to go ahead and fix his wiring, but he asked if he could do it, I just told him the answer that he asked for.

 

Okay so let's apply your principle to something else:

"Can I put brake fluid in my engine?"

What would you say to that?

How about:

"Can I heat my stock springs up enough to lower my car? Exactly how do I do it?"

The answer to both questions is "yes" but why tell them how to do it?

I'm not going to take part in nor endorse telling someone how to screw his car up worse than it already is. I'm not attacking you at all man. I'm just saying that sure you can wire up VTEC, but telling someone he can and telling him how still doesn't help him one bit.

 

I never told him how to.

 

ha wow i made this forum up a long time ago and just came back to it guys i am older and wiser now and do not worry i did not go with a switch i found my problem and moved on so to sum this all up! DONT PUT YOUR VTEC ON A SWITCH ITS JUST STUPID!!!

 

lol 2 years made a huge difference. Think back to the time when you made this thread
and just think about how young an stupid you were, grandpa.

 

Just perusing...I'll answer some questions.

1. VAFCs are CRAP. Yes you're car will run rich like crap if you lower the engagement point.
2. Yes you can wire up the solenoid to the battery? But why? That's stupid. Run the solenoid to the correct pin on the ecu, run the positive from the pressure switch to the correct pin, and run the ground on the pressure switch to the closest bolt on the motor.

It's that simple.

 

Hi guy i have a 90 integra with jdm b16a obd0 ecu
My check engine get on over 4000 rpms and im getting code 23 (knock sensor) but i.replace cuz was broke and i check the knock sensor wire and its good so my vtec not working
Someone tell me toreplace ecu
Other's tell me make the wire obd1
And a guy tell me to run a wire from solenoid to battery
What i can do ?

 

You can create your own thread in the proper section (not civic obviously) instead of bumping a 6 year old thread.

Good luck.