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How to check if VTEC is working?

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Old 07-27-2010, 08:48 AM
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Default How to check if VTEC is working?

Hey guys, ive been around here for a couple years. Many of you know I have a built D16 on boost. For a while now it just doesn't feel like it pulls the way it used to. And the other day I was trying to listen for VTEC by holding the revs around where VTEC engaged but I couldn't hear anything and my car feels like it loses power after around 6k. Is there any way I can test to see if VTEC is working? Because I tried unplugging the solenoid and it just throws a CEL instantly ( I was going to see if it threw a CEL when VTEC was supposed to hit).
Are there any specific pins that I can tap that are supposed to throw Voltage when VTEC is supposed to engage? Because this is been bothering me for a while now :/
Old 07-27-2010, 08:50 AM
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Default Re: How to check if VTEC is working?

Well, it should go MMMBBWAAAGGHHHHHHHHHHH!!!!!!
Idk how to help.
Old 07-27-2010, 09:39 AM
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Default Re: How to check if VTEC is working?

Originally Posted by singlecamslamed
Well, it should go MMMBBWAAAGGHHHHHHHHHHH!!!!!!
Idk how to help.
rofl my built turbo setup doesnt ever sound like that
Old 07-27-2010, 10:16 AM
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Default Re: How to check if VTEC is working?

You can test to test if the solenoid wire is getting a 12 volt signal at the time of activation. That would tell you if the ECU is at least sending signal. After, that pull off the solenoid and clean the internal passages. -Later, BR
Old 07-27-2010, 10:38 AM
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Default Re: How to check if VTEC is working?

Originally Posted by singlecamslamed
Well, it should go MMMBBWAAAGGHHHHHHHHHHH!!!!!!
Idk how to help.
LM F$%king AO

OP wat ecu program are u using?
Old 07-27-2010, 10:42 AM
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Default Re: How to check if VTEC is working?

Originally Posted by BrandonR
You can test to test if the solenoid wire is getting a 12 volt signal at the time of activation. That would tell you if the ECU is at least sending signal. After, that pull off the solenoid and clean the internal passages. -Later, BR
how would I do that? I guess I'd have to find the pin inside the car and tap it with a multimeter? And then have someone hold it in there to make sure its connected?

I'm using eCtune btw
Old 07-27-2010, 10:47 AM
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Default Re: How to check if VTEC is working?

Originally Posted by Jimster480
how would I do that? I guess I'd have to find the pin inside the car and tap it with a multimeter? And then have someone hold it in there to make sure its connected?

I'm using eCtune btw
whats the a/f ratio when the hi cam engages and at what rpm is your vtec set at
Old 07-27-2010, 10:49 AM
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Default Re: How to check if VTEC is working?

Originally Posted by $kreech
whats the a/f ratio when the hi cam engages and at what rpm is your vtec set at
I dont have a wideband. I didn't waste money on one. It was tuned on the dyno on a wideband, and it has a lean cut on the ignition and a boost limiter cut incase the wastegate fails so the car doesn't overboost.
Old 07-27-2010, 10:50 AM
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Default Re: How to check if VTEC is working?

Originally Posted by Jimster480
how would I do that? I guess I'd have to find the pin inside the car and tap it with a multimeter? And then have someone hold it in there to make sure its connected?

I'm using eCtune btw
get a single wire run outside to tap into the vtec solenoid and hook it to a bulb with the other connector to ground, the bulb should light to let u know if the solenoid engages
Old 07-27-2010, 11:01 AM
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Default Re: How to check if VTEC is working?

Originally Posted by $kreech
get a single wire run outside to tap into the vtec solenoid and hook it to a bulb with the other connector to ground, the bulb should light to let u know if the solenoid engages
this, or get a voltmeter/multimeter and place the red (+) cable in A4 with the wire and the black (-) side on D22 or a bolt near the ECU and have a friend hold it while you drive and see if it sends 12V at the specified RPM of your ECU that VTEC activates or if you don't have friends just put it on the seat
Old 07-27-2010, 11:04 AM
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Default Re: How to check if VTEC is working?

Originally Posted by $kreech
get a single wire run outside to tap into the vtec solenoid and hook it to a bulb with the other connector to ground, the bulb should light to let u know if the solenoid engages
rather than run a wire out into the engine bay just run a wire to the ecu
Old 07-27-2010, 11:15 AM
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Default Re: How to check if VTEC is working?

Originally Posted by D16SiHatch
rather than run a wire out into the engine bay just run a wire to the ecu
hooking it up directly to the source (the solenoid) will rule a harness problem. just because the ecu sends the voltage doesnt mean the solenoid will engage.
Old 07-27-2010, 11:49 AM
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Default Re: How to check if VTEC is working?

\/ \/
Old 07-27-2010, 11:50 AM
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Default Re: How to check if VTEC is working?

^^ Lol. Nice
Old 07-27-2010, 12:17 PM
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Default Re: How to check if VTEC is working?

Originally Posted by SeanK325
\/ \/
your officially the coolest kid ever for putting that in your sig.

Especially when you quote things that weren't even said. For example:

Originally Posted by SeanK325
I'm posting useless information in threads which I know nothing about. And I fail.
Old 07-27-2010, 12:23 PM
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Default Re: How to check if VTEC is working?

how did i quote something that was never said? i pulled everything straight from the post. you don't have to be a ***** about it. i wasn't criticizing anyone. i just thought that **** was funny. relax.
Old 07-27-2010, 12:23 PM
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Default Re: How to check if VTEC is working?

Originally Posted by Jimster480
I like to pet hippo's.
Old 07-27-2010, 12:39 PM
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Default Re: How to check if VTEC is working?

Originally Posted by SeanK325
how did i quote something that was never said? i pulled everything straight from the post. you don't have to be a ***** about it. i wasn't criticizing anyone. i just thought that **** was funny. relax.
lol w.e man idc really


Originally Posted by singlecamslamed
lol
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