Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Vtec engagement issue

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Old Jan 26, 2019 | 06:47 AM
  #1  
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Default Vtec engagement issue

What all can cause vtec to not engage. I've checked the solenoid and it clicks when I add power. Fresh oil. When I add power and bring the rpms up it sounds like it engages. Where should I start?
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Old Jan 28, 2019 | 11:00 AM
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Default Re: Vtec engagement issue

low oil pressure.
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Old Jan 28, 2019 | 03:39 PM
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Default Re: Vtec engagement issue

What makes you think it is not working? Working normally, it doesn't suddenly "kick in" at 4500 rpm and cause the car to vault forward and slam your already terrified girlfriend back in her seat. A D-series just doesn't work that way.

If you have a stock setup with stock ECU and the oil pressure switch operational, an actual problem with the VTEC engagement would throw a code.
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Old Jan 29, 2019 | 01:50 AM
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Default Re: Vtec engagement issue

Originally Posted by mk378
Working normally, it doesn't suddenly "kick in" at 4500 rpm and cause the car to vault forward and slam your already terrified girlfriend back in her seat. A D-series just doesn't work that way.
I don’t even think b series does that
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Old Jan 29, 2019 | 04:44 AM
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Default Re: Vtec engagement issue

Originally Posted by famdakam
What all can cause vtec to not engage. I've checked the solenoid and it clicks when I add power. Fresh oil. When I add power and bring the rpms up it sounds like it engages. Where should I start?

@White_EG1 If you read his post, thats what the op is trying to do w/o knowing how vtec and basemap works.
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Old Jan 29, 2019 | 07:53 AM
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Default Re: Vtec engagement issue

Originally Posted by famdakam
I've checked the solenoid and it clicks when I add power.
It sounds like he already tuned it himself tho
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Old Jan 29, 2019 | 09:33 AM
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Default Re: Vtec engagement issue

He must be looking for a kick or something.
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Old Feb 2, 2019 | 12:34 AM
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Default Re: Vtec engagement issue

Y ma vtack crack stop at 10k n sondz lik 2 stroke? I know that it's not supposed to "kick" But sure can hear if it does. Of course not like a b-series. I have checked wiring, solenoid works, how should i test the oil pressure switch? I am going to run a light (only for testing purposes!!!) so I know forsure that the solenoid is not getting power. Is the way vtec engages different for different obd 0,1,2? Did obd2 use the ckf? I am thinking that my problem is somewhere in the engine.

Thanks
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Old Feb 2, 2019 | 05:35 AM
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Default Re: Vtec engagement issue

If the check engine light is on for any reason, the ECU will refuse to engage VTEC.
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Old Feb 2, 2019 | 11:46 AM
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Default Re: Vtec engagement issue

I fixed the knock sensor code already and light has been off since, but still no engagement.
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Old Feb 2, 2019 | 06:36 PM
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Default Re: Vtec engagement issue

My D actually dips in torque at engagement but maintains it to fuel cutoff at 7.5k rpms- prob needs tuning, were I to care.
If you're throwing a code at engagement just run the wire from oil pressure switch to the vtec spool solenoid wire like a Y.
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Old Feb 3, 2019 | 06:44 AM
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Default Re: Vtec engagement issue

Originally Posted by famdakam
I fixed the knock sensor code already and light has been off since, but still no engagement.
How are you verifying no engagement?
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Old Feb 11, 2019 | 09:22 PM
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Default Re: Vtec engagement issue

Originally Posted by tony_2018
How are you verifying no engagement?
I'm not getting power to the solenoid.
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Old Feb 24, 2019 | 07:40 AM
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Default Re: Vtec engagement issue

It was most likely the knock sensor again. Replaced it and now it works. I also did the timing belt while doing it i had found that the ckf wires were getting eaten by the alternator so i replaced it to. Thanks appreciate it.
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Old Feb 24, 2019 | 02:58 PM
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Default Re: Vtec engagement issue

But before you stated that you had already cleared the code for knock sensor. So you’re saying that “most likely” it was the culprit again with no cel present? Thought you didn’t even have power to solenoid... Lol
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Old Feb 24, 2019 | 03:49 PM
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Default Re: Vtec engagement issue

weird tech threads these days mang....its no wonder ronj left.
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Old Mar 6, 2019 | 04:27 AM
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Default Re: Vtec engagement issue

My Vtec is not working after camshafts swap. I put some buddy club stage 3+ cams on my b16a2 and Vtec stop working, at least it is what’s I think because it doesn’t feel the change of power nor the sound at Vtec crossover point. I tested oil pressure (65psi), Vtec solenoid (it clicks), ecu síganlas are ok, only way to make Vtec engage again is swapping oem camshafts in.

any ideas what could be happening?
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Old Mar 6, 2019 | 12:28 PM
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Default Re: Vtec engagement issue

Originally Posted by White_EG1
I don’t even think b series does that
Mine does to some extent but I have Crower 402 cams.
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