Vtec not working some one please help - Team Integra Forums - Team Integra
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post #1 of 4 (permalink) Old 05-05-2019, 10:46 PM Thread Starter
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Vtec not working some one please help

So I have a 96 gsr block with a 2000 gsr head built for turbo css block etc etc*
Ran wires to the solenoid an to the power touched them when vtec would hit on my tune just sputtered.
Changed solenoid.
Changed rocker arm assembly an pins
Seal an dowel pin under cam cap 3
Put a ls vtec kit on it to run oil directly to head.
.didnt run wires to ecu from solenoid or pressure switch cause we did the test from the battery an vtec solenoid an got no where.
One thing that I was thinking my buddy changed out my dizzy an took guts from obd1 dizzy an put it in my obd2 dizzy
Can that have anything to do with it I'm running out of things to do some one please help me the car ripps on 15psi with no vtec. But I want vtec to work I didnt build it just to have a non working vtec car

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post #2 of 4 (permalink) Old 05-06-2019, 11:18 AM
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What have you done to make sure you have proper oil pressure?

And why do you have an LS/VTEC kit installed for a GSR head?

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post #3 of 4 (permalink) Old 05-06-2019, 12:04 PM
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I agree with jjkz24. Since the head is already receiving the oil supply internally, running an external oil feed was not necessary. I doubt it would have an effect on the VTEC operation however, unless you have insufficient crankcase pressure release. Considering that you have twice the oil quantity going to the head it would be beneficial to vent crankcase pressure out the back of the block in addition to the venting it out of the valve cover. Otherwise the oil may be collecting inside the head, unable to drain back to the oil pan. Remember, the oil drain is gravity based and excessive crankcase pressure would be a significant obstruction. Lots of oil in the head means less of it in the oil pan. Too little of oil in the oil pan and the there may not be enough for the oil pump to process. W/o proper oil pressure VTEC won't engage. Although at this point VTEC operation should be the least of your worries if you know what I mean.

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Last edited by Built_not_bought; 05-06-2019 at 12:12 PM.
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post #4 of 4 (permalink) Old 05-08-2019, 05:33 PM
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4 things needed for VTEC to work:
Oil pressure (switch triggers the solenoid)
Speed sensor (VSS, yours is electric I believe)
Temperature sensor (for the ECU, not the smaller one that signals the gauge)
Functional VTEC solenoid (sounds like you’ve already been testing this one)
Check these things out and you’ll likely find your problem.
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