mikey_e69

i bought a 96 gsr about 3 wks ago and around 4400 rpms i heard what i thought was VTEC. now i dont think it makes the sound anymore. so my questions are how can i check the vtec solenoid? should i be able to hear vtec? and what does it mean and osund like to have a 2 stage intake manifold??? any helpm is always appreciated!!!

FooD2000

at around 5,800rpm is when you should really hear the secondary butterflies open. Do you let the car warm up before you run it hard? Is your car throwing an engine code? Alot of times people get codes 21 or 22 which is malfunctioning vtec system. Try cleaning out your vtec solenoids and check your oil pressure.

a_integra_87

I found a vtec light to be the easiest and cheapest way to make sure its working good. Alot of people make it seem more complex than it really is. Just get a bulb, either a LED, or a bulb from the back of your gauge cluster. Run a ground anywhere, then splice into the wire on the vtec solenoid. When its in vtec the light will stay lite up.

tgansert

A light that tells you if it's on or off? What happens when it works and makes a worrying noise? I can't see how a a cheap LED can diagnose a potential engine problem.

If you are hearing an ever so slight noise, it's fine. VTEC engages at 4400 and the secondaries at 5700, at which point you'll hear a whole new noise. In either case, just keep an ear out for a metal on metal noise and make sure you let it warm up before speeding around.

A two stage intake manifold allows air to enter the engine normally with your run-of-the-mill intended airflow meant to feed a regularly timed or variably timed engine. To increase performance, the ECU kicks open the additional intake butterflies (via a vacuum line) within the manifold to allow for the higher volume of air necessary to feed a high revving motor that has it's lift duration extended beyond the standard scope of a 1.8L engine.

a_integra_87

sorry about that, i should have stated..."to make sure your vtec solenoid is getting power..." instead of stating what I did. Just ignore my posts Ill stop posting now.

mikey_e69

thanks guys!!! my car isnt throwing an code but i just wanted to know if id feel the vtec and hear it or what. i know when i drove a vtec prelude i could feel the vtec snap!

SP00NFed

if you want to hear and feel vtec get i/h/e, Intake manifold, Test pipe and you'll hear and feel it! :yes:

tgansert

Topend

cool info

JasonST

To answer your question, testing the actual solenoid is simple. Just take a wire, or a gator clip, and unplur the solenoid, and and take the clip put it on ur battery and the other side into the wire going into the solenoid, u should hear a pretty noticeable click. The 12v signal from ur batttery manually opens the vtec solenoid.