Lately I have noticed my vtec seems to be kicking in a little bit harder. I will be driving and then when it hits about 3500 rpms the power will cut for a second and then it will come back a little bit stronger. I assume this is vtec? Is it possible for that to go out or bad? my motor does have 201,xxx on it...?

 

you might wanna check to see if its actually a misfire or something of that nature. sometimes if you run low on oil or have worn bearings, etc., you motor will not be able to build sufficient oil pressure by the set engagement rpm, causing it to "kick" in later as the rpms increase and pressure builds... but as ive had vtec crossovers from 3000to6000 ive never felt a hard pull..
check your spark plugs, cap, rotor, etc. and see if that solves the problem

 

I thought this was going to be one of those "when animals attack!" type deals.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by momstaxi &raquo;</TD></TR><TR><TD CLASS="quote">you might wanna check to see if its actually a misfire or something of that nature.
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Last time i had my car in the garage i did pull all the plugs and checked the wires... and i did notice a build up of carbon on my plugs in the cylinders to the far right of the head (waterpump side). I figured it had something to do with maybe my injectors haveing a small drip after the car was turned off and the next time i started it that would do its little combustion thing....? I can check the dizzy and the cap tomorrow..... Is there a vtec solenoid or control module of some sort with wiring to it that may be corroding or going bad some how that i should look for?

 

you may want to check the screen in the vtec selenoid to see if there is something clogging it...your vtec selenoid is pretty much either hit or miss...if it's bad, it's bad...if it kicks in late, it's not the selenoid that is causing your problems...

 

So i had my car in the shop today and I started looking at things... I started with basic tune up stuff... then i unplugged the vtec solenoid.... there was a bunch of oil in the connection... Now comon sense says that isn't normal? Does that mean the solenoid is bad and oil is some how following the lines into the connection? or?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jagged4698 &raquo;</TD></TR><TR><TD CLASS="quote">then i unplugged the vtec solenoid.... there was a bunch of oil in the connection... Now comon sense says that isn't normal? Does that mean the solenoid is bad and oil is some how following the lines into the connection? or?</TD></TR></TABLE>

or it could just be oil leaking from the valvecover gasket...also check that the vtec oil pressure switch is fully threaded into the vtec soleniod...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nick H &raquo;</TD></TR><TR><TD CLASS="quote">you may want to check the screen in the vtec selenoid to see if there is something clogging it...your vtec selenoid is pretty much either hit or miss...if it's bad, it's bad...if it kicks in late, it's not the selenoid that is causing your problems...</TD></TR></TABLE>

I have tried to take my solinoid off my 5th gen to clean it but i could never get to the bottom bolt.....do you know a way to get to it to take it off?

 

it's easier if you remove the intake first...it allows you to get down there with if you use an extension...

 

How in the hell do you people feel SOHC VTEC? I don't on my 91. It's not a performance VTEC, it's a gas saving version of VTEC. Ride in a serious DOHC VTEC and then you can say you feel it "kick" on...whatever that means.

 

We normally can NOT feel it kick in and that is why it is so weird. Ok maybe we are talking 2 different units. I may have taken off the oil pressure regulator???.... the little thing kinda kitty corner to the upper left of the valve cover. All i know is i un plugged that sensor to find oil in there.... then i pulled the sleeve back on that and followed the wire and found little bits of oil on the wire... so errmmmmm???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jagged4698 &raquo;</TD></TR><TR><TD CLASS="quote">Lately I have noticed my vtec seems to be kicking in a little bit harder.</TD></TR></TABLE>

This sentence makes a comparison because of the usage of the word "harder". That means you are comparing the car's state to before, which means you did indeed feel it "kick in" at an earlier time.

Sorry for being a wiseass, I'm just stating what I read.

 

thats beyond the point i'm trying to get at. I need to know what that thingy-dealy is so i can replace it to see if that is causing my problems...

 

Well...did you check your oil yet?

VTEC depends on 5 things in order to activate...oil pressure is one of them. And you can't get sufficient oil pressure without the proper oil level.

 

BTW, my 91 Accord with SOHC VTEC has almost 260,000 miles on it and it still runs fine...VTEC doesn't "go bad" as you first suggested.

 

vtec gone bad?

i wanna know more about vtec in a way cuz i found ways for it to kick in better with a auto. If you press the gas in stages the car will down shift one gear at a time giving it a one, two and go effect. im running on 111,000 miles and i feel i have a lot more power then 150 hp.

the power effect is when the motor is sucking power out of the batt for the spark plugs at WOT, happens alot to people

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shadow_ridge &raquo;</TD></TR><TR><TD CLASS="quote">vtec gone bad?

i wanna know more about vtec in a way cuz i found ways for it to kick in better with a auto. If you press the gas in stages the car will down shift one gear at a time giving it a one, two and go effect. im running on 111,000 miles and i feel i have a lot more power then 150 hp.

the power effect is when the motor is sucking power out of the batt for the spark plugs at WOT, happens alot to people</TD></TR></TABLE>

What??? Stop being a ricer man. I'm sure your butt dyno is accurate and you have 30530985093 horsepower!!!

Ever wonder why people around you are laughing all the time when you drive like that??? Just drive the car.

You obviously have zero idea of how the VTEC system works.

 

Well there are factors that can make the vtec "go bad"..... i believe this little oil pressure regulator thing is attatched to the vtec solenoid? correct me if i'm worng... and it has a small filter.... If that filter get clogged and goes bad i'm sure that will effect the amount of oil allowed to flow through it. but any way thats not the case.... this connector should not have oil in it and thats a fact.... i change my oil regularly and then check it 2 or 3 weeks after i change it to make sure i'm not burning large amounts and such. So i'm guessing that i'm going to replace the whole vtec solenoid and wiring as well.

 

like i said before, check to make sure the actual vtec pressure switch (the round two wire plug) which is threaded into the vtec soleniod is tight, perhaps it is loosening up and allowing oil to leak through...