I am having a problem with my VTEC cutting in and out....I have plenty of oil, I have a brand new vtec solenoid, wiring is fine, brand new dizzy, and I am still having problems....If anyone can give me some help on the problem it would be great....the motor is a b16 in a 92 civic hb cx...was working fine up to about 2-3 weeks ago...please help me it is pissing me off...thanks

 

BUMP...HELP

 

New oil filter? Is your speedo sensor working properly?

 

yeah it has a new oil filter...and the speed sensor is working properly....

 

Have you tried a different ECU or tested your ECU on another car.

 

iM AM TRYING THAT TONIGHT BUT PEOPLE KEEP TELLING ME THAT....THE ECU IS NOT THE PROBLEM BUT i AM TRYING IT...I WILL TRY ANYTHING AT THIS POINT...THANKS FOR THE INFO

 

It's all about eliminating the possibilities one at a time.

 

that is what I am doing but if this doesn't fix the problem is there any more possibilities...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92eg’n &raquo;</TD></TR><TR><TD CLASS="quote">I am having a problem with my VTEC cutting in and out....I have plenty of oil, I have a brand new vtec solenoid, wiring is fine, brand new dizzy, and I am still having problems....If anyone can give me some help on the problem it would be great....the motor is a b16 in a 92 civic hb cx...was working fine up to about 2-3 weeks ago...please help me it is pissing me off...thanks</TD></TR></TABLE>

hmm i was going to say that maybe you need more oil. My friend had a similiar problem and the place that worked on it said there was something wrong with a o2 sensor..... i believe, i know it had something to do with o2 though. Sorry i cannot be more clear. I jsut don't remember.

Also might wanna try checking the spark plugs, and check out your compression why your at it. A kid at my friends turbo shop just recently had trouble with his vtec because the sparks weren't firing right.

 

tried new ecu still didn't fix problem...i am going to try and check my spark plugs and the compression...the o2 sensor is fairly new like 6 months do you still think that I should check that...thanks for all the info hopefully I can fix this ****...

 

if it is that new then no.. maybe make sure it is installed correctly. But i would guess either something concerning your oil is not right, maybe the pump, or something with the engine not getting enough oxygen.

The 02 sensor wouldn't have alot to do with that ne way. Check the plugs for now. You also might wanan post this in the Type R forum, those guys might have some more ideas.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92eg’n &raquo;</TD></TR><TR><TD CLASS="quote">...was working fine up to about 2-3 weeks ago...</TD></TR></TABLE>Had anything been done to the car then?

 

sounds to me like you have a bad connection at your solenoid, ecu or plug in between, then again your engine light would come if it was an electrical short with the vtec solenoid...do you have chipped ecu reading only various sensors or do you have a OE ecu? your O2 sensor has nothing to do with your vtec cutting in and out...

and when you say cutting in and out.. do you mean coming on then off then on then off while your rpm climbs? just some thoughts...

 

yeah the vtec is cutting in and out as my rpms climb...I am running an oe ecu and the only mods to the motor are type r intake manifold and i/h/e....thanks for the info keep it coming...

 

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...ANYONE PLEASE HELP...

 

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You checked your oil level again?

 

yeah oil level still good....im running out of options...

 

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check all ur harnesses and make sure they are tight and snug. and all sensors on the engine

 

ive checked all the sensors from ecu back and there are no open wires and all the plugs are tight...

 

even if the plugs are nice n tight, you could have a loose pin at a plug, which could be a pain in the *** to find...but like i said before it would throw a code 21 or 22 if it was something with your vtec electrical system...this is a tricky one...

I'm thinking one of your vtec orifices are maybe clogged and is not letting oil go to either the intake or exhaust rockers(depending on which way the oil flows) If i were you i'd have the vtec oil psi checked at the head..Your gonna have to have a shop do this, assuming you dont have a oil psi gauge..