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VTEC not working right

3360 Views 15 Replies 11 Participants Last post by  Auz
This started to happened recently, if I hit VTEC on 2nd it seems that the car is holding back, no power but once I drive it for about 10 to 15 min, then everything is ok………I don’t know how to explain it that good, but it seems like something is grabbing the car and holding it back….like it’s losing power or something, I can feel the hold when I hit 5000 rpm, and I can hear the VTEC **** in but no power……….i took it to the Honda people but for some reason I don’t think they will feel it……just in case they tell me nothing is wrong…..do any of you know what could be the problem……the car has only 36000 km on it..........thanks
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was the car warmed up when you were trying? how is the oil level?
the oil is good, the car was not wrmed up, but this never happend b4.........and it shouldn't
Auz said:
the oil is good, the car was not wrmed up, but this never happend b4.........and it shouldn't
actually YES it should. the ecu wont let VTEC kick in unless your car is up to operating temperature (there are other things also but this is the one in your case). its to save you from killing your engine when you do stupid stuff like try to hit VTEC when your engine is cold :rolleyes:
4bidden said:


actually YES it should. the ecu wont let VTEC kick in unless your car is up to operating temperature (there are other things also but this is the one in your case). its to save you from killing your engine when you do stupid stuff like try to hit VTEC when your engine is cold :rolleyes:
but this never happend b4, and the feel is like somthing is holding the car.....it's like when you are trying to run and someone is grabing you....it feels as if you are draging somthing.....
4bidden is right!!

I had that problem and Honda told me that it was because the oil pressure wasn't high enough, and that I should wait for it to warm up so the pressure could get up where it needs to be.
Re: AUZ is right!!

Mike Natoli said:
I had that problem and Honda told me that it was because the oil pressure wasn't high enough, and that I should wait for it to warm up so the pressure could get up where it needs to be.
i can see that happening, but why would it happend now, and not before.....it could be the oil, but i'm thinking it's somthing else....i just called them and they didn't look at it yet...it's been over 2 hrs........i need all posible things that could make this happend
my car does that sometimes too.....sometimes vtec kicks hard and sometimes it just make noise and doesn't do anything..
Who cares if it is not pulling hard when the engine is cold? Don't push your car to the limits without it being warmed up...do you want to fuck up your engine?
Leprechaun said:
Who cares if it is not pulling hard when the engine is cold? Don't push your car to the limits without it being warmed up...do you want to fuck up your engine?
Totally agreed m8
seriously. are you crazy? unless your temp guage reads at least halfway (or whatever it holds steady at during normal driving) then you shouldnt shift past 3500 at the highest. if you keep trying to hit vtec while the engine is cold you can say goodbye to your engine. thats one of the worst things you can possibly do to your engine.

think about it...the oil has to heat up to be thin...when its thick it does not protect the engine parts well at all. if you spin the engine that high while the oil is cold your going to be in trouble.
Same thing happened to me, but it did it for a month. I would hit VTEC in every gear and there would be no power. It would kick in, but just not pull, then all of a sudden, it just started working again all by itself. I think this happens to alot of people. You just may have to wait it out for awhile, and it will probably fix itself....
Weenie said:
seriously. are you crazy? unless your temp guage reads at least halfway (or whatever it holds steady at during normal driving) then you shouldnt shift past 3500 at the highest. if you keep trying to hit vtec while the engine is cold you can say goodbye to your engine. thats one of the worst things you can possibly do to your engine.

think about it...the oil has to heat up to be thin...when its thick it does not protect the engine parts well at all. if you spin the engine that high while the oil is cold your going to be in trouble.
Oil viscosity is one issue when the temperature is still cold in the engine, but it isn't the main issue. Oil is captured at the filter (via the anti-drainback valve) so it is very close to the top of the engine on startup. Oil will be properly circulating within 30 sec of startup, but you are right - it won't be optimal temperature.

The issue isn't so much the oil as it is the properties of the metal in the engine. If the car isn't warmed up, then the parts aren't all at their proper tolerances relative to each other. The change in size relative to each other is minute, but is enough to damage the engine over time if the engine isn't properly warmed up. The aluminum in the engine expands and contracts at a different rate than the cylinder sleeves when the temperature is changed. Basically - if you sum it up, the parts just don't fit properly together until the engine is at operating temp (this applies to any dissimilar materials).

I would say to stay under 4500 (I don't know why you would need to go that high anyhow) until it is at operating temp. Take it easy and slowly build up to climax (hehe). You want your car to last!
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Sounds to me like youve just got use to the car (still finding out the systems and limitations), and you probably got on it before it was warm enough....as before you probably never tried that.

One thing I like about my 4g prelude digital dash is that you know right away when it will let you hit vtec (the first bar on the temp gauge flicks up one bar)....other than that your limited to about 5500 rpm....if you try to get past itll sound real odd and youll stay on the low-end VTEC cam profile....just struggling.....in reality this is the limit of the low-end cam and then finally youll tap a revlimiter.

Its funny too , ive sat on my little cold rev-limiter , waiting at 5500 or so almost half throttle and its funny to hear it not revving out and hitting a limiter , its like bowbbowbowbowbowbow.

Then the bar goes up one bar on the temp gauge and ding....you hear the pin click. VRBAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHH , and im off.

I dont suggest doing that , but i wanted to show my friend one time...since he didnt believe me.

-- Also HIGH-CAM VTEC Engagement all depends on oil-pressure, if your too low on oil it wont engage.....

I think only prelude's have this.
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BaronVonFlop said:

I would say to stay under 4500 (I don't know why you would need to go that high anyhow) until it is at operating temp. Take it easy and slowly build up to climax (hehe). You want your car to last!
Yeah Exactly....Id even say 4500 is taking it too far. Id take it to about 3000 the 2.2 has enough torque to easily get around under that. The preludes oil-pressure also gets max pressure at 3000. I forget as well but a system also kicks in there....Im pretty sure its like a 3rd stage of vtec....or the 2nd stage and its a stage that readies for VTEC and i think the timing changes up some....or something. I forget what exactly what it does but you can hear something as well as notice the power comes on strong after that.
mike_sho said:
Sounds to me like youve just got use to the car (still finding out the systems and limitations), and you probably got on it before it was warm enough....as before you probably never tried that.

One thing I like about my 4g prelude digital dash is that you know right away when it will let you hit vtec (the first bar on the temp gauge flicks up one bar)....other than that your limited to about 5500 rpm....if you try to get past itll sound real odd and youll stay on the low-end VTEC cam profile....just struggling.....in reality this is the limit of the low-end cam and then finally youll tap a revlimiter.

Its funny too , ive sat on my little cold rev-limiter , waiting at 5500 or so almost half throttle and its funny to hear it not revving out and hitting a limiter , its like bowbbowbowbowbowbow.

Then the bar goes up one bar on the temp gauge and ding....you hear the pin click. VRBAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHH , and im off.

I dont suggest doing that , but i wanted to show my friend one time...since he didnt believe me.

-- Also HIGH-CAM VTEC Engagement all depends on oil-pressure, if your too low on oil it wont engage.....

I think only prelude's have this.

this sound more like it...........so i guess it is that............Thanks
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