If the solonoid was unplugged, the check engine light would come on and the ECU would throw a code.

VTEC may in fact be "ALL WELL", but that doesn't mean that there isn't another issue.

 

There is absolutely no reason to.

 

I appreciate everyone's input.

It is getting cooler here in Southern Arizona, and now I'm also experiencing rough starting in the mornings, or when the cars sits for a few hours.

I don't know if the two problems are related, but will have the dealer check it out.

Thanks again for all the feedback.

Jos

 

Sometimes these cars react to an abrupt weather change. My car did it one time when it was brand new. It happened going from very cool weather, to very warm, Summer weather. The ECU has to re-learn these changing conditions. If it wants to stall, don't give it any gas, let it stall. If you do this a couple of times, the ECU will re-learn the conditions, then the car will run normally.

In my case, it ran rough through 2-3 driving cycles, then it was fine. That was 3 1/2 years ago, and hasn't done it since. I'm not saying that this is the problem, but if it wants to stall, let it. Another thing you could do, is reset the ECU. The backup fuse is the 2nd fuse from the top right, near the foot area. Mine is near the driver foot area. Do a search under "map whack". Sometimes the map sensor can act up.

Question for you jbeni96, how many miles are on your car?

 

Racer, I don't know what's wrong with your S2000, but VTEC kicks on this car relatively well. You can look at any dyno chart and see it. As far as VTEC always kicking in, it does NOT always work. My last car was a 98 Prelude with engagement at 5400 and redline at 7600. One morning I was running late for work and traffic wasn't letting up leaving my development so I floored it. Know what happened? Car went all the way to redline, without the normal VTEC kick. It felt like I was driving an old SOHC non-VTEC Civic. Smooth, efficient, and hardly any power.

VTEC depends on a variety of factors and one is the computer telling the engine that VTEC is go. Without that signal, the engine will perform just like any other engine with a single cam profile. If he notices a 'kick' normally and then it goes away, something is malfunctioning at some point.

 

Huh




There is nothing wrong with my car.

206 RWHP on a bone stock AP1



[QUOTE=chimaera2008,Dec 13 2007, 09:14 PM]but VTEC kicks on this car relatively well.

 

So now you're calling me a liar and the original poster a liar. Classy. First off, congratulations on your three-year-old dyno results on a car that surely hasn't changed performance since then [/sarcasm].

Second, if you understood a thing about VTEC, as a system, it engages to increase performance. It exists so that you can keep fuel economy at low RPM and have more horsepower at high RPM. When the crossover happens, the cam profiles change to INCREASE air flow which in turn INCREASES fuel consumption. What happens when the engine takes in more air and gas? It goes faster, and at the same time, just happens to be quite a bit louder and more pronounced.

On to the next point. When I leave my housing development, I have to make a left-hand turn onto a crowded 6 lane road with no yellow lane (because there is a median). This means, as you well know, that I have to cross 3 lanes of traffic and enter the opposing 3. I'm sure you can handle those numbers. Navigating and timing 4 lanes of traffic at once can be tedious, so the only way to get out of my development is to accelerate, and fast! I'm sure you've done this more than a handful of times in your driving career. Don't sit there and judge my driving habits (after all, your name is RACER, right?).

ALSO, first thing in the morning, it tends to be a LITTLE CHILLY, even here in good ol' Arizona where the average summer temperature is 105. The morning I took the lude out and the aforementioned happened, it was a cooler morning and the engine hadn't fully warmed up yet, NOT ENOUGH TO ALLOW VTEC, but just enough so that the limiter didn't stop me at 5400. If you can show me "heatbog" at 60 degrees on an engine that's not warmed up, I can show you a liar. I can guarantee you on this morning, the cam profile never changed (VTEC never operated).

LASTLY, you are RIGHT about ONE THING: the ECU does manage many, many things every millesecond once the ignition gets turned on. BUT if just one of those many many things is the slightest bit wrong, VTEC will not engage. It is not strictly a physical change like so many people believe. This is how Honda is able to say that they haven't had a single "VTEC failure" because the problems happen before VTEC ever engages.

Now, I dare you to go ahead and be a quote whore on THIS post. I GUARANTEE whatever you post will not be read by myself (you've been ignored), so you shouldn't even waste the keystrokes. I'm sure the four people who haven't blocked you yet might enjoy it though.

 

[QUOTE=chimaera2008,Dec 13 2007, 09:14 PM] Racer, I don't know what's wrong with your S2000, but VTEC kicks on this car relatively well.

 

[QUOTE=chimaera2008,Dec 13 2007, 11:18 PM]So now you're calling me a liar and the original poster a liar.

 

[QUOTE=chimaera2008,Dec 13 2007, 09:14 PM] I don't know what's wrong with your S2000, but VTEC kicks on this car relatively well.