Did a search. No answer.

[Bryan]

So, like many noises that I haven't noticed before, I can't remember if they were there all along or had just manifested. A couple of weeks ago, I noticed that my valves make a soft fluttering noise durring accelleration and only durring accelleration. I cannot get the car to make the noise if I rev the engine in neutral. As an experiment, I drove my friend's G35 to see if it made the same noise but, it did not. Although, the G35's engine is almost twice the size as mine and its exhaust it much louder so that may have masked the noise. Anyway, is this noise just a simple characterisitc of the GT engine?

[Ponyota]

Could be that the air flow sensor (MAF I think it's called) is making a little more noise now.. I believe they have a ticking sound. Have you changed your oil lately? You might want to check to see if it needs to be topped.

[tnpartsguy]

how many miles? these engines DO require a valve lash adjustment.

[Ponyota]

No kidding? How many miles should one get it? I have about 19,500 on mine..

[Mase]

The MAF can't make any noise. vsv's, on the other hand, can make a ticking noise but it doesn't matter if it's under acceleration or not.That fluttering noise you're hearing...does it sound any different than the struggling noise you get if you try to accelerate in a gear that's too high for your ground speed?

[Ponyota]

whats a vsv? I have this ticking sound.. Is it normal?

[Smokin' Rubber]

the VSV is what adjusts the vaccuum for the engine and the ticking is normal as it switches back and forth (hence why there are like 4 hoses connected to it and not just 2

[ColonelPanic]

Is it just when the engine is cold? My car (base) has a nice knock upon acceleration when cold, but goes away later. Haven't been able to get it fixed. The dealer never could find anything wrong, so more or less I have to wait until it blows up and have it hauled in so I can say "told you so." lolThe valve adjustment on these engines is due at 60,000 miles...

[Bryan]

The sound is not like when the car is in the wrong gear. That noise is a heavy knock while the one I'm experienceing is a slight fluttering. The vsv as you call it is a totally different noise. If I remember, that noise is a constant "tick, tick, tick" noise comming from the air box. I'm just guessing that the fluttering is a normal noise that my engine makes, but wanted to be sure it wasn't serious enough to bring the the stealership.

[goodvibe]

It could also be the fuel injectors. Not much sound deadening in these cars so you here a lot. I wouldn't worry about it. You don't need to check the valves for 60K mi and even then they may not need adjustment.

[Dezz1]

I believe I know what you are referring to. If it is a ticking sound that comes and goes while idling and is no longer evident when accelerating and driving, there should be nothing to fear. The computer is just adjusting for combustion. But, if you still hear the ticking while acceleration and during cruising speeds, we may have a problem. In addition, do you still have your lift?

[remusrm]

your oil is low. my mirage used to have that valve hash when it was low. also on the miles you have a recomend a thicker grade oil since the gaps widen within the engine... 5w30 is really thin, 10w30 is best for any car. they use the 5w30 because of cold weather areas...

[Bryan]

Let me start off with some history on my end. My first vehicle was a 1987 Ford Ranger 2.3l. Talk about a mechanical nightmare but that is another story. Upon cold startup, the valve tappets would make a gut wrenching rapid rapping noise that would last up to five seconds. While valve noise was not too pronounced at idle, the truck would make a very noticeable "valve noise" ONLY DURRING ACCELLERATION. The manual stated that the tappet noise was a normal characteristic of the engine but I had a reliable mechanic tell me otherwise. The valve noise was still noticable after I had the engine rebuilt.Naturally, after having so many problems with the truck, I opted to buy a Toyota product for my next vehicle. I found my new car at a credit union with only 43 miles on it. It was appartently a GM company car that didn't see much use. Since buying it, excluding my horrible experience with the Pontiac dealership, I've been very satisfied with the car. I tend to be VERY (removed) about caring for my car. First two oil changes were done at the dealership. I did two oil changes at 6000 miles because the dealership overfilled my engine by a whole quart. Upon failing to correct the issue, and another, I have changed my own oil since then. (And yes, I did file a complaint with the dealership and GM about it.) I've only used Castrol Syntec Blend 5W-30 because it is one of the few oils that lists that it is 6094M complient. I don't use a full synthetic because I can't justify the cost of changing it every 3000 miles. I check my oil EVERY time I fill up for gas. With the exception of when the dealership overfilled it, it has always been spot on. Except for a few occasions, I've always used Chevron fuel. (91 octane of course!)I have been able to decern that there has always been a steady "tick, tick, tick" sound comming from the air box. The engine has always made that noise since I got it and have discovered that it is a normal sound this engine makes. (Apparantly known as the VSV.) Also, the engine tends to make a knocking noise durring cold startup when it's cold outside. But that sound goes away when the car warms up. The sound I'm talking about only happens durring accelleration, anytime. I can tell that it is the valves making the noise but the sound is very soft. It can't be heard if the fan is on or if the radio is on. The only reason that it alarms me is because my old truck made a similar noise, as I mentioned above, only MUCH louder. To tell you the truth, after writing this post, I'm thinking I'm getting OC. But, it never hurts to get a second opinion. By the way, I'm at 9000 miles.