I have searched and searched but can’t seem to find a post that really resembles what my car has been doing since day one. First, let me say that the car did this when it was bone stock. Each morning, when the car is cranked for the first time, at roughly 1500-2000 rpms under mild load, the car would “hiccup”. An ever so slight hesitation where the car would seem to momentarily stop accelerating and then recover. This hiccup as I will call it, lasted for less than a second and then not really appear again under normal driving. I have obviously modded the car since then and was hoping that the hiccup would cure itself as I replaced stock parts with new ones. I changed the air intake, supercharger pulley, added a sprint booster, and LET Tune. I have had the “faulty leaking “ sensor on my transmission replaced and have fresh transmission fluid in the car. I have 12,000 miles on it and have changed the oil every 1500-2000 miles. Nothing affected the hiccup and for last year or so, no change in the symptom.

Here is the thing….the hiccup is now getting worse. It used to be a once a day thing, now it is happening all the time under mild acceleration mainly from dead stops. Has anyone had this issue or have any ideas of what I should check? It does not happen under full throttle take offs, and I cant really tell if it happens on the freeway because this car builds low end boost so quickly. From take off, the car is still at a vacuum and not boosting when this occurs so I do not think it is the supercharger engaging but I could be wrong. My first though is transmission related but I am not for sure.

Any thoughts would be appreciated!

 

I have the same hiccup on mine and I only notice it exactly as you've described. Only under low load and leisurely acceleration. I however suspect its the supercharger clutch engaging because of when it happens. Always at the same RPM. If I move out briskly it doesn't occur even the first time I use the car for the day. However it will do it after driving for a while if I'm stuck behind a Granny leaving a light, or similar situation, just not as noticeable. Soooo, your not alone.

Les

 

Absolutely,positively supercharger clutch engaging! Under hard acceleration you don't notice it. At part throttle the sudden load placed on the engine is very noticeable.

 

Mine has always done that too.

 

Hate to tell you, but my NA does the same thing. I don't think it was there before I got the TVT-250 tune, but it is definitely there now. It only does it once, when cold, every time. Any other ideas?????

 

Mine does it also, but only on the first press of the throttle. I always assume it's the electronic throttle control calibrating itself. If you notice, you can always pop down the gas for just a split second while creeping along in say a parking lot or deck, and nothing will really happen apart from maybe a little rev or lurch if you really push it. But a quick jab at of does next to nothing. There's always a bit of delay in the throttle. What do you think?

 

Mine does it....but only when its sub zero out.
Soon as it warmed up here a week ago or soo it didn't do it.
Only did it when first coming out down my street and leaving the neighborhood.
Then went away...I tried and tried but could not reproduce it until car sat long term and took it out in the cold again...and Damn if it didn't do it again.
But once it was warmed up ...it didn't do it??

Been scared its the SC clutch going?

At least now I feel better its not just me...sorry to be of no help.

Oh and I beat on my car not baby it so I felt I did it thats why I feel better that I am not alone.....

Been waiting for it to blow up and then take to the dealer and go "fix it"
"FIX IT"
http://www.youtube.com/watch?v=yo3uxqwTxk0

I woulld like to know what it is before I take it to them and go "FIX IT"

K.K.

 

Well at least I am not alone. It has been cooler here and I have been driving the car more often. I just ran out of Warranty, but it sounds like a "normal" thing. Thanks for sharing!

 

You can wire the supercharger to be on all the time. I would do this as a test to see if the Hiccup is then gone. If this stops the problem then you know it is all normal and will feel better

 

Hiccup Remedies
Folk
Anise seed (for infants) Pour a cupful of boiling water over a teaspoonful of anise seeds; steep; give the baby one or two teaspoonful. It often cures immediately. Nursing the baby will frequently stop the hiccups, too.
Apple cider vinegar Slowly sip a glass of warm water mixed with one teaspoon of vinegar. Works better when the water is drunk from the far side of the glass.
Baking soda (bicarbonate of soda) Mix two teaspoonful of baking soda, two teaspoonful of aromatic spirits of ammonia with four ounces of peppermint water. Dose: one tablespoonful; repeat if necessary.
Breathing Breathe into a small paper bag that is tightly pressed around your mouth. Or try spreading your arms out like a "T" and take a very deep breath. Repeat several times. Or try taking a deep breath and holding it as long as you can.
Chamomile Put 1 drop of chamomile essential oil in a brown paper bag; hold bag over nose and mouth; breathe in and out slowly and deeply through the nose.
Camphor Mix three drops of spirits of Camphor in half a glassful of water and drink.
Collar bones Put strong pressure on the collar bones.
Honey Take a teaspoon of honey.
Ice Eat or suck on a piece of ice.
Lemon Mix the juice of one lemon in half a glass of water; drink; repeat if the first drink didn't stop the hiccups.
Lemon/salt Put a teaspoonful of salt on half a lemon and then suck the juice out of the lemon.
Lemon/bitters Eat a slice of lemon which has been soaked in angostura bitters.
Orange Drink the juice from 1/2 an orange.
Peanut butter Eat 1 teaspoon of peanut butter.
Pepper, red Pour a half pint of boiling water over a quarter of a red pepper; steep; drink a wineglassful. If no red pepper is available, use five drops of tincture of Capsicum in a tablespoonful of water.
Pineapple juice Take a few rapid swallows of canned pineapple juice. Repeat hourly if necessary.
Sugar Cure hiccups by placing a teaspoon of sugar on the tongue and washing it down with a glass of cold water. Another sugar remedy suggests swallowing it dry.
Sugar/lemon Soak a cube of sugar in fresh lemon juice and let it dissolve in your mouth.
Tartar, cream of Add 1/3 teaspoon of cream of tartar to 8 oz. of warm water; drink 2 tablespoons at a time on an empty stomach.
Water Drinking water in various fashions has been an age-old cure. Here are several variations. Plug your ears and drink a glass of ice cold water; or slowly sip a cup of warm water; sip a cup of warm water with honey in it. For infants: hiccups usually disappear in 5-10 minutes. If hiccups do not disappear, give the baby a bottle of sugar water. Mix one-quarter teaspoon of sugar with four ounces of water.

 

D-bag. But funny as hell.

 

Anyone try doing a throttle reset ? I've noticed that even with a Sprint Booster it helps every now and then......or it maybe as some say it's just the SC kickin in.

 

As the song goes, I can see for miles and miles and miles......

Having a data logger is useful to see the ignition, throttle position, boost, and several other things. It would give you a real time view into the engine operation. You can record everything and pull out the sd memory chip to scan it all on your computer, or simply have a passenger watch it on the display for you, safety first.............

Also Sadly, if I had the data logger sooner I would NOT HAVE INSTALLED GAUGE PODS. THe Zietronic and display is more complete and compact. BUT there is no way Iam gonna take out all the wiring, connectors, and sensors, did I mention connectors.........phew.

Weekend date night again, yippie...............Party safely, Woody

 

Same exact situation for mine - except it is accompanied by a "chirp".
The colder it gets, the louder it chirps.

 

Mine has always done this as well. I was always under the impression that it was something about it shifting from 1st to 2nd. Because It always kind of lurches and takes off after it "hiccups."

 

Same here and from day one. Comes and goes with cool weather. Dealer said normal don't worry, but you can't help it on days when it is particulary loud. 28K AND SO FAR SO GOOD KNOCK ON WOOD!

 

Don't think so.
I wired the SC up direct and the car doesn't like it! Basically won't run, undriveable. Worse than when you over temp. Car knows you are trying to fool it and it doesn't like it.
Anybody else try this besides me? Same result?