problems at launch

phazeneon · Post by **phazeneon** » Fri Dec 12, 2008 6:27 pm

im having problems when im at the light, and flooring it when it turns green. it hesisitates as soon as i hit the gas, like it's about to die out, but after a second it picks right up.
there's no misfire, just changed the oil and everything seems to be okay. this happens occasionally then rarely. what's the deal
BTW: ATX

sxmania · Post by **sxmania** » Fri Dec 12, 2008 11:41 pm

mine did something similar 5spd tho, it seemed to go away when i replaced the plug wires.

.02

excon · Post by **excon** » Fri Dec 12, 2008 11:56 pm

huh?

you put it to the floor the moment you see it turn green, but it doesn't do anything... for how long? are you sure you're not getting wheel spin?

dodgeneonzl · Post by **dodgeneonzl** » Sat Dec 13, 2008 2:49 am

wow, i was about to ask you guys the same thing too! I've been getting that recently... mine just seem to like sputtered for like half a second to a second.... almost like if it's not getting enough fuel or something...

Paul56 · Post by **Paul56** » Sat Dec 13, 2008 8:26 am

phazeneon wrote:im having problems when im at the light, and flooring it when it turns green. it hesisitates as soon as i hit the gas, like it's about to die out, but after a second it picks right up.
there's no misfire, just changed the oil and everything seems to be okay. this happens occasionally then rarely. what's the deal
BTW: ATX

What happens upon normal acceleration away from the light?

...I'm talking about the kind of acceleration where you pretend there is an egg between your foot and the fuel pedal and the objective is to keep the egg intact.

excon · Post by **excon** » Sat Dec 13, 2008 9:29 am

Paul56 wrote: What happens upon normal acceleration away from the light?

...I'm talking about the kind of acceleration where you pretend there is an egg between your foot and the fuel pedal and the objective is to keep the egg intact.

Isn't that what you're supposed to do?!

phazeneon · Post by **phazeneon** » Sun Dec 14, 2008 7:08 pm

well, normal acceleration is fine no problems, just when i come across an eg, ek, eclipse, rsx, ef, dc, and etc. it's like it gets cold feet and doesnt want to. and no its not wheel spin... prolly, cheap wires, but ive had them one for quite awhile with RC9's

yellowpatrol · Post by **yellowpatrol** » Mon Dec 15, 2008 2:42 pm

I might have a similar problem. Usually happens in 2nd or 3rd, but mine is MTX. If you floor it sometimes nothing happens, and then it slowly picks up after about 2 seconds. It's like N/A lag.

excon · Post by **excon** » Mon Dec 15, 2008 3:34 pm

it might be your wheels... you have 17" wheels. The weight is toward the outside of the wheel and needs more energy (or gas) to get it moving. I know it's not much, but the stock srt wheels and aftermarket 17" wheels are pretty heavy compared to a stock wheel...

This is by no means a solution to the problem and doesn't explain your problem much, but it's a start.... Think of it like putting 18" wheels that weigh 30 lbs a piece (plus tires) on a Honda CRX with only a 1.4 L engine making 96 hp... FAIL.

yellowpatrol · Post by **yellowpatrol** » Mon Dec 15, 2008 3:47 pm

FYI Mine does it with the 15s on.

Donkeypuncher · Post by **Donkeypuncher** » Mon Dec 15, 2008 5:34 pm

When was the last time you flushed the trans fluid and changed the filter? Plugs and wires are always a good place to start. I would suggest switching to the copper ngk v-power plugs, they seem to work much better.

I'm leaning more toward the plugs and wires. Usually they will cause sluggish performance in the low rpms, especially on an auto since you can't rev and drop the clutch.

INVUJerry · Post by **INVUJerry** » Mon Dec 15, 2008 5:38 pm

Plugs and wire, and strangely enough air filter. Before I did the filter last in my 05 when I'd launch from 5k, it would spin, but bog. Now from 4K it'll spin, and I picked up 2 mpg.

Donkeypuncher · Post by **Donkeypuncher** » Mon Dec 15, 2008 6:34 pm

I always forget to mention the air filter. I guess it's something I consider general maintenance like airing up the tires or refilling the washer fluid.

yellowpatrol · Post by **yellowpatrol** » Mon Dec 15, 2008 7:10 pm

Don't know about the other guys but I've got a semi-new air filter: changed it a few months ago, fresh tranny fluid, new plugs and wires. I did get the cheap air filter, but would that be enough to cause this?

Post by **occasional demons** » Mon Dec 15, 2008 11:01 pm

I doubt it, but just run around the block with out it. If it cures the problem, reinstall, and go get a good one. Your MAP sensor could be going. Check the TPS with an ohmmeter to see if it is increasing smoothly. An analog one is best for this if you can find one. The MAP could be tested if you have a hand vacuum pump, but IDK what the values should be. IIRC the higher the vacuum, the higher the output voltage.

SOKADAO954 · Post by **SOKADAO954** » Tue Dec 16, 2008 1:22 am

same here i couple of months ago my car would do this when i turned out of my house making a righ like the car feels as if the wheels was spining shakes etc for like half a second now it started doing it often its weird what u guys think PLEASE HELPPPP LOL
its weird to describe what happens

phazeneon · Post by **phazeneon** » Tue Dec 16, 2008 5:29 pm

thanks for the input, im prolly gonna tune it up this weekend. and take DonkeyPuncher's advice with the copper ngks. thanks guys

phazeneon · Post by **phazeneon** » Fri Dec 19, 2008 7:50 pm

well, the weather has been quite cold for awhile. it just rained and snowed here in vegas, so i pulled off the CAI and ran short ram. The thing is that the Cold Air pipe had a big gash on it (prolly gonna buy another one or just weld or tape closed). i also, recently replaced my o2 sensor with a bosch universal (the one you have to cut wires to connect to the harness). Now it's running fine.

SOKADAO954, Check your engine codes to see if anything pops up, i had a bad problem with my o2 sensor for awhile so i think it was just that. now, the engine doesnt have "cold feet" against them hondas... lol

SOKADAO954 · Post by **SOKADAO954** » Fri Dec 19, 2008 10:41 pm

phazeneon wrote:well, the weather has been quite cold for awhile. it just rained and snowed here in vegas, so i pulled off the CAI and ran short ram. The thing is that the Cold Air pipe had a big gash on it (prolly gonna buy another one or just weld or tape closed). i also, recently replaced my o2 sensor with a bosch universal (the one you have to cut wires to connect to the harness). Now it's running fine.

SOKADAO954, Check your engine codes to see if anything pops up, i had a bad problem with my o2 sensor for awhile so i think it was just that. now, the engine doesnt have "cold feet" against them hondas... lol

yep i will try tomorow sense i off work thank u so much for the helphopefully works for me !!

t3neon · Post by **t3neon** » Wed Apr 01, 2009 4:23 pm

wow i'm glad i found this thread.

my 00 mtx has exactly the same symptoms.

on a launch and in second gear(all at WOT)
the car will hesitate noticably and then an around 3000rpm all bets are off and it pulls like it should.
i'm definatly looking into some new oxygen sensors now since i've suspected this problem for a while now.
thanks

Swordfish2Cowboy · Post by **Swordfish2Cowboy** » Wed Apr 01, 2009 5:00 pm

Powerband? My car hates anything below 2100RPM, and doesn't really start to move until about 3000.

Fr0z3nMechanix · Post by **Fr0z3nMechanix** » Wed May 20, 2009 12:58 am

Yeah I'm having the same problem.... Does anyone know what the problem is? I'm really hoping it's not the tranny cuz I don't want to have to fork over that kind of cash to have that fixed... I might as well buy a new car for what i bought my neon for.

sullivan · Post by **sullivan** » Sat May 23, 2009 12:12 pm

ok i had the same problem, check your grounds near the headlights. one of mine was loose and my car was doing the same damn thing.... might help

lilnicko11 · Post by **lilnicko11** » Mon May 25, 2009 12:43 pm

i'd say fix up/ check all the cheap things like fluids, plugs, wires, coil, etc. if that doesnt change anything it could be a sensor going bad. maybe Crankshaft position sensor. I had some delay where the car would seem to pause but it was mostly in 2nd and 3rd gear only at certain rpm's. many people on here told me CPS.....

2GN.ORG

problems at launch

problems at launch

Re: problems at launch

Re: problems at launch