2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

problem with first gear????

Old Jun 18, 2009 | 12:03 PM
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From: houston
Red face problem with first gear????

sometimes when i take off in first gear around 2k rpms the car starts jerking back and forth then i quickly upshift to 2nd. is it just me not letting off the clucth wrong or the car. i believe i read someone else was having this problem too but couldnt find the post.

do anyone of you guys/ and girls experience this
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Old Jun 18, 2009 | 12:05 PM
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do you let the car warm up?
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Old Jun 18, 2009 | 12:10 PM
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im guna go with just u
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Old Jun 18, 2009 | 12:12 PM
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Originally Posted by jaygo7007
sometimes when i take off in first gear around 2k rpms the car starts jerking back and forth then i quickly upshift to 2nd. is it just me not letting off the clucth wrong or the car. i believe i read someone else was having this problem too but couldnt find the post.

do anyone of you guys/ and girls experience this
It's the clutch. You are riding it wrong. Just gotta figure it out. Both my manual cars did it.
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Old Jun 18, 2009 | 12:14 PM
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From: houston
i let the car warm up. i bet its just me. maybe one day ill get it right
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Old Jun 18, 2009 | 12:46 PM
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The throttle is exceptionally sensitive on mine when it's either cold or I've just started the car and am driving away. I've gotten used to it but the first few times it did it I thought I was going to walk away with whiplash...you'll adjust .
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Old Jun 18, 2009 | 02:14 PM
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mine does it when i first start it up and take off. only in 1st. it just needs to warm up i imagine
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Old Jun 18, 2009 | 04:10 PM
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^^^^^
Right, it seems if you interrupt the starting idle by driving it the engine throws a fit. I've noticed also when driving away the first few times I put in the clutch the RPMs drop below 750 then back up but after those first couple times it all levels out. I decided to wait one day to see how long the starting idle was and realised no way in hell am I doing that, it's far longer than my 2.2 ever was!
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Old Jun 18, 2009 | 04:13 PM
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Originally Posted by Permafried-
^^^^^
Right, it seems if you interrupt the starting idle by driving it the engine throws a fit. I've noticed also when driving away the first few times I put in the clutch the RPMs drop below 750 then back up but after those first couple times it all levels out. I decided to wait one day to see how long the starting idle was and realised no way in hell am I doing that, it's far longer than my 2.2 ever was!
Well these cars have that high idle at start up to burn off excessive fuel and oil.

Really cleans the car out before you run around. In the morning you should always let it run till it idles perfect.
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Old Jun 18, 2009 | 04:47 PM
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From: Tejas
It's good to let any car warm up... esp if you're super/turbocharged, because you're putting even more heat/pressure in the cylinder than normal. You gotta let those pistons/rings adjust and oil to warm up a bit to get thinner and better able to lubricate everything.

The warm, less viscous/"thinner" oil can then also get up into the bearings of your turbo better too, which will help from having early failure.

Driving it too soon or being hard on it before it's up to temp for a while is a quick way to start suffering from blow-by.

This is especially true if you've got forged pistons, since they are manufactured narrower than normal so they have more room to expand as they warm up (they expand as they warm more than cast/hypereutectic pistons do). This is also why they suffer from "piston slap" on a cold start.

Last edited by Stamina; Jun 18, 2009 at 05:04 PM.
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Old Jun 18, 2009 | 05:27 PM
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^^^agreed. Let your car warm up properly please. Even in summer let it warm up. I usually wait until coolant reaches around 140ish, boost gauge drops to 20 (unless AC is on, then 15), and idle drops to under a grand. Then I dont even think about applying boost until temp reaches 160, and no WOT until I'm at 185 degrees. Do you have to do all this, nah, but will it hurt, nah.

The car will stumble on cold startup if not warmed up, also, these clutches are funky. I have always driven manuals, with no problem, but even after16k miles on the balt, I still come close to stalling every now and then.
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Old Jun 18, 2009 | 05:47 PM
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Originally Posted by steven6870
^^^agreed. Let your car warm up properly please. Even in summer let it warm up. I usually wait until coolant reaches around 140ish, boost gauge drops to 20 (unless AC is on, then 15), and idle drops to under a grand. Then I dont even think about applying boost until temp reaches 160, and no WOT until I'm at 185 degrees. Do you have to do all this, nah, but will it hurt, nah.

The car will stumble on cold startup if not warmed up, also, these clutches are funky. I have always driven manuals, with no problem, but even after16k miles on the balt, I still come close to stalling every now and then.
I get close to stalling with the A/C. It's way worse than my 2.2L, very frustrating. It probably makes less power at idle than my 2.2L did.
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Old Jun 18, 2009 | 06:12 PM
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^^^Yep. I almost did it today with the AC on. lol. I also think it gets hard to drive this car because of the electronic throttle as well. You have almost a second delay, and when you get used to driving a cable, its hard to realize that you have to give it some throttle before you pop the clutch in this car, if you dont she falls flat.
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Old Jun 18, 2009 | 07:45 PM
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Originally Posted by steven6870
^^^Yep. I almost did it today with the AC on. lol. I also think it gets hard to drive this car because of the electronic throttle as well. You have almost a second delay, and when you get used to driving a cable, its hard to realize that you have to give it some throttle before you pop the clutch in this car, if you dont she falls flat.
I also found that with the AC on the rpm's drop wicked fast between shifts. They already drop fairly fast when the AC is off. Its like you have to shift faster with the AC on or else your rpm's will drop below where you would normally re-engage the clutch and the car will jerk as the synchros get your rpm's back up to your engine speed. I also agree that it helps to give some throttle before re-engaging the clutch, especially at low rpm's, because the response time is a bit lagged. I'm glad others are experiencing this as well, I thought it was just me.
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Old Jun 19, 2009 | 02:29 AM
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From: Tejas
Originally Posted by EcotecAddict
I also found that with the AC on the rpm's drop wicked fast between shifts. They already drop fairly fast when the AC is off. Its like you have to shift faster with the AC on or else your rpm's will drop below where you would normally re-engage the clutch and the car will jerk as the synchros get your rpm's back up to your engine speed. I also agree that it helps to give some throttle before re-engaging the clutch, especially at low rpm's, because the response time is a bit lagged. I'm glad others are experiencing this as well, I thought it was just me.
Same here too. I have to quicken my shifts and add a bit of gas to smooth out the end of the shift. I must say I like shifting without the A/C on much more.
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Old Jun 19, 2009 | 04:12 AM
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Originally Posted by jaygo7007
sometimes when i take off in first gear around 2k rpms the car starts jerking back and forth then i quickly upshift to 2nd. is it just me not letting off the clucth wrong or the car. i believe i read someone else was having this problem too but couldnt find the post.

do anyone of you guys/ and girls experience this
You're not alone... My car will buck fairly violently in first gear if I don't preempt it with a quick shift 2 second. I attribute it to the bumps in the road causing my foot to press and release the gas pedal, which starts the bucking, which makes it keep getting worse. On a smooth road it won't do it. I notice it alot more since I had my car tuned, but it definitely did it while it was stock too.
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Old Jun 19, 2009 | 05:03 PM
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I think some people are confusing the bucking from letting the clutch out too fast with the bucking from the engine not being warmed up. If you drive with the engine cold, it does run a little rough (although if you set the cruise it runs perfectly smooth! Try it - set cruise at 25 on either 3rd or 4th and it won't be rough at all). However, the bucking you get from letting the clutch out too fast is much more noticable. Just takes some time and practice to avoid it.

And yes, driving with the a/c on is a completely different experience. Ironically enough, in my ss/sc the RPM dropped much *slower* with the a/c on, while in this car it drops much faster.
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