IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

IS250 hard "jerk" when put in D

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Old 07-09-10, 08:23 PM
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GFM2Fitty
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Default IS250 hard "jerk" when put in D

well I read some posts about jerking on stops and shaking when idling and I understand that part, but I noticed that every time when I *cold* start the car and right when I put the gear in D, the car jerks pretty hard. This doesn't happen when the car is all warmed up though. Is this normal? I'm sorry if this is another FAQ, but I just wanna make sure before my warranty is over. Thanks guys.
Old 07-09-10, 09:24 PM
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JoshIS408
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LOL you need wait atleast a mintue or two from cold start. You will hear when the car tone gets lower. Dont just slam it in dive and goo. Thats ur tranny man
Old 07-09-10, 09:24 PM
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new.era.13
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i have the same problem. can somebody chime in? i also just change my rear differential fluid and same thing. even if i warm up the car, still has the problem.
Old 07-09-10, 09:57 PM
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brociouz
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Originally Posted by JoshIS408
LOL you need wait atleast a mintue or two from cold start. You will hear when the car tone gets lower. Dont just slam it in dive and goo. Thats ur tranny man
Are you saying you don't put your car in drive until it warms up for a minute or two?
Old 07-09-10, 10:06 PM
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idling to warm up does nothing. the best way to warm up your car is to drive it. don't WOT right away though. light throttle for 5 mins.
Old 07-09-10, 10:08 PM
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JoshIS408
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When i cold start it sounds hella loud,. then after a minute or so the sound settles, thant6s when i put the car into drive or reverse. I never jerk. and yeah WOT is bad, so is revs on cold start.
Old 07-09-10, 10:11 PM
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DajonDondo
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i would wait 2 minutes.
Old 07-09-10, 10:18 PM
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brociouz
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You don't have to let your car sit there in idle, that's just wasting gas and time for no reason. Just keep your RPMs low until it's warmed up and you're fine.

I shift into drive immediately and have never had a problem with jerking. OP, I would tell your dealer about this problem.
Old 07-09-10, 11:52 PM
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panda327
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noo .. on cold starts the revs are higher .. if you just slam that in to D it will make a clunk sound because there is more pressure .. just let your car idle till the rev drops and put it in D
Old 07-09-10, 11:53 PM
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Hoovey689
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Originally Posted by GFM2Fitty
well I read some posts about jerking on stops and shaking when idling and I understand that part, but I noticed that every time when I *cold* start the car and right when I put the gear in D, the car jerks pretty hard. This doesn't happen when the car is all warmed up though. Is this normal? I'm sorry if this is another FAQ, but I just wanna make sure before my warranty is over. Thanks guys.
Your not referring to the "jerking feeling/lurch" when on the brakes and put in drive are you? That's normal because power is going through the drivetrain. When put in neutral you disconnect it.

You seem to have two options, A. let the car idle a bit longer from now on and/or B. take it to the dealer. GL.

Last edited by Hoovey689; 07-09-10 at 11:56 PM.
Old 07-10-10, 12:49 AM
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IS-J
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Putting your car into gear while it is cold (1400rpm) is pretty much like neutral dropping it, very bad for tranny, just let it warm up a minute or two. Pretty much let the RPMs drop to under 1000rpm and you'll be good.
Old 07-10-10, 02:06 AM
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Fizzboy7
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I get a jerk, but only when cold, in manual mode, and coming to a stop below 3 mph or leaving from a stop and lifting off the brake. Dealer said all was normal. Since it only happens when in manual mode, I have to conclude it's something with the computers.

The owner's manual actually says not to let the car warm up. As people have said, just drive it lightly and everything settles down.
Old 07-10-10, 03:23 AM
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GFM2Fitty
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Hmm seems like not many of you are experiencing this...I'm going to take it to the dealer
Old 07-10-10, 03:28 AM
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panda327
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no... i experience this too .. i think dealer gonna tell u the exact same thing :P at least mine did

let us know if your dealer has a different story
Old 07-10-10, 07:18 AM
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The only way to not have this "hard jerk"....LOL, sorry....is to let the transmission fluid warm up. You can always have weird behavior from the transmission if the fluid is cold. My suggestion is to simply let the car idle for a minute or two...


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