My transmission threw up today

ybbiz34 · 11-23-2007, 08:17 PM

I was at a stoplight today and nobody was around so I thought I'd mash the pedal as soon as the light turned green to have a little fun. Instead of getting a surge of smooth and linear power like I'm used to feeling, the car lurches forward violently and stops abruptly, whipping my head back, and as I start to ease off the gas, the same thing happens again, until I take my foot completely off the gas and begin to coast. No warning lights, and no problems the rest of the way home. Temperature was about 35 degrees, the car was adequately warmed up, and I had been driving the car fairly hard up to that point. Any idea as to what the hell happened?

!Xoible · 11-23-2007, 08:21 PM

that's interesting. i've had a couple of incidents like that with my G35. kinda weird. one time i almost called AAA to haul me

Arustik1 · 11-23-2007, 08:35 PM

MT or AT?

BMdblU · 11-23-2007, 08:52 PM

^ sounds like an AT to me

PresaMat · 11-23-2007, 08:55 PM

sounds like a fuel pump

sambonator · 11-23-2007, 08:56 PM

Quote:

Originally Posted by ybbiz34

I was at a stoplight today and nobody was around so I thought I'd mash the pedal as soon as the light turned green to have a little fun. Instead of getting a surge of smooth and linear power like I'm used to feeling, the car lurches forward violently and stops abruptly, whipping my head back, and as I start to ease off the gas, the same thing happens again, until I take my foot completely off the gas and begin to coast. No warning lights, and no problems the rest of the way home. Temperature was about 35 degrees, the car was adequately warmed up, and I had been driving the car fairly hard up to that point. Any idea as to what the hell happened?

Did you turn off your Dynamic Stability Control and Dynamic Traction Control?

ybbiz34 · 11-23-2007, 09:03 PM

Sorry, it is an automatic transmission. I didn't have DTC or DSC turned off.

This isn't the first time it has happened. It happened ONLY one other time, in June, less than a month after I got the car. Whenever I drive the car, I drive it pretty hard (within reason) and usually never have any problems whatsoever.

I hope it is not a fuel pump. What happened doesn't seem consistent with descriptions of fuel pump malfunctions.

ex-poster · 11-23-2007, 10:39 PM

This very well could have been tire slip on the white painted lines at the intersection.... Happens to me from time to time as well, in my E90 as well as in my truck.

Was it wet out at all? That will make the lines even more slippery.

I've gotten this even without DSC activating. Next time this happens, look down to see if your DSC light is flashing. It goes off pretty quick so you can miss it if you don't look for it right away.

ybbiz34 · 11-24-2007, 12:15 AM

Quote:

Originally Posted by smithrh

This very well could have been tire slip on the white painted lines at the intersection.... Happens to me from time to time as well, in my E90 as well as in my truck.

Was it wet out at all? That will make the lines even more slippery.

I've gotten this even without DSC activating. Next time this happens, look down to see if your DSC light is flashing. It goes off pretty quick so you can miss it if you don't look for it right away.

Come to think of it, there was a lot of accumulated tire rubber on the road at the spot, but it was bone dry outside.

11-23-2007, 08:17 PM	#1
ybbiz34 Brigadier General 672 Rep 4,959 Posts Drives: 2023 330i M Sport Join Date: Jul 2007 Location: USA iTrader: (1)	My transmission threw up today I was at a stoplight today and nobody was around so I thought I'd mash the pedal as soon as the light turned green to have a little fun. Instead of getting a surge of smooth and linear power like I'm used to feeling, the car lurches forward violently and stops abruptly, whipping my head back, and as I start to ease off the gas, the same thing happens again, until I take my foot completely off the gas and begin to coast. No warning lights, and no problems the rest of the way home. Temperature was about 35 degrees, the car was adequately warmed up, and I had been driving the car fairly hard up to that point. Any idea as to what the hell happened?
	Appreciate 0 Tweet Quote

11-23-2007, 08:21 PM	#2
!Xoible Banned 837 Rep 46,029 Posts Drives: .... Join Date: Nov 2006 Location: . iTrader: (4) Garage List 2008 M3 [4.00] 2007 335i [9.00] 2008 528i [8.00] 2006 Infiniti - G35 ... [8.00]	that's interesting. i've had a couple of incidents like that with my G35. kinda weird. one time i almost called AAA to haul me
	Appreciate 0 Quote

11-23-2007, 08:35 PM	#3
Arustik1 HYEPWR 100 Rep 2,868 Posts Drives: E46 M3 Join Date: Oct 2007 Location: Mesa, AZ iTrader: (3) Garage List 2007 E92 335i [0.00]	MT or AT? __________________ 2002 330ci Titanium Silver / Gray 2005 X5 3.0i Black Sapphire Metallic / Black 2002 M3 Laguna Seca Blue / Black 2001 M5 Jet Black / Black
	Appreciate 0 Quote

11-23-2007, 08:52 PM	#4
BMdblU Brigadier General 152 Rep 3,983 Posts Drives: F80 Join Date: Oct 2007 Location: Toronto iTrader: (2)	^ sounds like an AT to me
	Appreciate 0 Quote

11-23-2007, 08:55 PM	#5
PresaMat Major 35 Rep 1,169 Posts Drives: 67 GT500,69 Boss 429, 335i Join Date: Sep 2006 Location: Houston,TX iTrader: (0) Garage List 1967 Shelby Mustang ... [0.00]	sounds like a fuel pump __________________ -Mat Tuned E92 335, Riss Racing downpipes! And hopefully over 400RWHP!!
	Appreciate 0 Quote

11-23-2007, 09:03 PM	#7
ybbiz34 Brigadier General 672 Rep 4,959 Posts Drives: 2023 330i M Sport Join Date: Jul 2007 Location: USA iTrader: (1)	Sorry, it is an automatic transmission. I didn't have DTC or DSC turned off. This isn't the first time it has happened. It happened ONLY one other time, in June, less than a month after I got the car. Whenever I drive the car, I drive it pretty hard (within reason) and usually never have any problems whatsoever. I hope it is not a fuel pump. What happened doesn't seem consistent with descriptions of fuel pump malfunctions.
	Appreciate 0 Quote

11-23-2007, 10:39 PM	#8
ex-poster Lieutenant 19 Rep 482 Posts Drives: 2000 328, 2006 330 Join Date: Jul 2005 Location: Chicago Burbs iTrader: (0)	This very well could have been tire slip on the white painted lines at the intersection.... Happens to me from time to time as well, in my E90 as well as in my truck. Was it wet out at all? That will make the lines even more slippery. I've gotten this even without DSC activating. Next time this happens, look down to see if your DSC light is flashing. It goes off pretty quick so you can miss it if you don't look for it right away.
	Appreciate 0 Quote