E90 335i shudder under acceleration at 38mph

Red335iguy · 08-05-2018, 12:08 PM

I have a 2008 e90 335i with 120k miles. It has a shudder under acceleration but its only at a certain speed, 38 mph. Doesn't matter wht gear, 2nd, 3rd, and 4th, all at the same speed. Only at that speed also. Its more intense depending on how hard I'm accelerating but only at 38 mph. Ive done some checks on the driveshaft as much as i can without full disassemble. Any ideas what it can be. Ive read into other threads but none have the same symptoms as this.

Hyper_545i · 08-06-2018, 02:57 PM

Steptronic or manual?

I have the same issue on my 545i. Apparently it is related to shift solenoids going bad in the mechatronics. Did you check your transmission fluid to make sure it is full?

Red335iguy · 08-07-2018, 05:38 PM

Steptronic. I haven't checked the fluid but will this weekend.

GoRomeo · 08-07-2018, 05:54 PM

Quote:

Originally Posted by Red335iguy

I have a 2008 e90 335i with 120k miles. It has a shudder under acceleration but its only at a certain speed, 38 mph. Doesn't matter wht gear, 2nd, 3rd, and 4th, all at the same speed. Only at that speed also. Its more intense depending on how hard I'm accelerating but only at 38 mph. Ive done some checks on the driveshaft as much as i can without full disassemble. Any ideas what it can be. Ive read into other threads but none have the same symptoms as this.

I would check for codes first, then check your coils. you can start with that...

08-05-2018, 12:08 PM	#1
Red335iguy Red335iguy 0 Rep 2 Posts Drives: 2008 BMW 335i Sedan Join Date: Mar 2018 Location: Atlanta Ga iTrader: (0)	E90 335i shudder under acceleration at 38mph I have a 2008 e90 335i with 120k miles. It has a shudder under acceleration but its only at a certain speed, 38 mph. Doesn't matter wht gear, 2nd, 3rd, and 4th, all at the same speed. Only at that speed also. Its more intense depending on how hard I'm accelerating but only at 38 mph. Ive done some checks on the driveshaft as much as i can without full disassemble. Any ideas what it can be. Ive read into other threads but none have the same symptoms as this.
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08-06-2018, 02:57 PM	#2
Hyper_545i Private 11 Rep 99 Posts Drives: 545i Join Date: Oct 2008 Location: . iTrader: (0)	Steptronic or manual? I have the same issue on my 545i. Apparently it is related to shift solenoids going bad in the mechatronics. Did you check your transmission fluid to make sure it is full? __________________ M-Tech Aero Kit with Custom Quad Diffuser ACS Rear Spoiler, ACS Roof Spoiler Quad Magnaflow Exhaust,AFE Intake, Sprint Booster
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08-07-2018, 05:38 PM	#3
Red335iguy Red335iguy 0 Rep 2 Posts Drives: 2008 BMW 335i Sedan Join Date: Mar 2018 Location: Atlanta Ga iTrader: (0)	Steptronic. I haven't checked the fluid but will this weekend.
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