E90 Acceleration Issues

carmichael28 · 11-04-2022, 11:18 AM

Hi folks, so I picked up an e90 with a few minor issues, has 97,000 miles. There is a vibration coming from the middle or front of the car when the car is under load especially if going uphill without momentum, mostly at 2000rpm. The violent vibration goes away if I let go of the gas, or if I give it a lot of gas. I'm wondering if it's the transfer case, vanos, or axle/suspension issue. I know I have shot control arm bushings. No 4x4 lights or transmission lights. the OBD at autozone gives me code 5F77 DME error

Suvorovo · 11-04-2022, 05:23 PM

Check for play in the driveshaft center support bearing. If you know your control arm bushings are bad, replace those first as necessity and then see if the issue continues. At 97k, I doubt your transfercase is bad and maybe the code is caused by worn fluid. Change the fluid & reset oil wear (ISTA+/Good Scan tool) since it's about time.

Can you provide details at what engine speed the code was triggered?

carmichael28 · 11-17-2022, 12:05 PM

I'm not sure what speed triggered any lights. The car will sometimes throw a light and start idling rough after hard revs on the highway and I guess goes in "limp" mode since I can't get up to speed. I did buy a good scanner and got some of the following codes and reset them for now.

11-04-2022, 11:18 AM	#1
carmichael28 New Member 4 Rep 14 Posts Drives: BMW e92 Join Date: Nov 2021 Location: New Jersey iTrader: (0)	Hi folks, so I picked up an e90 with a few minor issues, has 97,000 miles. There is a vibration coming from the middle or front of the car when the car is under load especially if going uphill without momentum, mostly at 2000rpm. The violent vibration goes away if I let go of the gas, or if I give it a lot of gas. I'm wondering if it's the transfer case, vanos, or axle/suspension issue. I know I have shot control arm bushings. No 4x4 lights or transmission lights. the OBD at autozone gives me code 5F77 DME error
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11-04-2022, 05:23 PM	#2
Suvorovo Lieutenant 280 Rep 524 Posts Drives: Creaky e90 330xi 6MT Join Date: Feb 2022 Location: New Jersey iTrader: (0)	Check for play in the driveshaft center support bearing. If you know your control arm bushings are bad, replace those first as necessity and then see if the issue continues. At 97k, I doubt your transfercase is bad and maybe the code is caused by worn fluid. Change the fluid & reset oil wear (ISTA+/Good Scan tool) since it's about time. Can you provide details at what engine speed the code was triggered? Last edited by Suvorovo; 11-04-2022 at 05:30 PM..
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11-17-2022, 12:05 PM	#3
carmichael28 New Member 4 Rep 14 Posts Drives: BMW e92 Join Date: Nov 2021 Location: New Jersey iTrader: (0)	I'm not sure what speed triggered any lights. The car will sometimes throw a light and start idling rough after hard revs on the highway and I guess goes in "limp" mode since I can't get up to speed. I did buy a good scanner and got some of the following codes and reset them for now. Attached Images
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