Q: Loud roaring sound from right lower side when in drivers seat 2001 BMW 540i

asked by on

My car when up to temp all of a sudden gets a roaring sound in the front right when in the drivers seat and kills the car. The serpentine belt had came off while making that sound and the power steering pump brackets were broke so i changed it then i changed the water pump and now it did it again went into trana fail safe mode then now has no power and wont turn back on.

My car has 190000 miles.
My car has an automatic transmission.

Hi there - I suspect something driven by the serpentine belt has seized, putting a shock load on the belt, and snapping it. Could have been the AC compressor or compressor clutch (lower right front of the engine), power steering pump, serpentine belt idler/tensioner pulley (bearing). This failure leads you with no power steering assist, or alternator. It is possible the thrown belt also damaged the transmission fluid lines going to the radiator (trans fluid cooler), with loss of fluid - causing the "Trans Pgm" msg. I would recommend a thorough engine inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Loud roaring sound from right lower side when in drivers seat 2001 BMW 540i

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Won't go over 25 and found antifreeze all over but cannot find where it's leaking from.

Hi there. Check all around the engine compartment for the coolant leak. Look at the radiator, over flow tank, radiator hoses, water pump, heater hoses, intake, core plugs (freeze plugs), and the heater core. One of those areas could be...

Q: Rough idle/Check Engine light/Cylinder # 2 misfre

Hello, thank you for writing in. The spark plugs may absolutely be the cause of your misfire. Even if only one cylinder is registering a misfire at this time, you should replace all of them at the same time. The...

Q: Would a broken AC compressor cause the serpentine belt to break? 2009 Saturn Outlook

Hi there, yes, the air conditioning compressor is capable of breaking the serpentine belt a couple of ways. If the AC compressors seizes while operating, the shock load can snap the serpentine belt. If the AC clutch bearing seizes while...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...