My car have been making a woop-woop sound(about 2 woop per second). Anyone know what it is?There is no warning lights. So doing a diagnosis might not help. (called a few mechs)No loss in power or anything. Last thing I did was service the car about 2 months ago but the id!ot mech put in 20W-50 oil in the engine. Could it be that?Anyone know what might be the issue?Main issue is I am in KK and there are no good mechs around(not going back to the previous mech)(also anyone know any reliable BMW mechs in KK?)I am driving a E39 '99 Double Vanos M52.Thanks
Car making woop-woop noise. Help!
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rahizwan
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BMW M52
From Wikipedia, the free encyclopedia
BMW M52 engine
M52TUB25 from an E46 323Ci (125 kW/245 Nm)
Manufacturer BMW, Bayerische Motoren Werke AG
Production 1994–2001
Predecessor BMW M50
Successor BMW M54
Class Straight-6
The BMW M52 is a Straight 6 piston engine. Displacement ranges from 2000 cc to 3200 cc. It is a DOHC 24-valve engine, originally introduced with VANOS Variable Valve Timing. It replaced the BMW M50 engine in 1994 and was replaced in 2001 with the BMW M54 engine. The world market engine used Nikasil lined aluminium cylinders instead of a cast iron sleeves used in the American market engine. The reason for this is Nikasil is eroded by the higher sulfur content fuel used in America.
A Technical Update or M52TU version in 1999 added Double-VANOS and other modifications.
From Wikipedia, the free encyclopedia
BMW M52 engine
M52TUB25 from an E46 323Ci (125 kW/245 Nm)
Manufacturer BMW, Bayerische Motoren Werke AG
Production 1994–2001
Predecessor BMW M50
Successor BMW M54
Class Straight-6
The BMW M52 is a Straight 6 piston engine. Displacement ranges from 2000 cc to 3200 cc. It is a DOHC 24-valve engine, originally introduced with VANOS Variable Valve Timing. It replaced the BMW M50 engine in 1994 and was replaced in 2001 with the BMW M54 engine. The world market engine used Nikasil lined aluminium cylinders instead of a cast iron sleeves used in the American market engine. The reason for this is Nikasil is eroded by the higher sulfur content fuel used in America.
A Technical Update or M52TU version in 1999 added Double-VANOS and other modifications.
dzuljazz2001
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Bishop;509585 said:
:listen:can you pin-point where this "woop woop" sound coming from? noise happens during idling or during driving only or both?:listen:
have you checked your tyres area and under carriage? Broken plastic covers under carriage can cause noise too...Happened to me before..my left side cover broken, wind noise can be heard and there was one time, installed not so good, the tyre was rubbing it.
but urs also got sound when idling...
While idling, press your accelerator and see if the 'woop woop" sound increase in speed as you go higher RPM?
but urs also got sound when idling...
While idling, press your accelerator and see if the 'woop woop" sound increase in speed as you go higher RPM?
Bishop;510397 said:
Before you do anything drastic, you need o confirm that it is due to the air vane.
Switching the aircon would not help to determine the problem cos it only off the aircon compressor.
try to play with the recirculation button, demister button etc. If you heard the same kind of sound, then at least you know it is due to the air vane in the Air Handling Unit (AHU).
I am not sure how you to change the filter for E36 but for:-
E36 - It under the steering column
E46 - After the firewall near the wipers.
Honestly, if the sound is due to the vanes, I would just ignore and live with it. It is quite a big job to open up the dashboard to access to the AHU..
