A/C - Howl or Whistling Noise
Group 64Heating and
Air Conditioning
Bulletin Number
64 08 93 (3836)
Woodcliff Lake, NJ
July 1993
Product Engineering
SUBJECT:
Air Conditioning Howl/whistle, R-134a
MODELS:
1993 MY E30 Convertible (R-134a Equipped)
Situation:
Since 1993 model year production, all E30 convertible vehicles have been equipped with air conditioning systems charged with the refrigerant R-134a.
We have received a few reports of whistling or howling noises coming from the evaporator area when the compressor cycles on.
Correction:
In the case of a customer complaint, replace the suction (low) side hose with the special hose below.
Parts Information:
Description Part Number
Suction Tube, E30 R-134a 64 53 9 066 449
Warranty Information:
Part and labor reimbursable under the terms of the applicable BMW New Car Limited Warranty.