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1991 BMW 525 Idling Issue

Tiny
KEENJEFFREY
  • MEMBER
  • 1991 BMW 525
  • 6 CYL
  • 2WD
  • MANUAL
  • 174,000 MILES
I repaired a crack in the air intake hose (from the filter to the engine and alternator) and now when idling, the car seems to be gasping for air. A 'friend' mechanic I believe adjusted the idle before I repaired the crack. Also, while driving, when I take the car out of gear, I hear a high pitched "rrrrruuuuunnnna na na na". If I put the car back in gear it goes away, it only lasts for a few seconds, but it happens everytime I take the car out of gear or am coasting.
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Monday, June 9th, 2008 AT 6:11 PM

2 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Can you tell us where this noise is emanating from?
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Monday, June 9th, 2008 AT 7:28 PM
Tiny
FORTUNATO747
  • MEMBER
  • 5 POSTS
A BMW is a fine tuned & unforgiving machine. It sounds like the computer is trying to compensate for any adjustments your "friend" made. You might want to go to a reputable dealer/shop BMW specific and have your mixture recalibrated.
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Sunday, June 22nd, 2008 AT 11:58 AM

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