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2003 BMW 318i Air Intake Housing

Tiny
BLAIR78
  • MEMBER
  • 2003 BMW 318I
  • 66,500 MILES
Hi

I have a crack/hole in the air intake housing. My car has rev's from 1000rpm to 1500 rpm when idle and when driving it is very jerky (Speeds up slows down when trying to maintain a constant speed). I have been getting mixed results if the hole in the air intake housing is the cause of the problem.

The car had been for a replacement header unit for the radiator and the problems had started after that.

Thanks
Blair
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Tuesday, December 3rd, 2013 AT 1:06 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,741 POSTS
All fresh air going into the engine has to go through the mass air flow sensor to be measured so the engine Computer will command the correct amount of fuel. If air can sneak in even a tiny crack by a loose clamp, there won't be any fuel to go with it. Typically that will cause a high idle without a corresponding increase in power, but it can also result in a hesitation or stumble.
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Tuesday, December 3rd, 2013 AT 4:28 PM

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