2003 BMW 318i Air Intake Housing

2003 BMW 318I
66,500 MILES
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BLAIR78
  • MEMBER
  • 1 POST
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
Dec 3, 2013 at 5:06 AM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,411 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.
Dec 3, 2013 at 8:28 AM
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