losing power / Air flow Noise when accelerating - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 07-25-2004, 12:13 PM
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Has anyone had this problem were the car does not pick up properly ( feels like it loses power ) when you step on the gas and at the same time you hear some kind of pinging / air flow noise from the engine. The engine temp also goes up after a while !!!!!!
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#2 (permalink) Old 07-26-2004, 11:31 AM
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That sounds similar to a problem I had with another car. The cause turned out to be a clogged catalytic converter.
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#3 (permalink) Old 08-23-2004, 05:20 PM
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Hi there. I had a similar problem with my 1990 525i, the car started fine but as I went along the road the engine started to struggle and the revs would not go above 2000rpm. I pulled over and tried to warm the engine up a little by revving a little but it was still struggling, as though it was going to cut out.

After about 5 mins it started acting normally and I continued without any more problems. I didnt hear any unusual noices though.

I saw one reply to a similar problem saying that the inlet manifold may be cracked

Any ideas?
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#4 (permalink) Old 08-29-2004, 09:43 AM
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1983 528i wouldn't accelerate as good as usual and started sounding a lot louder than usual, mechanic said it sounded like a truck. The muffler had to be replaced.
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#5 (permalink) Old 08-29-2004, 11:44 PM
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If converter is ok check your hoses for maniflod leaks that hissing noise may well be air leak under the manifold mine just recovered from that one
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#6 (permalink) Old 08-31-2004, 08:12 PM
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d3ity will become famous soon enough d3ity will become famous soon enough
Same problem on the 6 series. Try this

You see all those hoses on your air intake. Replace them. 50 bucks and an hour.

Vaccum lines...get those too. always helps preformance to have fresh ones.

Check for any cracks in your air intake. Check your air filter too.

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