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Suspension & Braking Forum by BimmerWorld
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Old 02-14-2013, 06:37 PM   #1
arleitiss
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Join Date: Jan 2013
Location: Dublin
Posts: 136
My Ride: 318i
Just cold start or is there something wrong with my car?

Hey, so I was driving today, I didn't drive my car for past 2 days and today I sat into it, turned on all seemed okay, I drove to work, on way to work: When fully pressing in clutch and basically coming to stop in traffic lights, without giving any acceleration the RPM needle is bouncing between 450-800 RPM, then it stops. When too long in traffic light it starts bouncing again this time I can feel car shaking a bit. There seems to be also huge power loss, when I accelerate in 2nd gear, RPM needle reaches 4000-5000 RPM, the speed is very low, about only 40-50 km/h but it was more before.

Today also I was in traffic and car just shut off, I mean engine turned off, it wasn't a stall, not something you would feel happening when stalling because of fail gear change, literally just RPM bouncing, then started going down below 500 RPM, and shut off. I turned ignition again and it started no bother. After about 15 minutes of driving, when all AC started giving heat got very warm in car (car engine warmed up) the car went alright, there was no power loss so I was madly accelerating over short distances in city to test, no problem, needle still bounces sometimes but rarely.

And it's only 8 degrees celsius outside. Any ideas?
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Old 02-15-2013, 11:17 AM   #2
arleitiss
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Join Date: Jan 2013
Location: Dublin
Posts: 136
My Ride: 318i
Okay, I went to mechanics, they said it's the Air flow meter. So that's 250 Euro including labour. It's broken so the engine was flooded with petrol which caused crappy fuel consumption, and **** performance.
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