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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 01-27-2007, 05:29 PM   #1 (permalink)
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Cool 1990 525 M20 dieing

I have a 1990 525 m20 and when it is below 36F and the car is out of the blue mark on the temp gauge it tries to die at a complete stop. The rpms go down and the engine revs itself to prevent killing the engine. About two months ago it was doing the same thing and I had the fuel filter replaced and was VERY cloged. I only use Shell or EXXON gasoline could it be possible that it is plugged. Before I had the fuel filter changed I ran two bottle of techron through my fuel system seperately so the tank should be fairly clean. Help!!! I hope sometiung is not damaging my engine. Although I live in Savannah, Georgia and it rarely gets below 55F especialy this winter! Thanks for any help.
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Old 01-27-2007, 07:09 PM   #2 (permalink)
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Well I unpluged my Mass Airflow Sensor and it runs Great!!!!!! Now I just hope I can clean it. Hopefuly it needs to be cleaned and not replaced I heard they were very expensive. Can I clean it? I will hope I can find a thread that tells you.
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Old 01-28-2007, 11:21 AM   #3 (permalink)
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Maf....

You could try cleaning it with carb cleaner, but I have got a feeling you are going to have to replace it.

Try ebay......
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Old 02-09-2007, 08:30 PM   #4 (permalink)
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I cleaned it and it was working fine then it was acting like it wasn't pluged in for a night, with the check engine light on and the limp home mode and all. The next day on my way to school once the car got past the blue line for the temp gauge it just popped back into normal operation and has been finr ever since. Hopefuly it was just a piece of dirt on the sensor and got pushed off or something.
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Old 02-10-2007, 11:08 AM   #5 (permalink)
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fingers crossed............

Hopefully it's sorted now....
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