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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 05-03-2009, 10:48 AM   #1 (permalink)
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E34 540 running bad

Hi, I'm new at this forum.
I'm from The Netherlands and own a E34 540I 94.
My car developed the following problem.
At revs above 4500 the engine cuts completely out like there is a rev limiter. It picks up at 4000 rpm again, and when throttle is kept down it will do this continuously. It does this in every gear and also when in park.

Please help

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Jeroen
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Old 05-03-2009, 11:27 AM   #2 (permalink)
OMFG another one!?
 
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I believe I'd start with an engine code reading.
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Old 05-03-2009, 12:03 PM   #3 (permalink)
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No fault codes found
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Old 05-03-2009, 12:13 PM   #4 (permalink)
OMFG another one!?
 
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Is the original engine management chip in place? Have there been any modifications to any engine systems?
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Old 05-03-2009, 12:23 PM   #5 (permalink)
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No, engine and DME are all original.
Problem developed as intermittent first. sometimes it would develop full revs. But it is a constant problems since a couple of weeks.
I have noticed the following however.
The car smells to petrol when idling cold.
There is a very small coolant leak from the thermostat. There is some green residue near the crank sensor.

Rgds

Jeroen
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Old 05-03-2009, 12:26 PM   #6 (permalink)
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I'm thinking that the residue around the crank sensor may be interfering with its reading.
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Old 05-03-2009, 12:37 PM   #7 (permalink)
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Cleaned the sensor, problem NOT solved. Still the same. No residue at the flywheel either.
Rgds

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