Panic! Low Oil Pressure Warning. 540i - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 04-12-2005, 10:43 AM
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Yesterday, I gave the engine compartment a good clean with engine cleaner and then water etc.

Today, I was pottering along to the shops and 'Bong' on comes the 'STOP - low oil pressure' warning. I stopped and checked the oil - ok full. Switched on and this time the 'oil can' just glowed a dull red - no warning. Tried higher revs - no change. Got home and stopped. After a minute or so 'Bong'!

I'm pretty sure I upset something with the cleaning and this is a duff sensor (why no proper pressure gauge?). I've never heard of sudden partial loss of oil pressure. I got sprayed with oil peeping in the filler cap so there's plenty about.

Question is do I risk driving it to the garage or spend out on getting it transported there at huge expense?
Thanks

BMW E39 540i 1997 83K
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#2 (permalink) Old 05-01-2005, 07:35 PM
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I agree that it sounds like you blew the sensor loose with the water pressure.
However; if you think the tow charge is a huge expense, you ain't seen nothing if the engine goes oil starved.
I'd play around a bit in the garage and see if you can locate the sensor- May be a wiggle of a wire fixes your problem. If no, I think I'd tow- No questions asked- it's cheap insurance.

1998 540i
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#3 (permalink) Old 05-02-2005, 12:24 PM
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Go buy yourself AAA, and have them tow it... AAA is like 50/year and offer free towing up to 5 miles(or 100 miles if you get their platinum membership).. and its like a couple dollars every mile thereafter.

saved my ass more then once when I forgot my wallet and had to have my car towed.

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