BimmerFest BMW Forum banner
1 - 20 of 26 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter · #1 ·
Hi Guys,
just got my car back from bodyshop for touch-ups was there for approx 1 month (could have been left idleing in year for hours).
after driving car for 10 miles oil press light(red) came on for 10 seconds. drove home .light came back on. shut off car coasted home into driveway.
change oil nothing in pan.
start car no light drive 10 minutes. no light. start car in am. light on. rremove oil switch no pressure. at all.
Broken chain? stripped gear? where should I start? remove pan? front cover? anybody ever experiance anything similar. or know where to find pages from shop manual?
also have code p1397 not related though.
2000 323CIc 100 000miles
any help would be greatly appreciated.
thanks Dan.
 

·
Registered
Joined
·
483 Posts
Ummm.... no oil in pan? Was it full when you took it to the body shop?
 

·
Registered
Joined
·
483 Posts
From what I gather, he had no oil pressure, light came on . He checked the level and saw nothing on the stick, changed the oil. Let it run for 10 min. the next morning and then realized he still has no oil pressure?? I'm thinking either his pressure switch went out or the oil pump is k/o'd?? What about the vanos or separator????
 

·
ROLL TIDE!
Joined
·
23,984 Posts
From what I gather, he had no oil pressure, light came on . He checked the level and saw nothing on the stick, changed the oil. Let it run for 10 min. the next morning and then realized he still has no oil pressure?? I'm thinking either his pressure switch went out or the oil pump is k/o'd?? What about the vanos or separator????
Ahhh, makes more sense. If the pump was dead, the car would more than likely over heat with a quickness........lots of heat would build up if the oil wasn't circulating. My guess is a dead BMW oil pan sensor thingy....
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #6 ·
sorry
when I said nothing in pan I meant no metal filings or forien material. was full of oil. the reason way I stated it was at body shop was to say it sat for a while. then within 10 miles of driving it. no oil pressure, probably just coincedence. just to add one more piece to the puzzle.
thanks Dan
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #7 ·
Ahhh, makes more sense. If the pump was dead, the car would more than likely over heat with a quickness........lots of heat would build up if the oil wasn't circulating. My guess is a dead BMW oil pan sensor thingy....
didn't run long enough light went on for 15 -20 secs. went out.2-3 mins came back on shut off motor coasted up my driveway. changed oil ,nothing forigen in pan. restarted no light. drove for 5 mins still no light.ext temp dropped to 35 degrees F overnight oil probably thickened. started car light stayed on . tried again still light on. grounded connector for oil pres. switch light works(goes out) removed switch no oil pressure at switch .
 

·
Registered
Joined
·
483 Posts
Like Smolk says, with no oil pressure it's just as bad as no water pump, over heating. I'd take it in to have a mechanic look into it.
 

·
Is it Trackday yet?
Joined
·
8,975 Posts
removed switch no oil pressure at switch .
You tested the oil pressure with a manual gauge? Sounds like it...

I would not drive that car or run the engine again. The oil pumps in these cars are known to implode under certain circumstances. Sounds like yours is shot.

Search on "oil pump nut" here, fanatics, and bimmerforums and you'll see all kinds of good (bad) stuff about it. I had mine inspected a couple months ago while the oil pan was off to install a baffle. It was fine, but the mechanic slathered it with more loc-tite just to be sure.

There is a lot of labor to replace an oil pump cuz it's in the bottom of the engine. To remove the oil pan requires dropping of the front subframe, 5-6 hours of time to do it all.
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #10 ·
I will remove the pan this week and post as to what i find. the loose nut on the pump gear would explain the erratic behaviour of the pump, because a broken chain would be immediate. and a worn pump would progressively get worse before failure
thanks everybody. I have only been a member here for a couple of days but this forum has helped me find broken wires to my trunk lid. top wouldn't go down because of it. seems to be a common problem on e 46's.
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #11 ·
turns out sump was full of sludge . blocked oil pickup.and filter. cleaned oil pan and valve cover. rebuilt pump all appears fine. runs well.
 

·
BMW = Fahrvergnügen
Joined
·
447 Posts
Enough sludge to block the pickup! Yeesh! :yikes:
 

·
Registered
Joined
·
149 Posts
oil pan

danosll... how hard was it when you removed the oil pan. i think that my oil pan gasket is gone. Any info on the oil pan gasket replacement is highly appreciated :thumbup:
 

·
ROLL TIDE!
Joined
·
23,984 Posts
danosll... how hard was it when you removed the oil pan. i think that my oil pan gasket is gone. Any info on the oil pan gasket replacement is highly appreciated :thumbup:
It isn't super hard, but not for the first time DIY'er.
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #19 ·
danosll... how hard was it when you removed the oil pan. i think that my oil pan gasket is gone. Any info on the oil pan gasket replacement is highly appreciated :thumbup:
you have to drop the cross member. and my CIc conv. has a sub frame but only 6 bolts and it is aluminum very easy. but the cross member is tricky you have to support engine from above. the oil pan gasket is metal and rubber so it shouldn't be bad . if I were you. i would ,
remove sub frame (very easy). wash underneith the motor very well. make sure that the oil is actually leaking from the pan. then retorque all the oil pan bolts to see if that may cure it . good luck
 
1 - 20 of 26 Posts
Top