Car stalling on first start of the day - BMW 3-Series (E90 E92) Forum

dassub · 12-04-2012, 04:57 PM

UPDATE: Dealer diagnosed it all morning. Eccentric shaft sensor. Out of warranty. Approved the repair, as the car can't even be started at the moment.

Not sure what's happening here, but out of nowhere, the car is stalling when starting it in the morning.. No CEL being thrown.

The battery was changed last month, so it has been super strong lately, when slow cranks were everywhere before that.

If I turn off the a/c, it starts up a bit easier.

Weirdly enough, once it's started, it runs like a clock.. no rough idle or bad mileage.. hmm..

I've had the the valve cover gasket replaced, along with all the bolts at some point last year, since a few of the bolts snapped.

Any ideas?

Eccentric shaft sensor? I was told it looked slightly oily during the valve cover job before.
Bad gas? It was a station I hadn't used before. I will use Redline fuel injector cleaner once I am running low and fill up.

dassub · 12-05-2012, 10:13 AM

Is there a way to prime the fuel pump a second time before trying to start the car?
In my old Audi, if I pushed the key right before the crank position, it would prime the fuel pump (you can hear it).
In this car, do you simply put the key in, and push start without the clutch?

12-04-2012, 04:57 PM	#1
dassub Lieutenant Drives: '06 325i 6MT Join Date: May 2009 Location: Toronto Posts: 557 iTrader: (1) Garage List 2006 E90 BMW 325i [0.00] 1988 Audi 90 Quattr ... [0.00]	Car stalling on first start of the day UPDATE: Dealer diagnosed it all morning. Eccentric shaft sensor. Out of warranty. Approved the repair, as the car can't even be started at the moment. Not sure what's happening here, but out of nowhere, the car is stalling when starting it in the morning.. No CEL being thrown. The battery was changed last month, so it has been super strong lately, when slow cranks were everywhere before that. If I turn off the a/c, it starts up a bit easier. Weirdly enough, once it's started, it runs like a clock.. no rough idle or bad mileage.. hmm.. I've had the the valve cover gasket replaced, along with all the bolts at some point last year, since a few of the bolts snapped. Any ideas? Eccentric shaft sensor? I was told it looked slightly oily during the valve cover job before. Bad gas? It was a station I hadn't used before. I will use Redline fuel injector cleaner once I am running low and fill up. Last edited by dassub; 12-06-2012 at 12:10 PM.
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12-05-2012, 10:13 AM	#2
dassub Lieutenant Drives: '06 325i 6MT Join Date: May 2009 Location: Toronto Posts: 557 iTrader: (1) Garage List 2006 E90 BMW 325i [0.00] 1988 Audi 90 Quattr ... [0.00]	Is there a way to prime the fuel pump a second time before trying to start the car? In my old Audi, if I pushed the key right before the crank position, it would prime the fuel pump (you can hear it). In this car, do you simply put the key in, and push start without the clutch?