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Old 06-27-2013, 01:12 PM   #1
Bob325ci
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Random stalling

Hi all,
I have a 2001 325ci convertable and two weeks ago it stalled four times in the space of three days.car will start up straight away then stall when pulling away.does this about five times then its fine(nightmare in traffic)
Thought problem sorted itself out as been fine for the last two weeks but today it did it again.
No lights come on dash and runs fine any other time.
Any ideas folks?
Cheers
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Old 06-27-2013, 01:22 PM   #2
Shaun1970
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Hi Bob you getting any codes? This is possibly Intake and Camshaft sensors being faulty. Firstly I would check all intake hoses and work back wards. Some say MAF but 9/10 its hoses split or the sensors. Let us know how you get on.
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Old 06-27-2013, 01:30 PM   #3
Bob325ci
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Thanks for reply,
No codes showing up
Couldn't find any leaks so I'll look into replacing cps
Cheers Bob
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Old 08-19-2013, 01:29 PM   #4
328iM52
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When u say no codes, have you had diagnostics from your indie??
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Old 08-19-2013, 01:32 PM   #5
328iM52
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....also, does it turn over a number of times before it fires or does it start straight away? Whats the mileage mate?
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Old 08-19-2013, 04:05 PM   #6
Bob325ci
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Always starts up but very fat when trying to rev it,normality two or three goes and it's back to normal. It's been at my mechanics since last week as it was getting worse, he seems to think that it's both my cam sensors!
Cars done 136000 miles
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Old 08-19-2013, 11:20 PM   #7
328iM52
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Very possible but also should look at fuel delivery, when you start the car, have someone stand next to the passenger door behind the drivers seat, you should be able to hear the fuel pump prime. It may sound strange but if its particularly noticable, as in too loud, give it a couple of smacks, not too aggressive but just enough to upset it. Fuel pumps will not show codes, fail intermitently and are a general pain in the ass. I promise you these engines are meant to be bullet proof so your right, sensor fail ( which should show up on diagnostic) or fuel delivery i.e in my case the fuel pump - hard to diagnose. Infact, on mine it was inlet cam and crank sensor fail also.

Funnily enough, you have exact same mileage as me also....

Last edited by 328iM52; 08-20-2013 at 02:12 AM.
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Old 08-19-2013, 11:47 PM   #8
328iM52
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Was there any noticable power loss when driving?? If it is both cam sensors then i would imagine you would notice power loss, as if the engine is choked - the sensors measure the position of the cams inorder to tell spark plugs when to fire. I would have thought you would have some ignition trouble if it was both sensors...

Sorry for the multiple posts, just throwing some ideas out there...
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Old 08-20-2013, 05:50 AM   #9
Bob325ci
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Had loss of power after starting then seemed fine.no codes showed up.
Mechanics changed fuel filter and said its looking like both cam sensors.it does struggle to start sometimes but other times it just fires up and go's.
Really annoying as its so random.he's also check for air leaks and found none.
Any ideas yourself.
Cheers
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Old 08-20-2013, 05:58 AM   #10
328iM52
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Really sounds like fuel pump mate, mines in the garage today for the same thing, same symptoms to a tee. Really hard to diagnose, like i said above, its an intermittent fault until it completely fails and your left in the crap house. Fuel delivery from gas tank to the injectors, bet u find the problem there... Let me know how it goes
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Old 08-20-2013, 06:01 AM   #11
Bob325ci
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Will do
Thanks for your help
Bob
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Old 08-20-2013, 03:52 PM   #12
328iM52
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Bob,

Just an update, had her back this afternoon, had to wait til i finnished work to drive her, what a difference!! Full power and response restored, smooth gear change, and a complete beast when u ask for it. Drives like new and i rekon will easily go on for another 140k! Mate i cant tell u how pleased i am. Just a heads up, fuel pump and labour was 258, think there was another diagnostic on that tho - i havnt seen the invoice yet, cam sensor and crank sensor & diagnostic 210

Good luck!!
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Old 08-20-2013, 04:00 PM   #13
Bob325ci
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Nice 1 mate glad you got it sorted,
I'm popping over to see my mechanic tomorrow
Gonna let him know what uve had done and hopefully
I'll end up as happy as you!
Only had mine a few months so it might of been down on power
all that time without me knowing.
I'll let u know when I get her back
Bob
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Old 08-22-2013, 11:20 AM   #14
Bob325ci
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Hi mate,
Just got her back.new intake and exhaust camshaft sensors plus a vacuum hose.
Good as new! Seems like a totally different car!
Seems we're both happy
Bob
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Old 08-22-2013, 02:47 PM   #15
Shaun1970
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Quote:
Originally Posted by Bob325ci View Post
Hi mate,
Just got her back.new intake and exhaust camshaft sensors plus a vacuum hose.
Good as new! Seems like a totally different car!
Seems we're both happy
Bob
That's good news Bob, glad she fit and well again!
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Old 08-23-2013, 01:29 AM   #16
328iM52
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Haha!! Good news, seems you got away without too much spent, amazing the effect these sensors have on the running condition of the car, seems a common fail on e46s. Took mine on 200 mile round trip day after she came out of garage after fuel pump replaced. Still feel she could be tighter, so im DIY ing spark plugs, intake boots, DISA, valve gaskets and vanos seals. Once im happy with the engine, i can start looking at body kits.. Woop!
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