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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 06-21-2014, 10:45 AM   #1
allen1978
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Join Date: Jun 2014
Location: Australia
Posts: 6
My Ride: E46 318
2002 E46 318 wont start!! help needed

Hi Guys

need some help

owned this car over 10 years from new

last week tried to start the car.

it wont start up. it will crank , but just wouldnt fire up

been reading a lot on forum.

checked fuel pump fuse

Checked relay

Replaced new fuel pump

Fuel was full

Battery was fully charged

but car still wont start

any suggestion?

cheers

Allen
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Old 06-21-2014, 11:43 AM   #2
David McMahon
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My Ride: 15/Dec/98 E46 328i
My car won't start either so I know the feeling!

I've been reading though this link, if you've not already seen.

http://forum.e46fanatics.com/showthread.php?t=1011677
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Old 06-22-2014, 08:44 AM   #3
lszlszx
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If it's a crank/no start and there is fuel, check for spark.
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Old 06-23-2014, 09:14 AM   #4
allen1978
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Hi

put on scanner

got two code

2764 Secondary air pump relay

2862 VVT- Power supply

Should i change both of them? and suggestion

cheers
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Old 06-23-2014, 02:22 PM   #5
lszlszx
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No, don't throw parts at it, just follow simple trouble shooting steps.

First check for fuel at the fuel rail to confirm fuel supply.

Then check for spark, post 62 in my no start thread and report back!
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Old 06-23-2014, 07:46 PM   #6
allen1978
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Quote:
Originally Posted by lszlszx View Post
No, don't throw parts at it, just follow simple trouble shooting steps.

First check for fuel at the fuel rail to confirm fuel supply.

Then check for spark, post 62 in my no start thread and report back!
Hi mate

thanks

should i change air pump relay? where is it locate?

also with VVT. check the voltage?

cheers
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Old 06-23-2014, 08:14 PM   #7
lszlszx
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Quote:
Originally Posted by allen1978 View Post
2764 Secondary air pump relay
2862 VVT- Power supply

Should i change both of them?
Quote:
Originally Posted by allen1978 View Post
should i change air pump relay? where is it locate?


Quote:
Originally Posted by lszlszx View Post
No, don't throw parts at it, just follow simple trouble shooting steps.
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Old 06-23-2014, 08:26 PM   #8
dknightd
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http://forum.e46fanatics.com/showthread.php?t=1011677

should be stickied IMO
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Old 06-23-2014, 08:29 PM   #9
allen1978
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Quote:
Originally Posted by lszlszx View Post


ok ok.

will check it
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Old 06-24-2014, 12:03 AM   #10
David McMahon
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Also note that the S.A.P is just an air pump that pumps air into the engine to help the cats get upto temperature. The SAP on my car had a broken vac line running near it.
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Old 06-24-2014, 06:56 AM   #11
allen1978
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Quote:
Originally Posted by lszlszx View Post
No, don't throw parts at it, just follow simple trouble shooting steps.

First check for fuel at the fuel rail to confirm fuel supply.

Then check for spark, post 62 in my no start thread and report back!
Hi

any guiding how to check fuel at fuel rail?

i dont have test light, but i got snap on voltage tester.

are they work?
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Old 06-24-2014, 07:28 AM   #12
David McMahon
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You can press the Schrader valve on the fuel rail, but ideally a fuel pressure tester is needed.

M43 Engine Item's 14 (remove) and item 13 (press lightly, take fire precautions)

http://realoem.com/bmw/showparts.do?...37&hg=13&fg=15


N42 Engine Item2 (remove)

http://realoem.com/bmw/showparts.do?...47&hg=13&fg=15

N46 engine (later ones) remove Item 2

http://realoem.com/bmw/showparts.do?...47&hg=13&fg=15
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Old 06-30-2014, 09:52 AM   #13
allen1978
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Hi Guys

been checked all the things for the car and couldnt find anything wrong.

i put scanner on again and just pull the data out and i crank the car. it start and runs perfect

car back to normal and start all the time.

there is no code at all

not sure whats going on last few weeks with the car
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