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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 02-08-2013, 11:22 AM   #1
Jemmacandili
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Difficulty to start up the engine ( help )

Hi guys I have 2001 325ci it really drive good, but unfortunately this past few days I'm really having hard time starting it up, I went to autozone to check my battery and alternator their system says it good. Worst thing happened to me is my car is shutting down off automatically , like I'm at the stop light then suddenly it will turn off.

What do you think is the problem? Please help me guys!
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Old 02-08-2013, 12:13 PM   #2
NukeMiller
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Was Autozone able to read your check engine codes?
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Old 02-08-2013, 04:40 PM   #3
Jemmacandili
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Was Autozone able to read your check engine codes?
Yes codes are

P0444

P0440

P0313

P0344

Please help me thank you!
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Old 02-08-2013, 05:11 PM   #4
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looks like a loose gas cap and a bad intake cam sensor.
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Old 02-09-2013, 10:02 PM   #5
NukeMiller
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Originally Posted by Jemmacandili View Post
Yes codes are

P0444 - purge control valve failure

P0440 - Purge Valve Failure

P0313 - Running Lean

P0344 - Cam Position sensor

Please help me thank you!
The purge valve is located on your cylinder head..access to it requires removing you intake filter box....

Bad Cam sensor is a bad cam sensor...P0334 is for the intake cam...replace with OEM and you should be fine...neither part should break your pocket book and are relatively easy to replace
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Old 02-09-2013, 10:04 PM   #6
NukeMiller
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Originally Posted by VALMONT View Post
looks like a loose gas cap and a bad intake cam sensor.
I've had the loose gas cap and never recieved the purge valve error...I always got the EVAP small leak error...have you experienced different?
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Old 02-09-2013, 10:58 PM   #7
Jemmacandili
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Originally Posted by NukeMiller View Post
The purge valve is located on your cylinder head..access to it requires removing you intake filter box....

Bad Cam sensor is a bad cam sensor...P0334 is for the intake cam...replace with OEM and you should be fine...neither part should break your pocket book and are relatively easy to replace
I think I need to change camshaft sensor cause my car just shuts off by him self I think camshaft sensor is the reason. Can't give that electric power. Correct me I I'm wrong?
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Old 02-09-2013, 11:21 PM   #8
NukeMiller
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Originally Posted by Jemmacandili View Post
I think I need to change camshaft sensor cause my car just shuts off by him self I think camshaft sensor is the reason. Can't give that electric power. Correct me I I'm wrong?
Yes..the camshaft sensor is definately the one turning your car off
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Old 02-09-2013, 11:22 PM   #9
Jemmacandili
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I've had the loose gas cap and never recieved the purge valve error...I always got the EVAP small leak error...have you experienced different?
Yes cause my car is always shutting off by himself it always happens when I stopped then the engine is little but slower there's a big difference my mechanic told me its the camshaft sensor
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