compact ti non starter
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 3 Series
Forum Discription: This forum will deal with any issues on the BMW 3 Series (E21, E30, E36, E46, E90, E91 & E92)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=40862
Printed Date: 01-May-2024 at 22:26
Topic: compact ti non starter
Posted By: ian 2008
Subject: compact ti non starter
Date Posted: 07-April-2008 at 13:11
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I have a 51 plate 3 series compact ti. it totally fails to start and the recovery guy says the crankshaft sensor could be faulty but his computer thingy also listed cam sensor 'a' not working as well. He said the injectors were not switching on which could indicate a crankshaft sensor failure or immobiliser problem. The car just cut out completely when at a standstill and that was it. has anybody else had similar problems? are any of these common failures? Any help would be much appreciated...are these parts expensive? and where is the crankshaft sensor located, somewhere reasonable? |
Replies:
Posted By: Rhys
Date Posted: 07-April-2008 at 20:42
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Welcome to the forum, I'll move this into the 3 series tech forum. Sounds like an E46 variant.  ------------- V reg Rustbucket Merc C220 Cdi estate J Reg Saab 900i 16v '63 Ford Anglia 105e deluxe R reg Honda PC50 moped.. No BMW as yet... |
Posted By: Nigel
Date Posted: 07-April-2008 at 22:03
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Mate just had this on his 7 series, cam sensor was at fault in that case ------------- Best Wishes Nigel |
Posted By: < FORZA WEST
Date Posted: 08-April-2008 at 21:48
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The sensors are quite a common fault.... Exhaust,inlet and crank are all the same part no. and they tend to fill with oil. We tend recomend they are all replaced and you will likely need the DME reprogrammed for the new sensors. |
Posted By: brian03
Date Posted: 25-March-2010 at 15:30
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I have the same problem. Does anyone know the easiest way to replace the crankshaft sensor on my 2002 316 Compact.1.8. Its right at the back of the engine Thanks Brian
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Posted By: < FORZA WEST
Date Posted: 25-March-2010 at 16:09
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The easiest way to get to the N42 Crank sensor is to remove the inlet manifold....this will give you direct access to it. You can try and fumble around underneath but by the time you have got past the brackets etc you would have removed the manifold and refitted it. when replacing the sensor make sure only 1 rubber seal is fitted...quite a few people forget to remove the old one, if you do then at 3000 rpm the engine dies as it can no longer see the crank.. |
Posted By: brian03
Date Posted: 26-March-2010 at 12:18
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Thanks forza will give it a try on the weekend. let you know how i get on |
Posted By: MBW1
Date Posted: 29-March-2010 at 21:34
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Crank sensor. The cam sensor wouldn't cause it to stop, just run poorly.
Changing the crank sensor on the N42 Valvetronic engine is a complete and utter bitch requiring inlet manifold removal. Only ever fit a genuine BMW crank sensor - these are such a ballache to do, you don't want to do it twice. ------------- I don't have a carbon footprint. I drive everywhere. |