28D7 Generator Communication Fault? |
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Jules8
Newbie Joined: 27-April-2011 Location: Woking Status: Offline Points: 10 |
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Posted: 27-April-2011 at 14:19 |
Last summer my car kept stalling for a split second about a mile out from home. No particular reason; not breaking, stopping, accelerating, cold weather, hot weather. A local BMW mechanic tested the alternator and said that the power was fluctuating. A squillion pounds later I had a new alternator. The problem didn't go away and now the computer comes up with a "28DR" fault that two different mechanics have failed to clear. The only thing I've found on the internet is that it might be a generator communication fault or something. And yes, the damn car still stalls occasionally but usually after about 200 miles and then several times in fairly quick succession. Any ideas? I'm loathe to go to a dealership and pay another squillion pounds.
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Peter Fenwick
Bavarian-Board Contributor Joined: 27-August-2003 Location: Lost somewhere in time... Status: Offline Points: 6484 |
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I'm afraid your only option may be to go to a main dealer or a BMW speciallist who has all the appropriate diagnostic equipment. I've never heard of a 28DR fault before. |
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Entering an age of Austerity and now driving a Focus Diesel.
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Jules8
Newbie Joined: 27-April-2011 Location: Woking Status: Offline Points: 10 |
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Oh dear! Both mechanics have all the BMW diagnostic programmes on their computers but it doesn't seem to help. Maybe if I get a bonus at work .....
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Jules8
Newbie Joined: 27-April-2011 Location: Woking Status: Offline Points: 10 |
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I am a twit. The fault is 28D7, not 28DR. Anyone know that one? |
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jetsetwilly2000
Really Senior Member II Joined: 10-December-2003 Location: Cambridgeshire Status: Offline Points: 701 |
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Hi Jules, welcome! What car have you got?
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E90 M3 DCT, E46 330d Touring, VW T5 wannabecamper
Previous: Disco 3 TDV6, 2x E34 540i6, E34 535iS |
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Jules8
Newbie Joined: 27-April-2011 Location: Woking Status: Offline Points: 10 |
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Greetings. A 318i (may it rust in hell). It has cost me a fortune. I thought BMWs went on for ever but this is 9 years old and has been a problem for 4 years now. Sorry. It's driving me insane stalling all the time, even if it is for a second. Particularly good uphill in the fast lane of the motorway. |
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bmwcare
Really Senior Member I Joined: 02-June-2006 Location: Galway Status: Offline Points: 321 |
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These have what's called a BSD interface (communications line) between the Alternator and the DME. I'm assuming the fault relates to this.
As stated above - get it checked by a properly equipped Indy or go to a dealer. Also, if the alternator previously fitted was 'rebuilt' there may be an issue there. I've had many problems like that with Mercedes alternators. Kind Regards, Eddie. |
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BMW & Mercedes Specialist.
Galway & Surrounding Areas. www.bmwcare.com www.mercedescare.com All BMW models covered including E60/E90/F01/F10 with flash programming/CIP/coding as required |
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Jules8
Newbie Joined: 27-April-2011 Location: Woking Status: Offline Points: 10 |
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You, Eddie, are a treasure. Oh for the olden days when there was a lead loose or you needed wiggle the spark plugs. The first alternator came with the car and the replacement was a genuine BMW part for a squillion pounds. I shall bit the bullet and take it into the dealer or similar. Many thanks Jules |
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