Coil pack

F

flybobbie

Elite
 Stourbridge
My business partner came in this morning saying that a warning light was on the dash (couldn't describe it).
So I went and had a look.
Started car, but no warning lights.
Revved the engine and straight away running rough. First thought coil pack. Why should I think this on a 2011 23i 12k car? :o
So I had a spare in my boot just for such a moment. :D
Bonnet up, engine cover off, matter of trial and error.
Pulled out no1, came to fit my replacement and the triangular plug wouldn't fit in. :(
Took a while to realise the original Bosch coil had centrally place key at the bottom of the triangle and my replacement one was offset.
The replacement was NGK brand. Would seem the site I bought it off was listing the wrong part for 23i.
So I removed a coil from my car and found that no4 coil was duff.

So first thought go buy genuine.
Check with local stealer parts dept. first.
Part no. at hand phoned.
Dept. busy would call me back, they had the car reg.
Never called back.
So phoned again.
"Sorry sir we do not stock that part"
"What, a part that's always seems to be going wrong on BMW's and they don't stock the part!"

So managed to buy from elsewhere for £20, Bosch part, but equivalent part no.
In fact bought 4, one for me and replaced the three rears 4,5,6.
All well and car running great.

Then the dealer called back.
The part number I gave them has been amended to a new part no. because the previous part, they were getting lots of faults. My partner that answered asked, if the coils were faulty, why haven't the cars been called back. Especially now her car is out of warranty.
And how much these coil...£55 each.
 
There's plenty of confusion about the coils. Bosch revised the original coils with a newer part number then BMW changed from using Bosch coils to Delphi which have a metallic coat rather than plastic. They will still supply the revised Bosh parts when carrying out warranty replacements on N54 engines but if you call in to order them out of pocket it's the Delphi ones that they will supply. The N54, N55 and N20 all seem to use the same coils but the BMW catalogue will say they aren't interchangeable.

I think it was heat that was killing the old coils so hopefully the new ones with their metal coating will fair better.

I had one go at 40k miles and assumed it would be a cheap £20 jobbie from the dealer so was going to order one to save the hassle of taking the car in for a warranty replacement but they quoted £50 so it ended up just being done at BMW's expense.

£20 is a good price for a proper Bosch part. Where did you order them from?
 
What annoys my partner is to be told they, the coils are a known issue after her going back to BMW on four occasions.
Twice with stuck roof, vanos bolt call back, then 02 sensor failures, all below 10k miles. Now out of warranty.
 
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