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Discussion Starter · #1 ·
Hi, my son's 2010 E81 turns over all the time, however intermittently it turns over but will not fire!
New plugs, new crankcase position sensor, comps are good and no codes. We've told to replace the fuel relay, but have been told that this petrol model doesn't have one?? Should we be looking at changing the Fuel Pump Control Module?
Trouble is he and his car are in Cornwall and I'm 300 miles away!
If anyone can throw any light, it would be very much appreciated.

(y)Thanks Koolflyer
 

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Looking online I'm not certain your car has a fuel pump relay. It should have a fuse (in the glove box) and a control module behind the rear seat. Locations in following link.

Have you had BMW diagnostics applied e.g. INPA or ISTA+ ? These applications are likely to be able to test individual components such as the fuel pump even if no codes are stored.
 

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Discussion Starter · #3 ·
Thanks for your reply. Some say the petrol does have a fuel relay, but others say it just has a fuse and fuel pump control module (EKP). We're not sure and Sytner BMW don't appear to know either. Marvellous! We'll get the BMW dealer to check the individual components, such as the fuel pump etc. Cheers KF
 

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Might be worth searching for BMW specialists Cornwall (rather than dealers) if you want to save a bit of money. They will have the same diagnostics.
 

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Discussion Starter · #5 ·
Might be worth searching for BMW specialists Cornwall (rather than dealers) if you want to save a bit of money. They will have the same diagnostics.
Thanks, we did try that but one of them couldn't even look at it for 5 weeks! I will try the other again, however they didn't know what the problem was as nothing showed up on their diagnostics. Trouble is, it only fails to start when hot, and that's not every time either, which seems to make detecting the fault even more difficult. When cold it's fine.
 
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