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Old 11-24-2011, 02:09 PM
Andrew*Debbie's Avatar
Andrew*Debbie Andrew*Debbie is offline
resU deretsigeR
Location: Anglesey
Join Date: Jul 2004
Posts: 6,257
Mein Auto: Leaf Tekna
Why would the fuel pump turn on when you open the drivers door?

I don't know anything about the 128i but on most cars I've looked at, the fuel pump relay energizes with the ignition. On some cars, there is an air pump that runs after you switch the car off. That pump is used to check for fuel system vapor leaks.

Last edited by Andrew*Debbie; 11-25-2011 at 06:51 AM.
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