NO START

  • Tiny
  • dcraig10004
  • 1994 BMW 540i
  • 67,000 miles

No start. No power to fuse 23(fuel pump). Have power at fuel pump relay. Replaced dme. No help.

Sunday, March 17th, 2013 AT 11:26 AM

2 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

Dme? Please explain

there should be 2 feeds to the relay. One is key on power and the other is 12 volts constant.

If there is no power to the fuse box fuse, then you may have a wiring issue at the fuse box or check fusible links

Roy

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Sunday, March 17th, 2013 AT 12:57 PM
  • Tiny
  • dcraig10004
  • Member

The DME(bmw lingo) is the ECM. It was a bad CPS. During troubleshooting I inadvertantly had the fuel pump relay and engine control relay swapped, so it still wouldnt start. Swapped them back and she fired right up. Thanks

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Wednesday, March 20th, 2013 AT 11:50 AM

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