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No start

Tiny
DCRAIG10004
  • MEMBER
  • 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 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
  • 2 POSTS
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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