2003 BMW 745 electric problem

Tiny
GLENN1980
  • MEMBER
  • 2003 BMW 745
  • 4.4L
  • V8
  • RWD
  • AUTOMATIC
  • 10,100 MILES
No power at the fuel pump and no spark at the spark plug crank but no start fuel pump work can hear it run
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have the same problem?
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No
Friday, January 16th, 2015 AT 12:58 PM

30 Replies

Tiny
CADIEMAN
  • MEMBER
WILL IT START ON STARTING FLUID?
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Friday, January 16th, 2015 AT 1:08 PM
Tiny
GLENN1980
  • MEMBER
No. Have tried it already
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Friday, January 16th, 2015 AT 1:10 PM
Tiny
CADIEMAN
  • MEMBER
CK. FOR POWER AT THE COILS AND RETEST FOR SPARK.
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Friday, January 16th, 2015 AT 1:12 PM
Tiny
GLENN1980
  • MEMBER
Ok. Fuel pump has no power
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+5
Friday, January 16th, 2015 AT 1:19 PM
Tiny
GLENN1980
  • MEMBER
But fuel pump fuse is good
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Friday, January 16th, 2015 AT 1:20 PM
Tiny
GLENN1980
  • MEMBER
Is there a relay fuse for the fuel pump. If so where
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Friday, January 16th, 2015 AT 1:21 PM
Tiny
CATAFINA
  • MEMBER
Have you check for spark if not do so and let us know-also you can run a wire straight to the fuel pump and see if it turns On
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Friday, January 16th, 2015 AT 1:32 PM
Tiny
GLENN1980
  • MEMBER
Ran a wire to the fuel pump
. It runs
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Friday, January 16th, 2015 AT 1:37 PM
Tiny
GLENN1980
  • MEMBER
There is no power at the fuel pump or the coils
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Friday, January 16th, 2015 AT 1:40 PM
Tiny
CADIEMAN
  • MEMBER
U WILL NEED TO CHECK FOR VOLTAGE AT THE FUEL PUMP FUSE LOOKS GOOD ISN'T GOOD ENOUGH THEN FIND THE RELAY AND MAKE SURE IT GETTING POWER WITH THE KEY ON
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Friday, January 16th, 2015 AT 2:04 PM
Tiny
GLENN1980
  • MEMBER
The Fuel Pump Fuse Is Getting power. But Don Know Where the fuel Pump relay Switch is
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Friday, January 16th, 2015 AT 2:10 PM
Tiny
CADIEMAN
  • MEMBER
Reach on yahoo and you will find the relay ad the pump fuse 25amp in the relay panel.
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Friday, January 16th, 2015 AT 2:56 PM
Tiny
CADIEMAN
  • MEMBER
Sorry research yahoo
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Friday, January 16th, 2015 AT 3:04 PM
Tiny
GLENN1980
  • MEMBER
I have its giving me 2 different locations.. Trunk by the battery and under glove compartment
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Friday, January 16th, 2015 AT 3:08 PM
Tiny
CADIEMAN
  • MEMBER
U NEED TO LOOK AND SEE WHERE IT IS USE THE DIAGRAMS TO HELP U.
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Friday, January 16th, 2015 AT 3:15 PM
Tiny
GLENN1980
  • MEMBER
Ok. If it's not the fuel relay switch any other suggestions
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Friday, January 16th, 2015 AT 3:32 PM
Tiny
CADIEMAN
  • MEMBER
SEE IF THE RELAY IS INGAUGEING IF YES AND IT'S SENDING POWER TO THE PUMP ON PIIN 30 ON THE RELAY. IF YES U WILL NEED TO FIND WHERE THE WIRE IS OPEN GOING TO THE PUMP. BUT DON'T GET AHEAD OF YOURSELF U WILL NEED TO CK. VOLTAGES WITH A TEST LIGHT OR VOLT METER.
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Friday, January 16th, 2015 AT 5:45 PM
Tiny
GLENN1980
  • MEMBER
Hello again I checked to see if the relay is ingauging/sending power and it's not so any suggestions
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Sunday, January 18th, 2015 AT 11:50 AM
Tiny
CADIEMAN
  • MEMBER
Did u ck. The fuse in the relay panel? Did u try swapping the relay?
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Sunday, January 18th, 2015 AT 12:45 PM
Tiny
GLENN1980
  • MEMBER
I swapped the relay out with a new one and its still not engauging.. Use test light on all 5 piins and test light lite up on piin 87
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Sunday, January 18th, 2015 AT 12:50 PM

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