Engine wont start

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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Friday, January 16th, 2015 AT 12:58 PM

42 Replies

Tiny
CADIEMAN
  • MEMBER
Hello,

This sounds like the crankshaft angle sensor is not working here is a guide that will walk you through the steps and the location for your car below.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

and this guide can helps as well.

https://www.2carpros.com/articles/car-cranks-but-wont-start

The sensor is in the side of the block near the oil pan. Check out the diagrams (Below). Please let us know what happens.

Cheers
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Friday, January 16th, 2015 AT 1:08 PM
Tiny
GLENN1980
  • MEMBER
Ok. Fuel pump has no power
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Friday, January 16th, 2015 AT 1:19 PM
Tiny
CATAFINA
  • MEMBER
The fuel pump will have no power if the crankshaft sensor is bad.
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Friday, January 16th, 2015 AT 1:32 PM
Tiny
GLENN1980
  • MEMBER
If I run a wire to the fuel pump will it run?
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Friday, January 16th, 2015 AT 1:37 PM
Tiny
CADIEMAN
  • MEMBER
I don't think so are you getting a new sensor?
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Friday, January 16th, 2015 AT 2:04 PM
Tiny
GLENN1980
  • MEMBER
I have one on order should be here next week.
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Friday, January 16th, 2015 AT 3:08 PM
Tiny
CADIEMAN
  • MEMBER
Okay let us know.
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Friday, January 16th, 2015 AT 3:15 PM
Tiny
GLENN1980
  • MEMBER
Got the sensor today you hit it on the money the engine started right up and runs great! I love this site.
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Friday, January 16th, 2015 AT 3:32 PM
Tiny
CADIEMAN
  • MEMBER
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help

Cheers
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Friday, January 16th, 2015 AT 5:45 PM
Tiny
JVARGAS0610
  • MEMBER
  • 2003 BMW 745
BMW 745 2003 wont start but all the lights are on
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Friday, October 19th, 2018 AT 5:04 PM (Merged)
Tiny
DR. HAGERTY
  • MEMBER
The car should be taken to your BMW service provider. The complexity of the vehicle makes it a practical impossibility to have this issue resolved through cyberspace.
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Friday, October 19th, 2018 AT 5:04 PM (Merged)
Tiny
JAYNUM
  • MEMBER
  • 2003 BMW 745
  • 4.4L
  • V8
  • RWD
  • AUTOMATIC
  • 182,000 MILES
Replaced bent exhaust valve reassembled everything now car will not start only cranks. What could I have over looked or need to do? No stored codes only one pending po365 and po367 came up once then went back to po365 pending. Transmission fail-safe drive moderately showed up on dash.
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

We must start by checking the compression is see if the valve timing is close.

Here are a guide to get you started.

https://www.2carpros.com/articles/how-to-test-engine-compression

Please let us know what happens.

Cheers, Ken
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
WEFXUM
  • MEMBER
  • 2003 BMW 745
  • V8
  • 2WD
  • AUTOMATIC
  • 11,503 MILES
Replaced crank sensor due to a fault code=no help. Tested for power to fuel pump=no power but do have ground. Am helping a friend and I work on MBZ but at a loss with BMW. Looking if a relay or fuse to fuel pump? Where could I locate a wire diagram for this car.
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
DR. HAGERTY
  • MEMBER
Without Autologic or some form of BMW software, you are shooting blind. The complexity of those cars makes it a practical impossibility to do the type of repairs you are attempting especially without specific knowledge of the E65 electrical/mechanical structures.
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
TJATKINSON
  • MEMBER
  • 2003 BMW 745
  • V8
  • 2WD
  • AUTOMATIC
  • 75,898 MILES
Replaced leaking valve covers on both sides and the engine cranks but does not start. All connections are good but dtc p0335 ( crank sensor malfunction ) is present in the DME. I replaced the crank sensor and the engine still does not start. Any suggestions?
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
DR. HAGERTY
  • MEMBER
You have the special tools to do valve cover gasket replacement?
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-1
Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
PACHY
  • MEMBER
  • 2005 BMW 745
  • V8
  • AWD
  • AUTOMATIC
  • 80,000 MILES
My car was running just fine I parked it and came back on the morning and it would not start. I have no idea what it can be I'm getting fuel but no spark. It just cranks and cranks but won't start.
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Hello,

Please check for spark first here is a guide.

https://www.2carpros.com/articles/how-to-test-an-ignition-system

If no spark I would change the crankshaft angle sensor. Here is a guide to help with diagrams below to help you see how it is on your car.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Check out the diagrams (Below). Please let us know what happens.

Cheers
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Friday, October 19th, 2018 AT 5:05 PM (Merged)
Tiny
DR. HAGERTY
  • MEMBER
I had this problem with my car and the crankshaft sensor fixed it perfect only cost $78.00
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Friday, October 19th, 2018 AT 5:05 PM (Merged)

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