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Intermittent starting

Tiny
ART DOG
  • MEMBER
  • 2001 BMW 740
  • 4.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
My car model is 740il. I have a problem starting after cranking, have new starter a few months no issues, new battery, alternator, etc. Changed camshaft sensor due to code after replaced code cleared no new codes but problem still there. After car is off for one to two hours it becomes hard to turn over just cranks. Starts in morning after off in garage it is weird! Fuel relay? All help appreciated.
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Wednesday, December 20th, 2017 AT 11:16 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

This sounds like a classic crankshaft angle sensor failure which is located down on the bellhousing on the passenger's side.

Here is a guide to give you an idea of what you are in for when doing the job.

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

Here is the location for your car (below)

Please let us know what happens.

Cheers, Ken
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Friday, December 22nd, 2017 AT 4:45 PM

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