Intermittent starting

2001 BMW 740
110,000 MILES • 4.0L • V8 • 2WD • AUTOMATIC
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ART DOG
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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.
Dec 20, 2017 at 11:16 AM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
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
Dec 22, 2017 at 4:45 PM
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