Cranks but does not start

2005 CHEVROLET IMPALA
170,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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DARRELL GILLETT
  • MEMBER
  • 1 POST
engine cranks but no start. scanner shows no codes.
Sep 4, 2020 at 6:18 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

If it happened all at once, chances are either you lost fuel pressure or ignition spark. The crankshaft position sensor can fail, cause you to lose spark, and never set a code. Take a look through this link:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Here is what I suggest to start. See if the engine starts using starting fluid and then stalls. If it does, then we know it is a fuel related issue. If it doesn't try to start at all, then we need to check for spark to the plugs.

Here is a link that will explain the most common causes of a crank no start condition. Take a look through it as well:

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

Let me know what you find or if you have any questions. Once we determine if it is a fuel or ignition related issue, we will get you up and running again.

Take care and I'll watch for your reply.

Joe
Mar 6, 2021 at 4:52 AM
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