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Engine cranks but does not start?

Tiny
LING LING
  • MEMBER
  • 2008 CHEVROLET MALIBU
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 126,000 MILES
The car listed above is an Ltz model.

Okay, so my car cranks but won’t run.
Battery.
Fuses & Relays.
Spark Plugs.
Coil Packs.
No Lock Pass.
No Check Engine Light.
OB2 Scan Shows No Codes (I've used 3 different scanners).
Starter.
Fuel Pump.

I can’t figure out the issue.
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Friday, October 27th, 2023 AT 11:59 AM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
How does it sound when cranking over, does it sound normal? I am wondering if the engine has compression, this is why I ask. Also, will the engine run on starting fluid? This could tell us if the ignition system is working, you can help by checking for spark.

This video will show you how:

https://youtu.be/baq_aEWNQ0Y?si=lGvUrJYBBxHZnX1L

Please check out this guide as well:

https://www.2carpros.com/articles/car-not-running-advanced

Let us know what happens and please upload a video of the engine cranking so we can see what's going on.
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Friday, October 27th, 2023 AT 4:14 PM
Tiny
LING LING
  • MEMBER
  • 2 POSTS
It sounds like it wants to start. It'll crank and crank then sometimes bogs out. No, it does not run on starting fluid.
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Friday, October 27th, 2023 AT 9:35 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
So, it sounds like you don't have spark, did you see the video and try it? If so and you don't have spark the popular cause of no spark on these cars is a crankshaft position sensor. Here is the location so you can check the electrical connector and if okay swap out the sensor. Check out the images (below). Please let us know what you find.
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Monday, October 30th, 2023 AT 9:00 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Can you please upload a video of the engine cranking over? This will help us see if the engine is okay mechanically.
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Monday, October 30th, 2023 AT 9:02 AM

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