Engine cranks but does not start?

2008 CHEVROLET MALIBU
126,000 MILES • 3.6L • V6 • 2WD • AUTOMATIC
Avatar
LING LING
  • MEMBER
  • 2 POSTS
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.
Oct 27, 2023 at 4:59 AM
Advertisement
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,238 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.
Oct 27, 2023 at 9:14 AM
Avatar
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.

Oct 27, 2023 at 2:35 PM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,238 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.
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Oct 30, 2023 at 2:00 AM
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,238 POSTS
Can you please upload a video of the engine cranking over? This will help us see if the engine is okay mechanically.
Oct 30, 2023 at 2:02 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.