Will turn over but will not stay running

192,000 MILES • 4.6L • V8 • 4WD • AUTOMATIC
Avatar
ROBERT NIXON
  • MEMBER
  • 1 POST
Truck will turn over run for like 10 second then shut off. then at temperature light comes on but no codes pop up. truck was fine before yesterday.
Jun 24, 2020 at 11:43 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi,

When this happens, does it then start right back up? Have you checked fuel pressure? If it doesn't start right back up, have you checked for spark?

What you describe sounds like it could be a bad crankshaft position sensor. If it fails to restart right away, check to see if there is spark to the plugs. Here is a link that explains how that is done and one that explains common symptoms related to the sensor's failure:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

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


If you have a live data scanner, see if there is an RPM signal when if doesn't restart.

Let me know what all has been checked and done to this point.

Take care,
Joe
Jun 25, 2020 at 11:43 AM
Add a reply
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.

Frequently Asked Problems for This Vehicle