Sometime it will stall will driving it

Tiny
KATHY1004
  • MEMBER
  • 1999 MERCURY COUGAR
My v6 cougar, will sometimes crank then it dies, sometime it will stall will driving it. When it is running it drives fine, could this be a fuel pump problem?
Tuesday, November 27th, 2007 AT 8:17 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

This sounds like you might have an issue with the crank position sensor
The crank sensor measures the rotation of the engine and sends that information to the ECM.
Over time with heat and vibration from the engine, it can lose its internal calibration.
This will make the sensor send bad data to the ECM. This could trigger the engine to shut down.
It can happen at any random time. Also, after the engine stalls the engine may or may not start.

Here are a couple of helpful articles:

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

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
Was this
answer
helpful?
Yes
No
Friday, January 14th, 2022 AT 9:28 PM

Please login or register to post a reply.

Sponsored links