Crank no start

2002 LINCOLN TOWN CAR
136,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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VANDIESEL
  • MEMBER
  • 1 POST
Koeo fuel pump kicks on for maybe a half of a second , while cranking fuel pump does not kick on also no spark. checked all fuse and relays all good. I'm at a loss.
Apr 25, 2021 at 2:38 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

Do you have access to a live data scanner? If you do, check to see if there is an RPM signal when cranking. If there is no signal, it's likely the crankshaft position sensor has failed.

The vehicle is equipped with an auto fuel shut down. However, if you hear the fuel pump, that isn't the issue.

Take a look through this link. It describes the most common symptoms of a faulty crankshaft position sensor. See if anything mirrors what you are experiencing.

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

Also, let me know if you scanned the computer to see if there are diagnostic trouble codes. That could be very helpful.

If you look at the attached picture below, it includes the directions and picture specific to replacing the sensor on this vehicle.

I hope this helps. Let me know what you find or if you have other questions.

Take care,
Joe

See pic below.
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Apr 25, 2021 at 9:07 PM
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