Crank but no start

140,000 MILES • 4.0L • V8 • AUTOMATIC
Avatar
ROBERTDENNIS
  • MEMBER
  • 1 POST
Cranks but does not start. Car stalled on highway while my wife was driving it. It was towed home. I started it without trouble three hours later when arriving at home from my work and drove it around the block without problems. I shut it off and then about half hour later tried to start it again. It cranked but would not start. It has not been able to start since then; just cranks fine but no start.
Check engine light on when key in auxiliary/power position. When cranking, tachometer remains at zero and does not move at all. Tried a plug wire with a screwdriver inserted and brought close to a ground while cranking and no spark.

How likely is this due to failure of the crankshaft position sensor? Might do further tests but extremely difficult because of tight, inaccessible locations of fuel rail, injectors, coil, Schrader valve, fuel pump, etc.
Oct 29, 2017 at 9:38 AM
Advertisement
Avatar
STRAILER
  • ✓Experienced Mechanic
  • 55,586 POSTS
The crankshaft angle sensor came to mind when I was reading this problem. Here is a guide to let you know what you are in for when changing the sensor.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Here is what it will be like for your car (below)

Please let us know what happens.

Cheers, Ken
Oct 30, 2017 at 11:18 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