Will not start

2007 JEEP LIBERTY
160,000 MILES • 3.7L • 6 CYL • 4WD • AUTOMATIC
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JEEPGIRLBETHANY
  • MEMBER
  • 1 POST
Stalled out completely while going up a hill the etc light came on and stays on. Put a new battery in and turned over once and would not start again. It turns over but will not fire. Replaced the crank shaft sensor and cam sensor but still will not fire.
May 18, 2018 at 1:25 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good afternoon.

You need fuel pressure, spark and compression to run.

When you crank the engine to start, see if the tachometer goes up on the numbers. That will tell us if the crank sensor is sending a signal to the PCM.

Fuel pressure should be tested to verify the fuel pump is working. Can you hear it run when you turn the key on?

Roy

https://www.2carpros.com/articles/car-cranks-but-wont-start

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-test-an-ignition-system
May 18, 2018 at 2:12 AM
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