Shut off while driving

2004 CHRYSLER PACIFICA
170,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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BENTLEYT17
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I was driving it and it just shut off. I have replaced the PCM,crankshaft sensor,checked all grounds. battery and alternator are good. fuel pump is kicking on and new spark plugs but still will not start.
May 20, 2020 at 2:24 AM
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BMDOUBLE
  • ✓Experienced Mechanic
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Did you scan it for engine codes? If so what codes did you receive?
May 20, 2020 at 3:30 AM
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BENTLEYT17
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Po 562. It's a low voltage code but I can't figure it out.
May 20, 2020 at 3:57 AM
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ASEMASTER6371
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Good afternoon,

The engine needs 3 things to run. Spark, compression and fuel pressure

https://www.2carpros.com/articles/engine-stalls

The fuel pump may run but not produce enough pressure.

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

When you crank the engine, do you see the tachometer move up a little while cranking? That will tell me if the crank sensor is working.

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

Compression. It should be checked. One cylinder on each side.

https://www.2carpros.com/articles/how-to-test-engine-compression

The 562 is for low voltage and that could be the reason for shutting off. You need a minimum of 12.2 volts for any of the modules to work.

https://www.2carpros.com/articles/car-battery-load-test

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Roy
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May 21, 2020 at 5:45 AM
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BENTLEYT17
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Yes, has brand new crankshaft sensor. it kinda seems like it's not getting spark.
May 21, 2020 at 10:01 AM
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ASEMASTER6371
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Does the tachometer show rpm while cranking?

Roy
May 21, 2020 at 10:35 AM
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BENTLEYT17
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I don't believe so no.
May 22, 2020 at 6:05 AM
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BENTLEYT17
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I'm sorry yes it does.
May 22, 2020 at 6:06 AM
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ASEMASTER6371
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I am going to attach a diagram for you to view for the crank sensor. You will need a voltmeter to do a test.

I need you to put the red lead in the pink/yellow wire and the black lead in the dark blue/dark green wire. Turn the key on and tell me the volt reading.

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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May 22, 2020 at 6:33 AM
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BENTLEYT17
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Okay, i will let you know ASAP.
May 23, 2020 at 11:54 AM
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BENTLEYT17
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It read at 5.00v.
May 24, 2020 at 1:11 AM
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ASEMASTER6371
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Okay, then move the red lead to the other wire and tell me the voltage.

Roy
May 24, 2020 at 1:22 AM
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BENTLEYT17
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Reading the same.
May 24, 2020 at 1:28 AM
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ASEMASTER6371
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Okay did you check the fuel pressure?

Also, if you spray some carburetor cleaner into the air filter, does it start and stall?

Roy

May 24, 2020 at 1:34 AM
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BENTLEYT17
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Yes, and no start at all.
May 24, 2020 at 1:38 AM
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BENTLEYT17
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But didn't check fuel pressure.
May 24, 2020 at 1:39 AM
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ASEMASTER6371
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Check the pressure to verify you have fuel pressure.

FUEL SYSTEM PRESSURE

Regulated Pressure .................... 58 psi

Roy
May 24, 2020 at 1:45 AM
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BENTLEYT17
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I have to get gauge tomorrow, but besides that any other thoughts?
May 24, 2020 at 11:57 AM
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ASEMASTER6371
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One step at a time.

Let me know about the fuel pressure.

Roy
May 24, 2020 at 10:59 PM
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