Shut off while driving

Tiny
BENTLEYT17
  • MEMBER
  • 2004 CHRYSLER PACIFICA
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
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.
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Wednesday, May 20th, 2020 AT 9:24 AM

18 Replies

Tiny
BMDOUBLE
  • CERTIFIED MECHANIC
Did you scan it for engine codes? If so what codes did you receive?
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Wednesday, May 20th, 2020 AT 10:30 AM
Tiny
BENTLEYT17
  • MEMBER
Po 562. It's a low voltage code but I can't figure it out.
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Wednesday, May 20th, 2020 AT 10:57 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
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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Thursday, May 21st, 2020 AT 12:45 PM
Tiny
BENTLEYT17
  • MEMBER
Yes, has brand new crankshaft sensor. It kinda seems like it's not getting spark.
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Thursday, May 21st, 2020 AT 5:01 PM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Does the tachometer show rpm while cranking?

Roy
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Thursday, May 21st, 2020 AT 5:35 PM
Tiny
BENTLEYT17
  • MEMBER
I don't believe so no.
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Friday, May 22nd, 2020 AT 1:05 PM
Tiny
BENTLEYT17
  • MEMBER
I'm sorry yes it does.
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Friday, May 22nd, 2020 AT 1:06 PM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
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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Friday, May 22nd, 2020 AT 1:33 PM
Tiny
BENTLEYT17
  • MEMBER
Okay, I will let you know ASAP.
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Saturday, May 23rd, 2020 AT 6:54 PM
Tiny
BENTLEYT17
  • MEMBER
It read at 5.00v.
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Sunday, May 24th, 2020 AT 8:11 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Okay, then move the red lead to the other wire and tell me the voltage.

Roy
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Sunday, May 24th, 2020 AT 8:22 AM
Tiny
BENTLEYT17
  • MEMBER
Reading the same.
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Sunday, May 24th, 2020 AT 8:28 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Okay did you check the fuel pressure?

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

Roy
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Sunday, May 24th, 2020 AT 8:34 AM
Tiny
BENTLEYT17
  • MEMBER
Yes, and no start at all.
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Sunday, May 24th, 2020 AT 8:38 AM
Tiny
BENTLEYT17
  • MEMBER
But didn't check fuel pressure.
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Sunday, May 24th, 2020 AT 8:39 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Check the pressure to verify you have fuel pressure.

FUEL SYSTEM PRESSURE

Regulated Pressure. 58 psi

Roy
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Sunday, May 24th, 2020 AT 8:45 AM
Tiny
BENTLEYT17
  • MEMBER
I have to get gauge tomorrow, but besides that any other thoughts?
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Sunday, May 24th, 2020 AT 6:57 PM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
One step at a time.

Let me know about the fuel pressure.

Roy
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Monday, May 25th, 2020 AT 5:59 AM

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