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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.
Wednesday, May 20th, 2020 AT 9:24 AM

18 Replies

Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
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
  • 11 POSTS
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
  • MECHANIC
  • 52,797 POSTS
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
  • 11 POSTS
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
  • MECHANIC
  • 52,797 POSTS
Does the tachometer show rpm while cranking?

Roy
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Thursday, May 21st, 2020 AT 5:35 PM
Tiny
BENTLEYT17
  • MEMBER
  • 11 POSTS
I don't believe so no.
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Friday, May 22nd, 2020 AT 1:05 PM
Tiny
BENTLEYT17
  • MEMBER
  • 11 POSTS
I'm sorry yes it does.
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Friday, May 22nd, 2020 AT 1:06 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Okay, I will let you know ASAP.
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Saturday, May 23rd, 2020 AT 6:54 PM
Tiny
BENTLEYT17
  • MEMBER
  • 11 POSTS
It read at 5.00v.
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Sunday, May 24th, 2020 AT 8:11 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
  • 11 POSTS
Reading the same.
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Sunday, May 24th, 2020 AT 8:28 AM
Tiny
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
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Sunday, May 24th, 2020 AT 8:34 AM
Tiny
BENTLEYT17
  • MEMBER
  • 11 POSTS
Yes, and no start at all.
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Sunday, May 24th, 2020 AT 8:38 AM
Tiny
BENTLEYT17
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  • 11 POSTS
But didn't check fuel pressure.
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Sunday, May 24th, 2020 AT 8:39 AM
Tiny
ASEMASTER6371
  • MECHANIC
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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
  • 11 POSTS
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
  • MECHANIC
  • 52,797 POSTS
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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