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2002 Dodge Caravan voltage regulator IN PCM

Tiny
BECCA_WRIGHT
  • MEMBER
  • 2002 DODGE CARAVAN
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
I have found information that the voltage regulator in the PCM can be tested seperate from replacing the whole unit, cant find WHERE that is exactly. We have tried just about everything, fuel pump, sensors, new MAP, and it is still not starting and throwing the same codes. At a total loss on this one. Fuel pump engages repeatedly and getting no fuel, stalls while driving when it does start. Runs like a champ then dies when it does start, any thoughts?

codes
645
134
108
320
1389
1391

there were only the O2 sensor and high volt to Map before we changed the map
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Sunday, September 19th, 2010 AT 11:50 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
When you say the fuel pump engages repeatidly, do you mean it is on off on off. When it doesn't start, are you getting spark and fuel to the engine?

As far as the regulator, that will cause the battery to go dead. Is that happening?

The fuel pump regulator is on the fuel rail. I need you to check if you are getting constant fuel pressure within specs.

Let me know what you find and if you replaced the fuel pump relay.
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Monday, September 20th, 2010 AT 3:01 PM

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