Voyager got crazy

XOPAR

MEMBER
2002 CHRYSLER TOWN AND COUNTRY
6 CYL
FWD
AUTOMATIC
65,000 MILES

Hi there, have a 2002 Chrysler Voyager LX 3.3 V6. Wife reported vehicle wont star, we did check for fuel and sparck, seems that fuel injector pulse is like crazy.
Cruise control light come and goes, and everytime cruise activates on the dash engine dies.
We have some experience in reparing procedures but now we are clueless about it. Any idea what to check for? Also can not see any trouble codes.

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

I hate to say it, but I feel the PCM may not be working properly. Try this. Disconnect all fuel injectors (remember which one goes to which injector). See if the vehicle will start and run for a few seconds with starting fluid. If it does, chances are a driver in the PCM for the injectors has failed. Also, check fuel pump pressure and make sure it is within spec and check the fuel pressure regulator to make sure that is good. One last thing, check to make sure the spark you are getting is a good hot blue snapping spark. If it is orange or white, it won't run the vehicle.

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Friday, January 14th, 2011 AT 11:10 PM

XOPAR

MEMBER
2 POSTS

All that you have say has been checked and seems to be ok.
Even we have configure a seconda hand but good working condition ECU with more or less same results.
What seems strage to me is control legend on the dashboard that comes and goes.
Everitime cuise legend comes, engine stalls and fails.
I know this vehicles are prone to have wiring harnes problems in certain models, but how can I know if front control module or confort control module has gone bad?
Now is it a common fail for this ecu´s to have problems with the injector drivers?
Regards
Ray

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Friday, January 14th, 2011 AT 11:32 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Although it isn't a common problem, the drivers in the PCM do go bad. NOTE: I am basing it on the concept that the injecter pulse is out of spec as you described. It could require something as a reboot that needs to be done by a dealer. I'm not sure what you mean by confort control module. There are several control modules in the vehicle, but the power control module is what takes care of the injector. Make sure the wiring harness is tight, clean, and none of the pins have been pushed back causing a problem. Also, make sure all grounds are good.

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Saturday, January 15th, 2011 AT 12:20 AM