Bad PCM? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 9 (permalink) Old 01-01-2015, 09:27 PM Thread Starter
Intrepid Newbie
 
Join Date: May 2014
Location: St. Paul
Posts: 7
Feedback: 0 / 0%
 
Bad PCM?

My battery light had been coming on intermittently. Then it stayed on. Was only getting 11 volts at the posts. It has a new battery with clean connections.

I had the charging system tested at the parts store and it said the voltage regulator is bad and alternator is good. But in my prior experience when a voltage regulator goes bad it just goes bad. After sitting for a couple days the battery light is off again and getting 14.3 volts.

It is possible for the voltage regulator to be this intermittent?

2000, 2.7, 252K miles

Thanks
4wheelduck is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 01-01-2015, 09:41 PM Thread Starter
Intrepid Newbie
 
Join Date: May 2014
Location: St. Paul
Posts: 7
Feedback: 0 / 0%
 
I just retested with the voltmeter at the battery. 14.3 with dips down to low 12's.
4wheelduck is offline  
post #3 of 9 (permalink) Old 01-01-2015, 10:24 PM Thread Starter
Intrepid Newbie
 
Join Date: May 2014
Location: St. Paul
Posts: 7
Feedback: 0 / 0%
 
Also, the only CEL codes I've ever had were for "random misfire." I just kept clearing it out. Hasn't come back for a couple months.
4wheelduck is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 01-02-2015, 06:50 AM
Intrepid Pro
 
mnitetrain's Avatar
 
Join Date: Nov 2003
Location: s/e ma
Posts: 13,687
Feedback: 2 / 100%
                     
Voltage regulator is internal to alternator. 252,000 might be ready for new/rebuilt alternator.
mnitetrain is offline  
post #5 of 9 (permalink) Old 01-02-2015, 07:02 AM
Woober Goobers!

 
Ronbo's Avatar
 
Join Date: Mar 2005
Location: Tiny Pebble, AR
Posts: 48,710
Feedback: 44 / 100%
                     
Generator output is controlled by the PCM. Might want to check your wiring and connections. Possibly some corrosion at the PCM connectors/Pins?
Ronbo is online now  
post #6 of 9 (permalink) Old 01-02-2015, 09:15 AM Thread Starter
Intrepid Newbie
 
Join Date: May 2014
Location: St. Paul
Posts: 7
Feedback: 0 / 0%
 
All the wiring appears to be ok. no corrosion by the pcm or the fusible link near the battery. I even shook the wiring back and forth but no battery light. Seems like the voltage isn't staying low for long enough to turn the light on. But you know it will when I'm half way to work and its only 3 degree's outside. I really just need more of a confirmation from you all with more experience with these systems that this is most likely the PCM.

Last edited by 4wheelduck; 01-02-2015 at 09:17 AM. Reason: grammatical errors
4wheelduck is offline  
post #7 of 9 (permalink) Old 01-02-2015, 06:11 PM
Intrepid Newbie
 
douglikesintepids's Avatar
 
Join Date: May 2010
Location: Waterloo, Canada
Posts: 62
Feedback: 0 / 0%
 
actually voltage regulator is inside the PCM.
you can try putting new alternator if it is the original one on car
but I think with those high kms you are needing a new or rebuilt PCM
douglikesintepids is offline  
post #8 of 9 (permalink) Old 01-03-2015, 03:07 AM
Intrepid Pro
 
hrmwrm's Avatar
 
Join Date: Oct 2011
Location: Sangudo, AB
Posts: 1,083
Feedback: 1 / 100%
                     
brushes in the alternator are probably getting worn and sticky.
happens to many of them. they quit working, give em a tap, they work for a while, then quit again.
usually the pcm would not be intermittent. except maybe for bad grounds, but i'd think you'd have other slight glitches as well then.
hrmwrm is offline  
post #9 of 9 (permalink) Old 01-12-2015, 07:28 PM
Intrepid Newbie
 
Join Date: May 2014
Location: USA
Posts: 53
Feedback: 0 / 0%
 
Try to install an extra grounding kit ans observe if there would be any changes in the volt reading.
rapide is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Member names may only be composed of alpha-numeric characters. (A-Z and 0-9)

!!ATTENTION ADVERTISERS!! If you intend on advertising anything on this forum, whatsoever, you are required to first contact us here . Additionaly, we do NOT allow BUSINESS NAMES unless you are an Authorized Vendor. If you own a business, and want to do sales on this site via posting or private message, you will need to follow the rules. Shops, Stores, Distributors, Group Buys without being authorized will see your account terminated.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome