Go Back  DodgeForum.com > Dodge Trucks > Dodge Dakota > 1st Gen Dakota Tech
Reload this Page >

Bugs in the electrical system??

1st Gen Dakota Tech 1987 - 1996 Dodge Dakota Tech - The ultimate forum for technical help on the 1st Gen Dakota.

Bugs in the electrical system??

  #1  
Old 07-09-2019, 02:30 PM
PBblaster83
PBblaster83 is offline
Registered User
Thread Starter
Join Date: Mar 2018
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default Bugs in the electrical system??

So the other day I was on my way to work and the check engine light came on, got to work and check everything, fluids we're all good except for coolant which is always low 😕 When I got home I got a video of the flashes, OBD 2 really spoiled me I don't really deal with either but 2 is easier. From what I could tell from the flashes, it was Code 46 charging system. Anyways, I went to work the next day, drove in no problem. On the way home I could noticeably see ALL the lights dimming and the battery gauge was dying too. Got home just for it to die in the driveway. 🤦 At least I got home 👍

Checked the battery voltage, it was at 9 volts. It was an older battery that really didn't work with the truck. Just changed the battery 810 CCA. Put it and started it up just fine. The check engine light was still on though. Started checking grounds, the ground on the alternator showed 0, all the other grounds read 1. Long way of saying, I think I have a parasitic load somewhere? Something grounded to frame? How do I track it down?
 
  #2  
Old 07-09-2019, 04:52 PM
RalphP
RalphP is offline
Champion
Join Date: Jan 2013
Location: Northwest Louisiana
Posts: 2,894
Received 2 Likes on 2 Posts
Default

"the ground on the alternator showed 0, all the other grounds read 1" - 0 what? 1 what? Numbers mean nothing unless we know what's being measured.

Do you have the factory service manual for your truck? There's a troubleshooting tree for no-charge on most years.

Also, what was the new codes? You should have a 12 for "PCM battery disconnected in last 50 power cycles" and a 55 for "End of codes"; I'm more interested in the OTHERS.

If you want them decoded, you can toss them to http://www.dakota-truck.net/CODES/codes.html (space between, like 12 46 55 will give all of them at one time) and see what it spits out.

RwP
 
  #3  
Old 07-09-2019, 08:24 PM
PBblaster83
PBblaster83 is offline
Registered User
Thread Starter
Join Date: Mar 2018
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default

My bad, I was checking continuity on the grounds, I'm thinking something is grounded out to the frame, not sure though.

I checked the new codes, I only had one, Code 41 generator field not switching correctly. I checked my alternator and there was hardly any magnetic pull from it. I'm planning on getting a new alternator on Friday when I get a day off. Another thing, I didn't get Code 12, is that a problem?
 
  #4  
Old 07-09-2019, 08:31 PM
RalphP
RalphP is offline
Champion
Join Date: Jan 2013
Location: Northwest Louisiana
Posts: 2,894
Received 2 Likes on 2 Posts
Default

That might not be the alternator; I'd get the current one tested.

The field is controlled by the ECU normally, but that's not an uncommon failure; it's common enough that not only do they sell kits to convert to an external regulator, they even sell at least one kit that puts a resistor in so that the ECU thinks the field is working!

OTOH, if the field popped open inside the alternator, you'd also get that error.

I don't know why you didn't get a 12; but I wouldn't worry too much either way right now.

RwP
 
  #5  
Old 07-12-2019, 04:36 PM
PBblaster83
PBblaster83 is offline
Registered User
Thread Starter
Join Date: Mar 2018
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
Default

I actually was getting code 12 I was just misreading it, oops.

I got the alternator tested, AAP said it was bad. I got an new 120 amp. I got it home and installed, to find that it had a six rib pulley. So with that pulley my original belt looked like it was 1/2" to 1" too small. I got the pulleys swapped and put back in, the SAME belt just slipped over the tensioner. So now I have to get a shorter belt 🤦 oh well
 

Thread Tools
Search this Thread
Quick Reply: Bugs in the electrical system??


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: