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Erich
Dodge Dakota


11/10/2001
01:27:44

Subject: Dead ECU? No charging
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Last night driving home I had what seemed to be an alternator failure, CHECK GAUGES light came on,voltage dropped off, and headlights got dim. Luckily got it home on the battery(2 mins).

Got alt. tested today and its OK. Would it be anything besides the ECU? Is the voltage regulator really built into the comp. as I have heard? This is on a 98 5.2 5spd. w/ heavy duty everything but suspension, and 72K miles. TIA for any help




CW
Gen III
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11/10/2001
10:18:00

RE: Dead ECU? No charging
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Yes it is built in to the computer but you can install a external regulator to handle the voltage chores.

4.7 5sp RC 3.91 sport plus

HSKR
Dodge Dakota
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11/10/2001
14:27:53

RE: Dead ECU? No charging
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Do you still have the stock battery?? If so, get the battery checked out. Dodges batteries are notorious for dying on the Dakota's with no warning at all. I'll bet if you get the battery checked it will fail. Mine died on me, and coudln't even get it jump started.





erich
Dodge Dakota


11/11/2001
02:08:19

RE: Dead ECU? No charging
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I am pretty sure it isn't the battery (replaced 6 months ago)as it did get get me home and actually started the truck this afternoon w/o putting a charger on it or anything (sitting for ~36 hours). If I put on an external regulator does that mean I can still use the currrent comp.? The truck will run with it in just not long.What is required? Thanks for the reply.



sandman
Dodge Dakota
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11/11/2001
21:00:54

RE: Dead ECU? No charging
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Does Dodge put the voltage regulator for all of it's trucks in the computer? I have a 2001 4.7 Dak QC and it seems silly not to put it in the alternator!



sandman
Dodge Dakota
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11/11/2001
21:02:42

RE: Dead ECU? No charging
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Does Dodge put the voltage regulator for all of it's trucks in the computer? I have a 2001 4.7 Dak QC and it seems silly not to put it in the alternator!



CW
GenIII
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11/11/2001
22:51:17

RE: Dead ECU? No charging
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As far as I know they put all of the vehicles reguators in the computer. Not good if they go but rarely happens.

2001 4.7 5sp RC 3.91 sport plus

sdesi
Dodge Dakota
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2/28/2004
09:47:53

RE: Dead ECU? No charging
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I have 90 dakota doing the same thing need to know the proper way to install external volt regulator does anybody have the proper wireing spec's to do this thanks



Bob Travale
Dodge Dakota
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4/20/2004
08:32:50

RE: Dead ECU? No charging
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I put in new battery, alternator, in my 91 and finally took it to auto electrician. They said the problem is it's the regulator in the computor.They already done 3 Dodges with the same problem.There going to bypass the computor and install an external regulator for 60 bucks. Only problem is the check engine light will not go out. Beats paying 600.00 Cdn for the complete computor.I wonder who the engineer at Dodge was to come up with putting the regulator in with the computor.



Dirtsurfer
Dodge Dakota
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4/20/2004
08:45:01

RE: Dead ECU? No charging
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$600 Canadian? Mine went on my 91 several times, picked up a rebuilt from the dealer (new no longer available) for $135 USD. Came up as a code 41 (I think, been awhile) on a DRB, alternator field. Heat seemed to be my problem, happened during the summer. Cowl induction scoop was the cure, let the heat out faster.



optimistic
Dodge Dakota
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6/24/2004
20:04:25

RE: Dead ECU? No charging
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Hi,
I have the same problem with my 91 dakota, the ECU is dead, I want to install an external regulator. The parts guys around here don't have a clue as to what will work. Can anyone offer me some advice as to who to contact?



Kowalski
GenIII
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6/25/2004
08:15:07

RE: Dead ECU? No charging
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You could probably pick up a used one at carparts.com as cheaply as it would cost to convert it, maybe less.

Lead, follow, or get out of the way

?
Dodge Dakota
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6/25/2004
08:42:11

RE: Dead ECU? No charging
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Don't forget to check the wiring harness from the underhood fusebox back to the firewall on older
trucks -- there is usually a poor splice of
3 to 4 wires .
Also the connector at the alternator
Chryco used a ' wire ' nut instead of a solid
metal nut = burns the connector off the end
of the heavy wire.. On my 95 -got a heavier
connector and a normal "solid" nut = fixed..



Bob Lincoln
Dodge Dakota
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6/25/2004
09:25:36

RE: Dead ECU? No charging
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The reason the regulator isn't in the alternator like older GMs is that it's too harsh an environment for the silicon ICs. But they should have left it the way it was in the 1970s, a separate regulator mounted on the firewall. That was cheap and easy to replace.



but
Dodge Dakota
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6/25/2004
21:11:19

RE: Dead ECU? No charging
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it cost them about 6 bucks to put it on the firewall and $0.71 to put it in the PCM. that comes to $5.29 per vehicle, or, over about 4 million cars and trucks over the past few years, more then 20 million in the corporate coffers, and since it is after the warrentee when they usually go bad so what? DC aint payin for it so why should they care?



g.dawson
Dodge Dakota
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8/12/2012
04:25:00

RE: Dead ECU? No charging
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the question is due morpar's computer's fail we all know they due as often as a hooker drop's her panties the questio i have is what type of external regulator were can i find one becuase the the only other option is going dodge and buying a compter from them its seems to they got one hell of a racket going on make fautly computer&then make it vin specfic so cant get a used or aftermarket one thats slick



daddio
Dodge Dakota
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8/15/2012
13:13:19

RE: Dead ECU? No charging
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I hate to break your heart but, this is not exclusive to Dodge. There are companies out there that re-man the PCM's and can program them to match your exact VIN.



Daniel Jones
Dodge Dakota
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1/27/2019
20:09:03

RE: Dead ECU? No charging
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Check gauge light came on , needle dropped to off
position,got home 5/miles.it started right up and
the needle came back up partially. Started 36
hours later and gauge light off and needle still
up partially.Will the scope at a auto parts
retailer diagnose for me?



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