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Jackrabbit
Dodge Dakota
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3/03/2010
19:12:37

Subject: Strange -- Won't Start Suddenly
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I have a 2001 Dodge Dakota with a 3.9L V6. The check engine light came on and within a couple of weeks my truck would not start. When I stick the key and turn it to the run position there are two beeps, the speedometer flashes 3 times and then displays a message 'No Bus'. When I try to crank it up it just keeps cranking but will never start. Anyone seen this before? Any advice will be greatly appreciated.

Thanks



ya
Dodge Dakota
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3/04/2010
11:53:00

RE: Strange -- Won't Start Suddenly
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Check all grounds

1 Engine to frame

2 frame to body

3 body to battery

Make sure they are clean, (remove them)
and re-tighten all.



jackrabbit
Dodge Dakota
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3/04/2010
18:36:06

RE: Strange -- Won't Start Suddenly
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I have put on new battery terminals. I will try to redo the grounds for the engine,frame, and body and see if that works.

Anyone know of any other possibilities?



CCCAHOE
Dodge Dakota
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3/04/2010
23:40:53

RE: Strange -- Won't Start Suddenly
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"No Bus" means you'll be taking a bus.



Bob Lincoln
Dodge Dakota
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3/05/2010
08:33:59

RE: Strange -- Won't Start Suddenly
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No Bus means no communication with the ECM. So there is a connection problem to the ECM.



Jackrabbit
Dodge Dakota
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3/05/2010
10:58:00

RE: Strange -- Won't Start Suddenly
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So I might need a new wiring harness which hooks up to the ECM? Is the ECM the main computer for the truck?




Freakin eh
Dodge Dakota
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3/05/2010
11:38:29

RE: Strange -- Won't Start Suddenly
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Ignore the foolish posts!

This was talked about on the V8 board months ago.
It turned out to be a ground problem 90% of the
time!



Hemi
Dodge Dakota
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3/05/2010
12:44:00

RE: Strange -- Won't Start Suddenly
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I agree with freakin eh, focus on the ground wires, but ya gotta admit cccahoe's post was pretty damm funny !!!!!!



Jackrabbit
Dodge Dakota
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3/05/2010
14:19:18

RE: Strange -- Won't Start Suddenly
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Sure nuff that taking the bus joke is funny.....that is until you have to travel 24 hours on one......I'd rather cruise on my own truck



jackrabbit
Dodge Dakota
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3/10/2010
15:54:22

RE: Strange -- Won't Start Suddenly
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I've taken all the ground wires loose and sanded the areas of contact for the grounds between the body,engine, and frame. They were tight and there was no corrosion.

Where do I start at finding the connection problem with the ECM?



Dbentch
Dodge Dakota
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7/25/2010
10:21:15

RE: Strange -- Won't Start Suddenly
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Check the battery. It will crank but not have enough power to start the computer. that happened to me on my 2000 Dodge Dakota V6.



big red
Dodge Dakota
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7/26/2010
07:17:11

RE: Strange -- Won't Start Suddenly
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I just went through this myself. It is the ECM.

You can pay about $1000 from the dealer or order one from www.autocomputerexchange.com. It cost about $265 and is already programmed when it arrives. Just swap it out and done!



Bob Lincoln
Dodge Dakota
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7/26/2010
09:18:52

RE: Strange -- Won't Start Suddenly
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I don't think you can remotely state with certainty that it is the ECM. There could still be ground or connector issues, which are virtually free to fix.



big red
Dodge Dakota
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7/27/2010
11:28:44

RE: Strange -- Won't Start Suddenly
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You are right Bob, all other possibilities should be checked first.

You may also want to check under the dash where the emergency brake is. There is a wiring harness that is extremely close to the gears on the brake and sometimes cuts or shorts a wire.

From my research, No Bus is most likely the ECM, as it was with mine, but it could be caused by faulty wiring, ground, instument panel, or the crank position sensor. You should rule out all of these things first.





Big red
Dodge Dakota
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8/24/2010
16:44:57

RE: Strange -- Won't Start Suddenly
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What did this turn out to be?



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