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Anonymous Posted on Jul 04, 2013

No bus hello I have a 2002 dodge Dakota slt v8 4.7 with error code (no bus)truck wont start. checked all fuses all good.i have no power to the fuel pump . relays are good . I put new crankshaft and camshaft sensors and had no difference. can someone please give me a clue on what to do next.

1 Answer

Bill Boyd

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  • Dodge Master 53,816 Answers
  • Posted on Jul 04, 2013
Bill Boyd
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Joined: Jan 04, 2013
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Have you reset the cpu to adjust it to the new sensors. Did you use genuine sensors as the cpu will not always recognise aftermarket units and reads them as faulty

5 Related Answers

Anonymous

  • 721 Answers
  • Posted on Jun 20, 2009

SOURCE: 95 dakota cranks but wont start

Well I'm a chrysler master tech & this is a little odd. There's alot of things not in the question so here are mine. I'm assuming it's a 3.9 no 4wd. When did this happen? When you check for power do you have some one turn the key on while you check? If still no power then make sure all the fuses are good from the one under the hood to the one inside the cab. Next be sure to check the grounds. You'll need to by a manual like a Haynes in order to get a decent wiring diagram. In a worst case senario the main power box under the hood has an issue & the asd relay gets no power,hence no start. Ran into it on a 95 caravan & it took a week to figure it out & no replacement was available & I had to hard wire it so it would run. Hope this helps.

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Anonymous

  • 715 Answers
  • Posted on Oct 10, 2009

SOURCE: 1993 dodge dakota v6 not staring. Fuel pump is

no spark check elec

A

Anonymous

  • Posted on Oct 21, 2010

SOURCE: got a 92 dodge Dakota

Check the Auto Shutdown Relay (ASD) in engine power distribution box (left inner fender-under hood)
You should hear fuel pump for 15 sec after you turn on key

swanwine

  • 147 Answers
  • Posted on Nov 24, 2010

SOURCE: I have 2005 Nissan altima that wont start. It

Nissans are known to have problems with ignition coils which would not show up on code reader. I would start with that. Pull a plug and hold it to ground to see how strong the spark is while turning engine over. If the plugs are wet when you take them out then you can be sure it is in all probability related to coils.

Freddy

  • 1311 Answers
  • Posted on Sep 08, 2011

SOURCE: my 2002 envoy won't start,

You say you have power at the relay, but what part of the relay? If you don't have 12V at the gray wire going to the pump, then maybe the relay is bad. Also check to see what voltage you have on the dark green/white wire, this controls the relay (should be 12V).

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2002 dodge Dakota 4x4,when I turn ignition on the fuel gauge won't register and won't start and the code...no bu5.... shows up when I switch ignition back and forth can someone please help?

No bus means serial data bus (network ) problem , your best bet , take it to a qualified repair shop. All the control module's on the vehicle share info. over this network . . Hooking up a professional scanner an checking DTC'S - diagnostic trouble code's in all the vehicle modules is what should be done first , this would make diagnosing faster . Possible problems - module bring down the network , wiring or connector problem . More then likely a network code stored . U - codes . Your vehicle has two different data networks , SCI & PCI bus .
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Dodge Dakota Crank No Start Fix - YouTube

? 8:10
https://www.youtube.com/watch?v=a-rfAd0YLg0
Jun 29, 2014 - Uploaded by AJ Pierce
In this video, I will show you how I fixed my 1992 Dodge Dakotanot starting. ... Engine cranks but won't start - Duration: 18:30. jimthecarguy ...

Inspect Fuses if Engine Cranks But Does Not Start : Dodge ...

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Engine Will Not Start Due to Blown Door Lock Fuse on Dodge Dakota ... cap and rotor, wires, plugs, coil, fuel pump assy, coil pickup sensor, crank position sensor and have new ECM on the way, Cranks but won't fire. ... 1990 Dodge Dakota.

Dakota won't Start - Discussion on Topix

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Jan 22, 2009 - have a 1993 dodge dakota sport that wont start. when you turn the key on there is no power to the fuel pump and does not fire. any ideas ... I just bought a1990 Dodge Dakota Sport 4x4 5-Speed, there is only one problem, it only .... I went to move it the other day, it would turn over, but had no spark or gas.

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2002 dodge dakota slt 4x4 4.7 ltr key on eng off all lights come on on the ipc then go off after 15 sec start to come on one by one then odo blinks 4x goes to no bus. Vehicle starts and runs fine no ecm...

with no bus, that is power to or from the pcm. try wiggling the 3 plugs at the pcm with the key on. if you see lights change, or hear the bing, that would most likely be the pcm.
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When I turn the ignition everything comes on except the fuel pump.The gas hand stays still and does not register.then again it does.

if gas gauge dont work and vechicle wont start fuel pump faulty but check fuel pump fuse or relay first make sure they okay.
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Have you checked base fuel pressure with a gauge ?
Code 42 is a problem with the fuel pump relay or ASD relay circuit.
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check and make sure you have 12 volts to fuel pump with key in on position, if not trace back wires to relay if good, turn key on, off , on, off
then leave on and check codes may be crank sensor, or cam sensor
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Check for fuel pump pressure. Follow the basic Fuel ,Spark, Fuses,
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hav e ign. switch checked a lot of these problems come from these switches on all cars and trucks after they are a few years old, simple but usually fixes.
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It sounds like it jumped time
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