No spark

Tiny
ABARWICK
  • MEMBER
  • 2006 DODGE DURANGO
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 255,000 MILES
Changed the battery in my vehicle tried to crank it would not start. The next day it cranked every time. Went out the next morning to warm up the truck by the time I went out to get in it had shut off and has not cranked since. We replaced the cam sensor and the crank sensor but still not getting spark. It turns over but it is not catching.
Wednesday, December 20th, 2017 AT 6:40 AM

7 Replies

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Check fuse #10 in the power distribution center (PDC) located under the hood, left (drivers) side.
If that fuse is okay, try a new automatic shutdown relay in that same PDC or swap a non important relay of the same type into that spot and try again.
The front blower motor relay looks the same and is right next to that ASD relay, see the diagram below.
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Wednesday, December 20th, 2017 AT 6:51 AM
Tiny
ABARWICK
  • MEMBER
  • 4 POSTS
That did not work. Really need help. We tried disconnecting the battery did not work. We did the lock and unlock in case it was the security shutdown. Nope.
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Wednesday, December 20th, 2017 AT 3:43 PM
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Do you have voltage to all the red wires at them ignition coils, with the key on run and start?
If yes, then make sure all the PCM fuses are okay, they are 18 and 34 in the junction block (left kick panel) and 16, 18 and 22 in the power distribution center located under the hood, drivers side.
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Wednesday, December 20th, 2017 AT 4:36 PM
Tiny
ABARWICK
  • MEMBER
  • 4 POSTS
Checked fuses they were good still no start
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Friday, December 22nd, 2017 AT 4:36 AM
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Do you have voltage to all the red wires at them ignition coils, with the key on run and start?
If so, you may want to retrieve the engine trouble codes cause a crankshaft and/or camshaft position sensor may be preventing spark.
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Friday, December 22nd, 2017 AT 5:52 AM
Tiny
ABARWICK
  • MEMBER
  • 4 POSTS
How do you check the voltage at the coils
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Friday, December 22nd, 2017 AT 11:41 AM
Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
With a voltmeter or at least a 12 volt test light.
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Friday, December 22nd, 2017 AT 2:30 PM

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