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2011 to 2008 5.7 engine swap?

Tiny
CODYANDJACKIE
  • MEMBER
  • 2011 DODGE RAM
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I have the truck listed above. I replaced the engine with a 2008 Ram 5.7. I have a 2009 wiring harness and a 2011 ECU. The ECU will let the truck crank over just will not fire and run I'm also missing a couple sensor connections due to not having the correct harness. What should I do?
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Saturday, April 29th, 2023 AT 5:28 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

Is there a reason you didn't reuse the 2011 harness? That is what needs to be done. Let me know. Also, let me know what sensor connections are missing.

Let me know.

Joe
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Saturday, April 29th, 2023 AT 8:13 PM

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