2010 Jeep Grand Cherokee Logo
Leota Ridge Evidson Posted on Aug 24, 2016
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What is the firing order on a 2010 jeep grand Cherokee Laredo 3.7 L v6? I want to make sure I have the wires in the right order. Thank you

  • Leota Ridge Evidson
    Leota Ridge Evidson Aug 24, 2016

    So I think I have them all in the correct spot, when I reconnected the battery to start it ugh now there is fuel spewing out on the drivers side of motor. There is a silver line with what looks like clips connected to it. That's where it's coming out, I think it's called the fuel rail?

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  • Jeep Master 20,706 Answers
  • Posted on Aug 29, 2016
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The PCM knows how to fire them, its hard coded
there is no distributor.
my guess, is you scrambled the coil packs?
my 3.7L (its in USA) has 6 coil packs, called cops.
and can not ever be scrambled. ever.
ours is the WK jeep.
firing order is.
1 - 6 - 5 - 4 - 3 - 2
number one on all V engines is the most front cylinder
one is more front if you look at them.. left front is 1

the v6 has 6, cops coils
the v8 small same.
the V8 big has 3 cops with shared wasted spark crossover wires.
are you confused on what engine you have?>?


3.7L
page on in the FSM chapter 9
The cylinders are numbered from front to rear with the left bank being numbered 1,3, and 5
and the right bank being numbered 2,4, and 6. The firing order is 1-6-5-4-3-2. The engine serial number is
located at the right front side of the engine block
Drivers perspective, seated. (just like saying left car door)

craig heuvel

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  • Master 381 Answers
  • Posted on Aug 24, 2016
craig heuvel
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Left bank right bank
5 6
3 4
1 2

facing engine

  • 1 more comment 
  • Leota Ridge Evidson
    Leota Ridge Evidson Aug 24, 2016

    So your saying 1-2, 3-4, 5-6?

  • craig heuvel Aug 26, 2016

    thats what the diagram on autodata shows
    i was a bit skeptic myself

  • Anonymous Aug 29, 2016

    he got it wrong, he uses internet rumor to fix cars, try using the offical books.
    and win.
    the left front cylinder v6 is #1
    3.7L V6, and how can you mix up 6 cop coils>?
    what does WIRES mean??????????????????


    here ill post the factory words in page one of chapter nine for you.

    QUOTE JEEP (USA cars) (left means drives view)!!! SEATED in car... a standard.
    "The cylinders are numbered from front to rear with the left bank being numbered 1,3, and 5
    and the right bank being numbered 2,4, and 6. The firing order is 1–6–5–4–3–2. The engine serial number is
    located at the right front side of the engine block"-

    the FSM book, is free, posted here 100s of times, do I need to post it again?

    yes the left bank is odd bank.
    1,3,5
    2,4,6 right, Drivers seated view.

    the #1 cylinder if you were to look is more forward than #2, just like the crankshaft dictates.

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