no job stated, must we guess what state car is in or what about to do.??????? (just want to change coil packs?) or what?
what engine ?
3.8L is my guess... the V6, old design...
odd is why not the 3.7L in 2010.?? who knows?
i have 2008 JK with older, 3.8L
choices by generation.
2.8L VM Motori RA 428 Diesel I4 (no, that, it dont fire)
Complete engine specs
[show]
3.6L Pentastar V6 (2012 up)
Complete engine specs[24]
[show]
3.8 L EGH V6 (bingo i think and still like mine)
Complete engine specs[25]
[show]
now why ask that.
the PCM the firing order is fixed. (in computer code)
what matters with IS WIRING UP COIL PACKS
DID YO SCRAMBLE THOSE?
or are you messing with cam timing???
now the shocker, for 3.8L
it's
123456
per this drawing
http://www.fixkick.com/Jeeps/ASD.html#coil-pack
how to wire the coil pack
http://www.fixkick.com/look/odds-ends/jeep/2008-JK/slideshow/firing-order.JPG
I am to be agreeing with yipete... yup...non adjustable (but if over 190k check for stretch in chain. They can give some really weird symptoms if this happens!!! cam sensor goes out of phase with crank sensor and computer can't figure it out but it won't show up on scan)
I am to be agreeing with yipete... yup...non adjustable!!! got a problem look somewhere else. But, you can check chain for strech!!! (over 190k they can get weird on you!!!)
The timing is controlled by the computer and is not adjustable. What makes you thing the timing is off. The 2.5L has a timing chain, not a belt, so there should'nt be any reason to replace it unless it broke.
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