I was wondering if the 02 and 03 have the same motor? I found an 03 motor on-line for a decent price and was hoping it would work. And are the wiring harnesses and computer the same in both those years? or are they vehicle specific?


Thanks,
J

 

There were a couple motors offered in those years. Can you be more specific?

 

just a little more detail would help this thread out alot!

 

Well it is in the 4.0 forum so I think it is safe to say he is referring to 4.0 SOHC engines of the 02 and 03 vintage. I know the 02 4.0 is a EGR engine and I think the 03 has no EGR valve. There may be a way to get around that but I would guess the computers are different. I don't know if there are any other differences.

 

The motors a 03 4.0 vin-e,8th-digit,sohc,6-245. Hope that helps

 

The computers are different and the wiring is a bit different

The EGR differences as well.

How much is the 03 engine going for?

You can always bolt the EGR to the 03 engine and use all the wiring from the 02. Its the same basic block and design.

I have an 03 with all the wiring and a 2003 PCM, I need to get rid of it!

 

Oh so the only difference is the egr? Is their a way around that?

 

It's 390+shipping.. It has 35,000 on it

 

that is the only difference that i know of. a tuner can tune the EGR out...

Do you have it tuned out now? Since you are supercharged I would be surprised if the computer is using it anyway. Being the tuner turned it off. You would have to verify with them. Otherwise from what I know the engine is the same and everything should swap fairly easy.

 

If I could just bolt up the egr that would be awesome. would the wiring work on the 03 if you use the 02 computer with the egr?

Thanks Zach, that helps a lot.

 

ah good price!

if you were closer id let you take mine but it has probably more miles than you are looking for.

i jsut want it out of my shop so i can have the space back again.

 

i would use the 02 wiring and the egr. you will also need your headers/manifold because the egr goes to it as well.

that way its basically a plug and play. The EGR goes from the intake (supercharger to the manifold)

Also there may be injector differences but i am assuming you swapped those as well since you are supercharged.

 

oh something else that is different is the 03 engine should have the upgraded timing chains. but it wont effect the pcm or any of that stuff.

 

Well I just talked to them and they said they got it in yesterday. The price is 540$ total and it has 36k not 35k. Well I think I'm going to get it since the egr is just "plug and play" and everything else is good to go.
Thanks for the info Zach.

 

Sucks about your engine.

That's a slamming deal on that used one!!

 

holy crap...totally forgot to text ya back JER!!

Anyway...

Use your existing harness and EGR system. 03's just have a block plate and a delete exhaust manifold. Make pigtail changes as-needed(injectors, dpfe, etc). Use existing PCM. Otherwise, good to go. Shoot me a text...accidently deleted the ones you sent me. We'll get that thing running in a dayish.

 

You know Jer, you could of asked me too! Since Shane slacks. lol

What happened to your motor? Just the timing chain rattle? Where ya been man!?

 

I blew a head gasket about 2 weeks ago and I just figured i'd get a new engine since taking the other one apart and replacing everything would be more expensive. And with the old one out I'll be able to beef it up and have a really strong motor, top and bottom end. Hey tre p.m me your number, i got a new phone and didn't have any old #'s.