0411 running a 2.5L Jeep engine

They go by many names, P01, P59, VPW, '0411 etc . Circa 1999 to 2006. All VPW OBD2 PCMs.
Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Mon May 09, 2022 2:05 pm

I had the opportunity The last couple of days to make a little progress. I got the crank reluctor mounted and I think I've got the "0" position figured out.

Here's some pics of the reluctor and crank position sensor.
As soon as I can get the engine back in the Jeep I'll start running wires.

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signal-2022-05-08-234927.jpeg (242.75 KiB) Viewed 479 times
Bad things happen FAST!!!

Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Tue May 10, 2022 12:17 am

I'm going to be using the cam sensor from a 2004 4.0L engine. It's a drop in part and gives a 1x signal.


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Bad things happen FAST!!!

Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Wed May 18, 2022 2:03 pm

I fired it up today. It sounds really good. It started pretty easy once I got every thing hooked up.
It's idling at about 1100 RPM but I expected it to be a little off from all the different sensors I'm using. I'm guessing at the RPM, I haven't hooked up the tach yet.
I have to run the OBD2 port wires so I can read the DTCs to see how it likes running on 4 coils and 4 injectors. And I've still got to hook up the exhaust, so it's loud. LOL

It went from this.
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To this today.
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2.5l jeep resized.png (2.07 MiB) Viewed 369 times
Bad things happen FAST!!!

Posts: 210
Joined: Fri Jul 30, 2021 5:49 pm

Re: 0411 running a 2.5L Jeep engine

Postby Cincinnatus » Wed May 18, 2022 3:21 pm

Impressive! Keep posting progress too!

Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Thu May 19, 2022 12:13 am

I'm hooking my fan up and I'm wondering, are the fan wires from the PCM + or do they ground the relay to turn the fan on?
Bad things happen FAST!!!

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Joined: Mon Aug 02, 2010 6:35 pm

Re: 0411 running a 2.5L Jeep engine

Postby Dylan » Thu May 19, 2022 5:07 pm

Ground the relay from the PCM.

Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Thu May 26, 2022 7:26 pm

I given up on using the Jeep throttle body. I just can't get the IAC to work with the GM computer.
The lowest I can get it to idle is @1100 and it's always changing 100 -200 RPM.
I made an adaptor for the throttle body I have from a 2004 4.3L V6 and it works good so far.
It's idling at 650 -700 RPM just like it should be. I'll be installing my wide band and gauge tomorrow so I can start tuning it.
I've turned the MAF off for the moment. I've never done that before and just wanted to see how much it affects it.

After putting the GM throttle body on this engine and how it responded, I think I need to get another one for my 4.0L in my truck, that I'm running on a P59.
Bad things happen FAST!!!

Posts: 63
Joined: Wed Jan 16, 2019 1:34 am
Location: Commerce GA.

Re: 0411 running a 2.5L Jeep engine

Postby Thorwon » Fri May 27, 2022 3:19 am

Here's a short video of it running.
https://www.youtube.com/shorts/kIXigekwo-A
Bad things happen FAST!!!

Posts: 64
Joined: Sun May 11, 2014 6:36 pm

Re: 0411 running a 2.5L Jeep engine

Postby Highlander » Sun Jul 03, 2022 11:55 am

Thorwon wrote:Here's a short video of it running.
https://www.youtube.com/shorts/kIXigekwo-A

Very nice job!

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