I am in need of some guidance with a 5.3 swap with ax-15 transmission.

[mcclain92]

What would be the best way to get the 5.3 to play nice with a 5 speed manual? I was able to get my engine running and idling fairly well, but as soon as I barely start to come up with the clutch it immediately tries to stall. Any advice on a good starting point would be greatly appreciated. Thanks! Whoops, forgot to add that it's a 5.3 from a 2004 Suburban.

[dhoagland]

You need to Post your Tune, and Log file of this happening.

[mcclain92]

Jeep cherokee 5.3L 2 Fans enabled and HO2S B1&B2 S2 disable.hptfirst drive.hpl

[dhoagland]

Please post up the tune too
There is a possibility you might need to find a 5.3 Manual Trans file with the same OS and segment swap (I'm green with Swaps), Obviuosly if it was an Auto swap with a manual file a Segment swap would be a Must

Cable or Electric Throttle Body?

Need to get the codes pictured taken care of
The whole log you never go closed loop, maybe the o2 heater error will prevent closed loop

[Alvin]

One of the first issues is the idle speed is pretty darn low for a manual trans. Typically they are a touch higher than a auto vehicle.

You won't have to do a segment swap or swap the OS but the results might be a little nicer if you start iwth a manual file. If you can't start with a manual file change the transmission type to non electronic auto or manual. Zero out all torque management too.

[mcclain92]

Jeep cherokee 5.3L 2 Fans enabled and HO2S B1&B2 S2 disable.hpt

Sorry, I thought I did attach the tune. Should be here now. This is my first time tuning something with a computer, so I definitely have very little understanding of what I'm looking at/for. It has an electric throttle body that as far as I can tell is functioning correctly and smoothly. Yes, I agree with the O2 codes being an issue and that's something I'm going to address today. I have done a segment swap for just the transmission control part from a 4.8 liter Silverado, but I'm fairly sure that it'll take more than that though as there are some pretty noticeable differences between the engine control of the two. Haha, well, more than just being a 4.8 vs. a 5.3 anyways.

[mcclain92]

I'll bump up the idle and get rid of torque management and see what happens. As far as I can tell, there are were no stock manual 5.3's so what would be a good choice for a segment swap? Thanks!

[dhoagland]

I'll wait for Alvin to jump in, he has much more experience with this.

If I understand Correctly you already swapped in a manual segment from a 4.8?
I'm guessing that should be okay, but he will know for sure

[Alvin]

You should be able to bring over the trans trans diag and the speedo section wouldn't be a bad idea from the same OS 4.8 Manual truck. Leave all the engine stuff alone except for raising the idle.

But this isn't 100% required. Truck 5.3L's are so popular for hotrod swaps and I don't take any special steps when they come in with a manual. A manual will be fine behind a auto OS.

[mcclain92]

Thanks for the help! It actually drove around under its own power! Haha, I'm not sure what fixed it. I through so much crap at it something was gonna stick. Also, my O2 problem seems to have resolved itself after I hit it with the multimeter and found no faults. Now I just need to finish hooking up the EVAP stuff and I should be good to go. Again, thank you for the help!