Ok ok ok. The real update here. The dyno tune turned out great. I not sure if I’m 100% happy with it but it’s close. The computer and trans are still learning so I hope it gets a bit better in time. The tuner removed the transmission code that was putting me in limp mode. I guess the ECM didn’t like that the TCM was turning off with the key instead of with the power train relay which would be controlled by the ECM from GM. So now it shifts great every time.
The one dyno shot I took. They wouldn’t let me get any closer.
So I got it home and it set for a few days. I finally got around to looking at the rattling noise we heard. To me it sounded like the transfer case. I did some reading and found out that 5w-30 is supposed to be a better option in these cases than ATF-4. They run smoother and quieter. So I dropped the brand new AFT I had in there and put in the 5-30. Took it for a drive and found it made no change to the rattle. I then went after the rear driveshaft and found a small bit of play in the slip yoke splines. I pulled it apart and packed it with grease. It helped for a few light pulls up and down my street then went back to rattling. I opted to replace it.
Big shout out to
@Agility Customs who got a Toms Woods CV shaft headed my way for a great price.
While I waited for that I noticed my right rear wheel seal started to leak. So I jumped on that and got a new seal and bearing installed. Parking brake shoes and pads looked great so I didn’t mess with them.
The driveshaft showed up last night and I got it installed tonight.
WOW!!! The first 2-3 passes down my street were great. This thing drives so smooth. The rattle is gone and I now felt more comfortable getting on it. This was the first real drive since the tuning. It drives really well. We then did a few 3/4 throttle hits. In first gear it’s just stupid. The whole front of the jeep goes sky high. The front left tire has to be close to lifting. Rolling through first to second then hitting it throws you back. You can really feel the torque that way. My son and I were both just giggling. It was so much fun.
Then I got Livy and took her for a drive doing the same stuff. She loved it. I then swapped seats with her. She had a blast driving it. It drives great. The three link on the front axle is not noticeable. So far it seems to drive no different now, at least steering and suspension wise.
Things left to do:
-Tach is not working right.
-Tap shift is not working.
-Need to change the VIN to the Jeep VIN in the GM ECM.
-Need to get emissions done so I can register it again.
-Build A/C lines from the compressor and drier.
-Install heater hoses with heater core bypass ball valves.
-Loom wiring harness once I know it’s all right.
-Install Christmas winch.
-Rubicon trail.