LM4 5.3L and 4L60E swap into 2004 LJ

LBarr2002 · Aug 26, 2020

I got my AC hoses today and it looks like this is all going to work. Had to make a quick run to TSC before closing because the screws that shipped with the compressor were too short for the adapter, but got there just in time.

I didn't uncap the accumulator yet. Tripp is going to come by tomorrow and we'll hook it up and pull a vacuum.

matth_85 · Aug 27, 2020

Awesome. I assume you plan to pipe some auxiliary vents for those of us who are AC poor. Haha

jimbo92 · Aug 27, 2020

matth_85 said:

If you are nice I'll let you come sit on my ac seats for a beer.

LBarr2002 · Aug 27, 2020

jimbo92 said:

I have a pair of these. They work surprisingly well...

https://www.amazon.com/gp/aw/d/B01CIID1FM/ref=ppx_yo_mob_b_inactive_ship_o0_img?ie=UTF8&psc=1

LBarr2002 · Aug 27, 2020

It ain't pretty but it held vacuum and the compressor is wired.

LBarr2002 · Aug 29, 2020

I got cold air!

Thanks again @rolledxj !

The charge was an educated guess and a little trial and error. If I open the system in the future I'll completely drain the compressor and do the oil charges in each component like I should have done...

LBarr2002 · Nov 13, 2021

Finally put the Flowkooler water pump on. Probably won't see if it actually has any affect until the summer. I also have a better flex a lite fan and some shroud flaps to install over the winter.

LBarr2002 · Dec 29, 2021

Since I put the FlowKooler pump on, whenever I press the fun pedal a little too hard the belt would jump a groove to the back and start clicking. It did this several times at Uwharrie and a couple other times just driving around.

The Dave's AC bracket instructions have you put washers in addition to the spacer tubes (circled). Yesterday I pulled those washers out. After that, the belt would walk a groove to the front. Today, I took it apart again and put in washers half the thickness. Seems to be fixed.

My theory is the bosses on the FlowKooler pump that the AC bracket bolts to are a little thicker. In factory applications those bosses are only used to mount the tensioner so alignment is not as critical.

97TJGUZZY · Dec 30, 2021

LBarr2002 said:

Since I put the FlowKooler pump on, whenever I press the fun pedal a little too hard the belt would jump a groove to the back and start clicking. It did this several times at Uwharrie and a couple other times just driving around.

The Dave's AC bracket instructions have you put washers in addition to the spacer tubes (circled). Yesterday I pulled those washers out. After that, the belt would walk a groove to the front. Today, I took it apart again and put in washers half the thickness. Seems to be fixed.

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My theory is the bosses on the FlowKooler pump that the AC bracket bolts to are a little thicker. In factory applications those bosses are only used to mount the tensioner so alignment is not as critical.

glad you figured it out.