I would replace the metering device , Expansion valve before anything else-That controls how much refrigerant enters the evaporator. I would also evacuate what refrigerant you have in the system with a proper vacuum pump to remove any moisture that might have entered the system when using the...
These were around years ago as aftermarket driveshafts but the one I bought on my 04 vibrated and I sent it back - Now I just rebuild the stock one when needed.
I ended up buying 2 used spares since I plan on keeping my Jeep - You are right how the pump sits in the tank is not like other years with the dumb 2 piece design.
Look at some of my previous posts with my p0456 code on my 04 KJ, It ended up being the plastic piece on top of the fuel pump had tiny cracks - had to drop the tank and purchase a used one from the bone yard since new was no longer available.
With my 04 I had a po456 that I could not be located w/ smoke or visual inspection, wasted money by changing parts -canister - and every other part in the evap. system, finally dropped the fuel tank and found the plastic bushing on top of the tank had small cracks causing the small evap leak...
Soon after I bought my Jeep back in 2004 I started getting this code even though it ran perfect - the dealership pulled the heads and found some pitting with the valves - 200k since the repair and it runs perfect - I always commend the Chrysler dealership for their warranty work, My son's dealer...
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