overheating is back

[Y33TREKker]

ok im curious now. i bought the car new and know what has ever been done to it, if my car overheated and heater core was replaced, do they have to add freon to it, maby they had to take off a freon line to do the heater core?

if not how can i get to much freon in the system?

it worked untill last summer and only things done to the car were heater core,theromostat and clutch fan

Only the shop that replaced your heater core would know whether they broke open the A/C system in the process, but normally, they shouldn't have had to. The A/C system is a closed/pressurized gaseous system entirely separate from the heater core/radiator water-filled system.

If they did add freon to your A/C system when they were replacing your heater core thinking for some reason that it would help with the overheating problems you were experiencing, it's like RickOKC said, maybe they didn't properly use/read the gauges made for working on A/C systems and simply overfilled/over-pressurized the A/C system.

We can only speculate on what may have happened and who may have done what, but the important thing is that it sounds like your VX overheating problem has been solved.

[VX KAT]

following this closely as had 2 overheating episodes in a month.

Both around 95 degrees, A/C on , going slow on a trail. Was OK for about a mile, but when I stopped...temp needle maxed. Turned off A/C, heat on max, drove faster on trail...temp came back to normal within a min or two. No doubt due to A/C, air temp, slow speed.

I figure my Kilby skids must prevent some heat from escaping, plus my VX is carrying a fair amount of extra weight full time (tires, skids, sliders, roof rack, cargo basket, f/s spare, hitch, superbumper, JAMAS boxes....and the 2 plastic skids.) That's about 450 lbs.
So that's like 2 real good size passengers..... should be OK I'd think..... Dub probably carries about 1000 lbs freight on board! ....

I have Purple Ice in the coolant which claims to reduce temp a few degrees. With the extra demands I'm putting on it, and the full skids, figure a radiator functioning at peak efficiency would be a really good idea. Since I don't know service history, I'm thinking of doing what zadam did...having radiator prof cleaned.

Could a cleaning/backflush create leaks, similar to when you switch from dino to synthetic?..i.e. cleans out crude that's actually plugging a hole?

Thoughts, suggestions, recommendations?

p.s. pbkid prev suggested cutting a few extra holes in the skids to vent heat, with a backward facing cupped cover (to prevent getting hung up)....but that will cost bigger $$$.....