heater core and evap core replacement - Jeep Garage - Jeep Forum

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Old 05-10-2017, 10:03 PM
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heater core and evap core replacement

Well I finally decided to replace the heater core and evaporator core. The heater core was just smelling but not leaking into the floor board yet but I figure that the anti freeze smell was a good warning.

Got a mopar heater core from amazon and a evap core from amazon too. Pulled the dash out starting with the console and then the steering column and then the lower dash covers and then finally the dash came out.

Pulled the heater box out and the hardest part of the job was getting the heater hoses off of the old heater core and getting the squeeze clamps to slide up the heater hose. There is no room with that V8 in there. Got the a/c lines off fairly easy and one bolt from the engine compartment and the other two were nuts on the inside and the heater box came right out.

The heater core basically has a few little holders and it just slides right out and it was slightly leaking so i'm glad that I decided to go ahead and tackle this project. The evap core was a little more work to swap out. The heater box had to be split apart which wasn't a big deal really since it's out on the ground where you can work with it easily.

Swapped the evap core out and cleaned out the pine straw that had gathered up where the evap core goes in the box. Also wiped out where the heater core slides into the back of the box too.

Got the heater box all back together and ready to go back into the jeep and it went back in pretty good but hooking the heater hoses and the a/c lines back up was aggravating to say the least. My left forearm has been messed up for awhile and I don't have much strength in it but I keep pushing it the best I can.

Finally got the heater hoses and the a/c lines hooked up and the hose clamps back in place. Got the heater box in at least and it got dark on me so I decided to continue on it tomorrow.

Getting the dash back in will be a chore but the worst of it is done I hope. Once the dash is back in place the rest of it should go back together fairly easy.

I didn't do too bad time wise, I started on it about 5:30 ish and got it all apart and the new parts in and the heater box back in and was in the house about 9 ish. Maybe a few more hours tomorrow and I will have it back together and this project will be behind me!!!

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Old 05-11-2017, 09:56 AM
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Re: heater core and evap core replacement



good job theres a few videos on this
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Old 05-11-2017, 10:39 PM
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Re: heater core and evap core replacement

Have never watched the video on it, had help on the first one I done and after the third one I just jump in there and start taking it apart. I didn't get home as early as I wanted to today and once I did get home I cut up some insulation for the heater duct to dash seal and glued some new insulation in place.

One of my co-workers was close by and wanted to check out my old car. I told him to swing by and I would dust it off so him and his son could check it out. Took it a cou[ple of tries to start up but the old dodge finally fired off. I let it run a few mins to warm up before they showed up and when they did get here he liked it pretty good.

I've had it for almost 18 years now and it's always a work in progress but these days a 69 charger is hard to come by and it's a pretty nice old car too. After a joy ride down the road and back I went inside for a bite to eat and headed back outside to get back on the jeep dash and a couple of my brothers buddies were out there checking the car out.

Finally got to start on the jeep way later than planned but me and my son got the dash back in and got the passenger side put back together and made my way to the driver side and got the column and all of that side back together. It was after 10 o clock and I got all the dash back together but didn't get the console back in just yet.

I am wanting to do some vacuuming and cleaning on the console before I put it back in and I still have to pull a vacuum on the a/c system and re-charge it too. Got some rainy weather coming in tomorrow so maybe saturday I will have it back up and going again.......
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Old 05-12-2017, 09:18 PM
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Re: heater core and evap core replacement

Well the rain held off better than I expected today so when I got home I hooked the vacuum pump up to the a/c gauges and pulled a vacuum on the system for about an hour while I cleaned up the console and vacuumed the front floorboard out and vacuumed around the shifter and the parking brake handle real good. Got the console back in and was letting the gauges hold vacuum on the system while I put all the screws back into the console. Put a couple of cans of freon in and ran it awhile and checked for leaks.

So far so good, no coolant leaks and the a/c is really good and cold. Drove it out to eat and back home and all seems well. I have been putting this off for a long time and hopefully I won't have to do a dash removal for awhile. It's not the worst job ever but it's kinda slow go and tidious working with all the plastic parts.....
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