November 16, 2005i was told that my evaporator core might be bad and that is why my ac dont work. I was told i would have to pull the dash to replace it what i was wonting to know is has anyone else replaced theres and if so how bad it was and if anyone knows if there is something else that would go out that would cause the air not to work.
November 16, 2005there are a lot of things that can cause your ac not to work. if they isolated an issue (leak) with your evaporator, then that would have to be replaced 1st.
the dash has to be pulled to r&r an evaporator... maybe not all the way out, but has to be pulled away from the "firewall". ie: not pulled all the way out of the truck cabin, but pulled away. still, a labor intensive job.
November 16, 2005im going to try and have a vacume pulled on it to see what happens then chage it and see if that might be the problem
November 28, 2005I have the same problem, evaporator leaking. I'm following the direction in the Chilton repair manual and so far Iv'e got the most of the dash trim, instruments, glove compartment, radio, windshield pillar pads, steering column dropped, and a lot of electriacal connection disconnected. Been at it for about 4 hours now. I stopped because it's getting dark. I want to make sure there's nothing else connected or attached to the dash assembly when i try to remove it. The repair manual say's to check for ground straps or any other connection when rotating and lifting dash out. Tried to partially rotate the dash before I stopped and there seems to be something holding the top part of the dash. Need to investigate in A.M. Droplites or flashlites don't quite cut it for me when peering under/through the dash. Bad eyes, I wear Bi-focal eyeglasses.
Let know if you are still interested in trying to remove your evaporator. If I'm successful in removing the dash I can pass on whatever I learn from my experience.
November 28, 2005being in the shop daily... i know what it takes for one of these. It will take alot of patience, time, and prolly a bit of beer if your doing this at home.
I am not sure if i have ever done a dakota, but its quite similar for each one. some basics... First of all, recycle the refrigerant out of the system, then vacuum it. Now for the inside... Bolts right next to where the windsheild meets the dash, and at least 2 on each side by the a pillar and the dash (you might have to peel the weatherstrip away). you will need to disconnect every connector that is attatched to the ports under the drivers side dash that hook up or are attatched to the dashboard... and make sure that you remember where they go. Make sure you disconnect the battery, as you may have to remove the airbag connector. You will definately want to hook up the battery last after all is said and done if this is the case. Next you will probably have to drop the steering column, normally 4 bolts. By the drivers side right floor where it meets the center console , peel back the carpet. there may be a groundstrap and a connector or two. Disconnect those. Make sure all the connectors are disconnected on the passenger side, and the bolts out by the a pillar. Heres the fun part. if you have hoses going through the firewall into your heater core, you will need to clamp those on the engine compartment side of the firewall, and disconnect them from the heater housing. Then you can gently pull the passenger side of the dash out. You should be okay if you pull just that side of the dash out and rest it on the seat/ center console. Take the heater box out, take all 3432023 of the bolts out (okay, so I exaggerated a little), and replace that little guy that prolly smells, looks bad, and leaks stuff. Make sure you put the new sticky pads where they go on the new evap. (see the old one for reference).
Put that guy back together, put it back in its place, hook up the hoses. Put the dash back together, and turn the key to the on position (not run, just on). Go in front of the car, and hook up the battery. Make sure your outside of the car, in case anything happened with the airbag. Don't want it blowing up in your face. If it doesnt go bang when you connect the battery, it wont after that, so dont worry.
Re vacuum your system just to be safe, and then charge it with refrigerant. It should say around the radiator on a sticker as to how much refrigerant is required. Once that is charged, start the car and test it out.
Hope that fixes it.
If you want to check to make sure there arent any leaks anywhere else, just recycle the system, vacuum it, pour dye into one of the visible AC line ports and then charge. It will show under a blacklight if there is a leak somewhere else.
hope everything works out well.
I havent done too many, but i have done alot of jeeps, sebrings, 300's, etc.
November 29, 2005Thanks DetroitGTX, It took all day but I finally got the whole unit out of the truck (A/C & Heater) Like you said patience, if you never done this before. You would think with all the work thats required to remove the unit, you would think they would make it easier. I'm wondering what it would cost to have a shop do it?
I sure hope the install goes easier than the removal since I got a better idea of how everything is put together.
November 29, 2005should be easier.
Memory is key.
Uhhm... i know that labor op time is like... 7 hours or something?
although it only takes us around 2 or so, thats just part of the commission job. though your not supposed to know that
you'd be well over 500 dollars in labor costs, thats for sure. Parts... not so much. no more than 100.
You can see where the dealerships make their money. Not parts, by any means.
out of curiosity, did anything i say resemble what you did?
November 30, 2005I guest it wasn't that bad. I replaced the evaporator and had it installed and the dash reassembled in 4 hrs. It was kinda of what you said. However, there weren't any vacuum hoses. All the dampers/flappers are controlled by electric motors. Like you said experience is the key. I pulled vacuum on it for 30 minutes, and watched for any drop. 1 Hour later still at 29 inches. Thanks for you help.
November 30, 2005no problem. much easier if you have an expensive AC machine... but thats a different story.
Glad everything worked well.
Wasnt sure on the hoses... it all depends on the car/truck.
December 2, 2005im about to have my evap. replaced... while im not looking forward to doing it myself.. im not looking forward to paying to have someone else do it either