An expert who has achieved level 3 by getting 1000 points
An expert that got 20 achievements.
An expert that got 10 achievements.
An expert that got 5 achievements.
Re: how to replace a/c evaporator
You will have to disconnect both hoses. and remove the four retaining bolts. Go to www.autozone.com and register for full free online repair manual with everything you could possibly need for your car.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
On what? Front or rear? You will have to evacuate the AC system using a recovery machine. Most evaporator cores are labor intensive involving the entire dash assembly of the vehicle to be removed for access/replacement. Not a job for anyone who does not have mechanical experience in Ac repairs
This is NOT an easy project, and shouldn't be undertaken under the shade of a tree. You will need a refrigerant evacuation and recovery system (including a vacuum pump), and will need to remove the front casing of the air handler to get to the evaporator core. If the lines to the heater core are in the way, you will need to remove those (necessitating the partial draining of the engine coolant), and possibly removal of the hood so that you can lift the evaporator core from its housing. ARE YOU SURE YOU WANT TO TACKLE THIS?????
This is a pretty major job. The standard labor time to complete this task for an experienced technician with all of the correct tools and equipment is 6.2 hours.
Here are the steps from the service manual:
CAUTION: Perfom refrigerant recovery and verify A/C system pressure is at or below 0 in.Hg. before proceeding.
failure to do so can result in personal injury.
Disconnect the underhood lamp electrical connector, if equipped. Remove the hood. Remove the VCM or the PCM. Remove the coolant recovery tank. Disconnect the electrical connectors from the grille mounted lamps if equipped. Remove the right front headlamp assembly. Remove the front bumper. Remove the right wheelhouse panel. Disconnect the radio antenna cable. Disconnect the electrical connector for the horn. Remove the right fender. Remove the blower motor resistor. Remove the accumulator. Remove the evaporator tube. Remove the evaporator and blower module heat shield mounting screws (Utility). Remove the evaporator and blower module heat shield (Utility).
IMPORTANT: Retain the evaporator and blower module heat shield mounting bracket for installation (Utility).
Remove the evaporator and blower module mounting bolts and nuts. Remove the evaporator and blower module from the vehicle. Remove the six evaporator case section to the blower case section retaining screws. Separate the evaporator case section from the blower case section. Remove the evaporator core from the blower case section.
Dual zone front/rear ac systems have 2 evaporator cores. And 2 orifice tubes, which are just inline filters. Either your front evaporator core or orifice tube is probably stopped up.
Sometimes you can get to the evaporator cores without removing them from the vehicle, and clean it. Evaporator cores do get stopped up sometimes, because the blower motor pulls in air with dust and debris from outside, and the air is cooled when it passes through the evaporator core.
But evaporator cores are a nightmare to replace, you usually have to remove lots of stuff under the dash and lots of stuff under the hood to remove them.
thermastatic expansion vavle in the rear evaporator. If you are familiar and comfortable working on chevy's - Replace the vavle located on the high side line on the rear evaporator. You have to pull the right rear quarter panel. Remove rear evaporator case on bolt valve and replace vavle. Reinstall and charge the system.
very large job by the look of it, can download workshop manual from pdftown.com
degas air cond, drop coolant, remove dash, reomve front seats, remove console, remove heater and evaporator case assembly then get to replace heater core.
as i said big job.