Can you mess up the evaporator tubing by changing out the ac fan motor ?

cause its burnt out from the worn ac motor drawing too much juice--need a new motor--change the heater core and ac evaporator at the same time-save lotta $

switch is probly toast from fan motor drawing to much amps-cause its worn too--its a major job tu change it-if u du-- change heater core and ac evaporator also to save on future labor--if auto is 10yrs or older------

I am gonna assume its a older maxima 1995-2001??maybe?? those had some harness issues. also there is a small drain tube for a/c drain, which clogs up and water has nowhere to go after evaporator box fills up. after that happens, the water will run on top of the ECM/computer and will flood it and fry it. need more info. not 100%sure what model year it is.

I have a 2002 Chevy Express 1500 replace compressor Orphus tube accumulator new fan clutch hair gets 40 degrees when driving but when sitting at idle goes to 70 degrees I even installed electric fans still does the same thing and cleaned out all degree that is on the front of the evaporator coil what could be the problem

1. Disconnect the VCM or the PCM.
2. Remove the coolant reservoir.
3. Remove the rear coolant recovery reservoir mounting stud.
4. Disconnect the cooling tube from the blower motor.

1. Disconnect the electrical connector
2. Remove the 5 blower motor and tan assembly mounting bolts
3. Remove the blower motor and fan assembly
   Reverse procedure to install. Don't forget that cooling tube. It looks useless but is very important to reinstall.
   

It is at the inlet to the AC evaporator core on the passenger side of the firewall under the hood. This would be the small AC line to the evaporator core that must come off, you will need a spring retainer tool to remove the line and most likely a fixed orifice tool to extract the old one, DO NOT DASMAG THE INLET TUBE TO THE CORE!

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.

Replace fan motor and resistor at the same time to fix it. A bad fan motor will burn out a resistor. Clean drain tube at bottom of evaporator case

It is located in the inlet tube to the AC evaporator core, the tube in deep inside that inlet, the small AC hose (called the liquid line) from the compreessor is what is connected to that inlet tube of the evaporator core, the evaporator core is what cools the air

Ok , I will try to guide you as simple as I can :
1- Remove the Heater / Cooler unit this is how : * Disconnect Battery ground cable
* Recover AC gas or empty it in open space
* Drain radiator coolant only
* Remove instrument panel for access
* From under the hood disconnect AC pipes at the evaporator , by removing bolts , discarding O-Rings and make sure to install blanking plugs so that no dirt goes in.
* Disconnect heater hoses from heater matrix pipes , by releasing the spring band clips and make sure to blank the pipes
* From inside the car , remove driver footwell duct , by removing the screw and then removing the duct
* Remove upper steering column lower fixing , nuts and bolts
* Remove upper steering column upper fixings (Bolts) , and allow column to rest down o the floor
* Cut cable tie which secures console harness to LH blower duct
* Remove LH fan motor duct (screws)
* Remove passenger side footwell vent (nut)
* Cut cable tie securing console harness to RH blower duct.
* Remove RH fan motor duct (screws)
* Disconnect Heater/Cooler Connector
* Disconnect drain tubes from Heater/cooler assembly
* Disconnect A/CCM connectors
* Remove evaporator pipe support bracket fixing.
* Remove Heater/Cooler assembly fixing , by removing lower nut and upper nut
* Remove tape securing RH rear footwell intermediate duct joint. Remove duct to clear access
* Remove tape securing LH rear footwell duct
* Remove Heater/Cooler assembly from car.

2- Remove AC control module 3- Remove evaporator pipe seal plate 4- Disconnect heater tempreture sensor 5- Remove footwell servo motor from heater/cooler unit * Disconnect connector
* Remove screws
* Remove motor complete with bracket
6- Disconnect evaporator sensor connector * Detach heater/cooler connector
* Detach evaporator sensor connector
* disconnect connector
7- By now you can see one upper and one lower case * Remove heater/coolent unit upper case from lower case
* Remove screw
* Remove 15 clips
* Remove upper case from lower
8- Remove evaporator from case * Remove sensor and clip

You are done , make sure to replace all seals that you see to make sure that every thing is ok and you do not have any leaks after installation.
Installation : Reverse order and after installing make sure to do a pressure test to make sure that there are no leaks