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How do I replace the a/c evaporator in my truck?

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  • Dodge Master
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Why replace it? the Evaporator is inert and can only fail from physical damage. The job requires special training and tools, take it to a qualified shop.

Posted on Sep 17, 2010

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How to replace evaporator ?


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

Jul 01, 2015 | Cars & Trucks

1 Answer

1998 Ford Taurus LX Evaporator


The evaporator is that finned radiator under the dash The tx valve is plumbed into the pipe going into the evaporator and has a fixed hole. The tx valve is controlled by the thermostat that is located in the fins externally on a small metal tube. If you have temp problems replace the thermostat first

May 05, 2013 | Ford Taurus Cars & Trucks

1 Answer

I have a 1999 Toyota Rav4 that has evaporator leak so the air conditioning system is not working. How do I repair or replace the evaporator and what tools and chemicals do I need for repair?


You must remove the entire dash of the truck to replace the AC evaporator core. This is not really a do at home job. Time to complete is about 14 hours. You need special tools and a factory repair manual to get it all back together correctly.

Oct 31, 2012 | Toyota Cars & Trucks

1 Answer

Where is the expansion valve on a 1996 dodge dakota.


look to the high pressure hose (big size) ,and low pressure hose(smal size) this two line gose to evaporator inside cabin. this two they must come together with expansion before evaporator. this valve have two inner line (small &big) with small difram adjuster this fixed adjuster you can;t adjusted . this valve to make balance between high and low to keep fit pressure inside evaporator , this always replace when case of damage evaporator and coming with new evaporator , if you have no problem with evaporator Don't replace it

Jul 09, 2011 | Dodge Dakota Cars & Trucks

2 Answers

How do you replace the evaporator core for the a/c? on a 1994 gmc p/u truck, I've already have the dash out having promblems removing the duct work, what's next? or is there a maunal that will show me.


your instructions are on how to replace the condenser on a 1994 gmc sierra but the title says it is the directions for replacing an evaporator. please correct your title.

Aug 08, 2010 | 1994 GMC Sierra

1 Answer

I have compressor oil leakage coming from the evaporator area but can't see where its coming from. What problem can I look for?It is on a 1972 chev truck. I have opened the evaporator cover but cannot see...


If oil is coming form the evaporator box, the evaporator is leaking, period. Replace it, and the drier. Evacuate and recharge the proper amount.

May 30, 2010 | 1978 Chevrolet C1500

1 Answer

Which way does the orifice tube go? Orange end or white end to the firewall?


9 is the orifice. Freon is headed toward the evaporator in the car. The orifice has an arrow on it. Good luck, please rate. Thanks A/C Evaporator Core Orifice NOTE: The A/C evaporator core orifice (19D990) should be replaced whenever an A/C compressor (19703) is replaced.

The A/C evaporator core orifice has the following characteristics:
  • is color-coded orange
  • has a diameter of 1.46 mm (0.058 inch)
  • is located in the condenser to evaporator tube (19835)
  • has filter screens located on the inlet and outlet ends of the tube body
The A/C evaporator core orifice is the restriction in the refrigerant circuit that creates the pressure drop necessary for cooling by metering the flow of liquid refrigerant into the A/C evaporator core (19860), which reduces the pressure. Operation is as follows:
  • The inlet filter screen acts as a strainer for the liquid refrigerant flowing through the A/C evaporator core orifice.
  • O-rings on the A/C evaporator core orifice prevent the high-pressure liquid refrigerant from bypassing the A/C evaporator core orifice .
  • Adjustment or services cannot be made to the A/C evaporator core orifice assembly. It must be replaced as a unit.


A/C Evaporator Core Orifice

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May 02, 2010 | Ford Taurus Cars & Trucks

1 Answer

2000 BMW 323ci-Evaporator core replacement


Yes I know how to replace the evaporator core. It involves getting into the passenger side dash because it is pretty much where the heater core is for the heating system

Jun 11, 2009 | 1998 GMC Jimmy

1 Answer

Where exactly is the orifice tube located at on a 1996 (DOHC v6)?


it's in the high pressure liquid line.

A/C Evaporator Core Orifice The A/C evaporator core orifice (19D990) should be replaced whenever the A/C compressor (19703) is replaced for lack of performance (internal damage). The A/C evaporator core orifice, located in the condenser to evaporator tube (19835), cannot be serviced in detail as a component of the line. If replacement is necessary, follow the procedure outlined for Liquid Line Removal and Installation. An orifice tube replacement service kit may be used as an optional service procedure. Refer to Section 12-00 for information regarding the use of an A/C Evaporator Core Orifice Replacement Kit E5VY-19D695-A.
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A/C Evaporator Core Orifice Replacement Kit Installation
  1. Discharge A/C refrigerant system. Refer to System Discharging and Recovery as outlined.
  1. Remove condenser to evaporator tube (19835) from vehicle.
  1. Locate A/C evaporator core orifice (19D990) by three indentations or a circular recess in metal portion of the condenser to evaporator tube.


    A/C Evaporator Core Orifice Location
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  1. Note angular position of ends of condenser to evaporator tube so that it can be reassembled in correct position.
  1. Cut a 63.5 mm (2.5 inch) section from condenser to evaporator tube at A/C evaporator core orifice location. Do not cut closer than 25.4 mm (1 inch) from start of a bend in tube.


    A/C Evaporator Core Orifice Section Removed From the Liquid Line
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  1. Remove contaminants from the two pieces of the condenser to evaporator tube.
  1. NOTE: The inlet half of the condenser to evaporator tube will be positioned against the A/C evaporator core orifice tabs when correctly assembled.

    Lubricate fitting with clean refrigerant oil and assemble orifice tube kit (with A/C evaporator core orifice installed) to condenser to evaporator tube. Make sure flow direction arrow is pointing toward evaporator end of the condenser to evaporator tube, and taper of each compressor ring is toward compression nut.


    A/C Evaporator Core Orifice Kit Disassembled Components
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Jun 05, 2009 | 1996 Mercury Sable

1 Answer

Evaporator


The following is a general removal procedure of A/C evaporator core. The evaporator is removed differently from different vehicles.
For example, a 1994 Ford Taurus/Mercury Sable instructs you to, "Using a hot knife, cut the top of the air conditioning evaporator housing between the raised outline."

Use a hacksaw or a hot knife to cut the case. Reprinted with the permission of Ford Motor Company.
But a 1993 Ford Probe manual says to simply remove the blower motor and assembly screws before separating the case halves and removing the evaporator.




The following procedure assumes that access to the evaporator has been determined.
  • Recover the refrigerant.
  • Drain the radiator if the heater hose(s) has to be removed to gain access.
  • Remove the heater hose(s), if necessary.
  • Remove any wiring harness, heat shields, brackets, covers, and braces that may restrict access to the evaporator core.
  • Remove the liquid line at the thermostatic expansion valve (TXV) or fixed orifice tube (FOT).
  • Remove the suction line at the evaporator or accumulator outlet.
  • Gain access to the evaporator core as outlined in the service manual.
  • Lift the evaporator from the vehicle.
  • Drain the oil from the evaporator into a calibrated cup.
  • For replacement, reverse the preceding procedure. First, replace the oil with the same amount and type you previously drained.

Jan 10, 2009 | 1984 BMW 7 Series

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