Heater core removal with A\C

Tiny
SPOOKIE001
  • MEMBER
  • 1996 DODGE DAKOTA
  • 5.2L
  • V8
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
Car started only blowing almost warm air, So I flushed with cleaner and attached hose and flushed with hose.
Put new hoses, clamps and anti-freeze. Still almost no warm air.
Is there what is the best way to get it out?
Wednesday, October 21st, 2020 AT 3:56 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

This requires a full dash removal to access the heater housing to remove it just to get to the heater core itself.

https://www.2carpros.com/articles/replace-heater-core

It is an involved job and there are no real short cuts for making the job easier.

I attached some YouTube videos for you. The first 2 are part one and part 2. The last one is a complete.

Make sure the thermostat is working as well. If it is stuck open, it will give low heat.

https://www.2carpros.com/articles/car-heater-not-working

https://www.2carpros.com/articles/replace-thermostat

https://www.youtube.com/watch?v=OBvITqGFVlM

https://www.youtube.com/watch?v=1lVgRs4Dm6k

https://www.youtube.com/watch?v=h_lHRcEXBs8

Roy

REMOVAL
1. Remove the heater-A/C housing. Refer to: "Housing Assembly HVAC : Service and Repair" See: Housing Assembly HVAC > Service and Repair
2. Place the unit on a work bench and remove the housing top cover.
3. Remove the attaching screw from the heater core retaining bracket and lift the heater core from the housing.

INSTALLATION
1. Position the heater core in the heater-A/C housing.
2. Install and tighten the attaching screw to the heater core retaining bracket.
3. Install the housing top cover.
4. Install the heater-A/C housing. Refer to: "Housing Assembly HVAC : Service and Repair" See: Housing Assembly HVAC > Service and Repair

Thermostat

1. Disconnect battery ground cable, then drain coolant to below thermostat level.

Fig. 22 Alternator Support Bracket
imageOpen In New TabZoom/Print

2. On models with A/C, remove alternator support bracket, then partially remove alternator for access to thermostat.
3. Remove upper radiator hose at thermostat housing.
4. Move wiring harness behind thermostat housing out of the way.
5. Remove thermostat housing bolts, then housing, thermostat and gasket.
6. Reverse procedure to install with housing FRONT stamp pointed toward vehicle front. Tighten all bolts to specifications.

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Thursday, October 22nd, 2020 AT 4:27 AM

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