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Heater Core Installation for a 1991 Eagle Premier

A heater core in a vehicle is a radiator which contains hot coolant from the engine. The coolant passes through the heater core when the heater is turned on, and releases heat inside the vehicle. The heater core in a 1991 Eagle Premier is part of the heating and air conditioning unit. This requires you to remove the heating and air conditioning unit prior to installing the heater core.

Instructions

1

Disconnect the cable from the negative battery terminal with a socket wrench. Drain the coolant from the radiator, and store it for later use.

2

Discharge the rigerant in the air conditioning system with an approved rigerant recycling machine. This step requires a licensed mechanic.

3

Remove the lower trim cover of the instrument panel with a socket wrench, and disconnect the support rod for the instrument panel. Remove the screw that attaches the electrical wiring harness for the steering column to the instrument panel bulkhead.

4

Disconnect the automatic shift cable from the drive lever with a pair of pliers. Pull the sleeve on the steering column down to expose the universal joint. Mark the steering column shaft and the intermediate shaft so you can align the two shafts later. Remove the mounting bolt connecting the two shafts.

5

Disconnect the mounting bolts on the steering column with a socket wrench, and remove the steering column from the instrument panel. Separate the steering column shaft and intermediate shaft, and remove them from the vehicle. Detach the defroster grille from the the instrument panel.

6

Remove the screws that attach the parking brake handle with a socket wrench, and lower the handle. Detach the ashtray and electrical connector for the cigarette lighter. Disconnect the mounting bolts that attach the instrument panel to the floor. Detach the interior temperature sensor and duct extension from the floor of the vehicle.

7

Detach the hoses from the heater core, and unplug the electrical connector from the coolant level switch. Disconnect the reservoir for the coolant from the heater unit. Detach the electrical connector for the blower motor, and remove the vacuum lines from the heater unit. Detach the rigerant lines from the dash panel.

8

Remove the retaining nuts from the heater unit with a socket wrench, and pull the heater unit toward the rear of the vehicle to remove it. Release the tabs on the heater unit housing, and remove the heater core. Push the new heater core into the housing so that the tabs snap into place. Ensure that the gaskets on the heater housing form a tight seal.

9

Perform steps three through seven in reverse order to install the heater unit into the vehicle. Align the steering column shaft and the intermediate shaft according to the marks you made in step four. Tighten the bolts that fasten the steering column to the instrument panel to 35 foot-pounds with a torque wrench.

10

Recharge the air conditioning system with rigerant. This step requires a qualified mechanic.

11

Attach the cable to the negative battery terminal with a socket wrench. Refill the radiator with coolant, and check for any coolant leaks.

Posted by Unknown at 12:15 PM

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Labels: 1991, a, core, eagle, for, heater, installation, premier