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Drain the radiator. disconnect the heater hoses as they go through the firewall. From inside of the cab, remove the heater core housing, then the core. Reverse the procedure to finish the installation.
Motorweek - 1987 Porsche Panamera 29-4 was released on: USA: 25 September 2009
Motorweek - 1987 Porsche Boxster 26-15 was released on: USA: 15 December 2006
When engine is cold of course, drain your coolant, Disconnect the negative battery cable, remove the heater hoses at firewall, disconnect the operating cables from the heater vent housing under dash, and disconnect the defroster duct. Now under the hood again, disconnect the wire from the blower motor, and remove the nuts that hold the heater housing to the firewall. Then under dash, remove the heater housing by tilting it downwards to clear the defroster duct, and back towards passenger seat. Remove the housing cover from the firewall side of the housing and remove the heater core. Clean the housing and install new heater core and assemble in the reverse of dis-assembly. Don't forget to put coolant back in after it is back together!
find the two hoses that run from the engine block to the firewall, they should be about the thickness of a garden hose. Disconnect both of them from the firewall and connect them together. No water will ruin in to the heater core=no heat or leakage.
Motorweek - 1987 Porsche 911 GT3 29-32 was released on: USA: 9 April 2010
Motorweek - 1987 Porsche 911 GT2 27-35 was released on: USA: 2 May 2008
Motorweek - 1987 Porsche 911 GT3 26-32 was released on: USA: 13 April 2007
It's basically behind the radio inside the cab. This is what you do: 1 Drain the coolant. 2 Disconnect the negative battery cable. 3 Disconnect the heater hoses at the fire- wall 4 Working in the interior, remove the radio, if equipped 5 Disconnect the control cables from the heater unit assembly. 6 Remove the air flow ducts from the sides of the heater unit assembly. 7 Remove any electrical connectors and vacuum lines. 8 Remove the four heater unit assembly mounting screws and pull the unit out 9 Once removed, the heater core can be detached from the heater unit assembly 10 If the heater unit assembly must be dis- assembled in order to reach the heater core, disconnect the rod from the swivel joint and the cold position lever control. Remove the screws that retain the heater core cover and remove the heater core. Note: During reassembly, the control rods must be adjusted.
The heater core in a 1987 Chevy Celebrity is in the heater plenum to the right of the hump and below the glove compartment.
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Under the glove box, look up under from the floor and you will see it bolted to the junction box, disconnect the battery then the wires to the fan, pull three bolts and out she comes