Question about 1990 Ford LTD Crown Victoria
No lie, it is a bit involved as it is buried deep in the dash, several pieces of the interior need to come out first. Here we go, I'll try to keep it as condensed as possible...It can help also if you have the wheels straight before you begin
1) disconnect the negative battery cable, wait a minute or two (precaution preventing airbag deploy)
2) drain the cooling system and disconnect the hoses from the inlet/outlet tubes of the core
3) plug the heater core tubes
4) remove the nuts that hold the left side of the plenum to the firewall (there should be three of them, under the wiper motor)
5) Remove one nut on upper left corner
6) disconnect the two vacuum lines and push them through to the passenger compartment
7) Take off the instrument panel trim moldings and the panel insulators
8) Remove the upper and lower steering column covers and disconnect the gearshift lever cable from the gearshift lever
9) Remove the steering column support brace, remove the bolts holding the steering column to the instrument panel and lower the steering column as far as it will go, and support it
10) Open the glove box, on the left side remove the bolts holding the instrument panel to the dash brace
11) Remove the left and right side cowl trim panels, remove the bolts on each side holding the instrument panel
12) Remove defroster grille
13) support the instrument panel and remove the instrument panel to cowl retaining screws
14) pull the instrument panel back as far as you can without disconnecting any wiring
15) remove the cross body brace
16) disconnect the wiring harness for the temperature blend/door actuator and disconnect the temperature control sensor tube from the evaporator case connector
17) disconnect the vacuum harness from the multiple vacuum connector (near the floor distribution duct)
18) Disconnect the vacuum hose from the outside/recirculating door vacuum motor
19) Remove the floor distribution duct
20) Remove the nuts along bottom edge of plenum
21) remove the plenum ensuring that all parts clear the dash panel (no snags or impromptu disconnects)
22) Once you have the assembly out, remove the screws holding the heater core cover and remove the core
In a nutshell, there it is. unfortunately, I do not know an easier way. This part is buried in there, not all cars are like this, but on the crown vic, it is.
Posted on Jun 04, 2011
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Posted on Jan 02, 2017
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