TC KER Posted July 27, 2020 Share Posted July 27, 2020 Does the 1990 3.0 TC have a cabin filter for the A/C? Link to comment Share on other sites More sharing options...
Reaper1 Posted July 27, 2020 Share Posted July 27, 2020 No, none of these cars do. 1 Link to comment Share on other sites More sharing options...
TC KER Posted July 29, 2020 Author Share Posted July 29, 2020 Thank you............. Link to comment Share on other sites More sharing options...
TC KER Posted February 10, 2021 Author Share Posted February 10, 2021 1990 TC 3.0 Liter. The heater works as does the defroster, floor, bi-level and panel buttons. The push button to turn on the A/C stopped illuminating blue and simultaneously cold air stopped coming through the vents. Has anyone experienced this or are there any suggestions for the fix of it? Link to comment Share on other sites More sharing options...
TexasJohn55 Posted February 10, 2021 Share Posted February 10, 2021 Sounds like a blown fuse, no power to switch? Link to comment Share on other sites More sharing options...
TC KER Posted February 10, 2021 Author Share Posted February 10, 2021 Thanks for the info TexasJohn; any chance that you would know where that fuse would be? The 30A fuse under the steering wheel for the A/C is good; I pulled it out and it appears that it is for the fan that blows air out the vents. Link to comment Share on other sites More sharing options...
TexasJohn55 Posted February 10, 2021 Share Posted February 10, 2021 (edited) I don't have a clue, don't you have a book or a fuse panel legend at the panel? You are in the right forum, maybe someone who can help will check in. I know nothing about the marque, just trying to get you headed the right direction. You may have to consult a wiring diagram. Edited February 10, 2021 by TexasJohn55 (see edit history) Link to comment Share on other sites More sharing options...
wild bill Posted February 12, 2021 Share Posted February 12, 2021 Hi TC KER, I am no car repair guy, but wonder if a low ac charge would cause this? Link to comment Share on other sites More sharing options...
mensanguy Posted February 12, 2021 Share Posted February 12, 2021 Look at the dampened pressure switch. It is located on the left side of the engine bay close to the receiver dryer. It has two wires attached to a pressure switch on a A/C line. If it is bad, it can be removed from the system without losing your charge because it has a Schrader valve behind it. If you jump it out and then your ac runs, that is your problem Link to comment Share on other sites More sharing options...
Hemi Dude Posted February 12, 2021 Share Posted February 12, 2021 He has the kind of switch that screws into the Expansion valve and is under refrigerant pressure, not the dampened pressure switch which can be removed without freon loss. Link to comment Share on other sites More sharing options...
TC KER Posted March 22, 2021 Author Share Posted March 22, 2021 I had an a/c guy do this project and it was indeed the cut-off switch that went bad. Yes Hemi, the switch is screw-in on the expansion valve and he did exactly what you said in our private message which was to replace the switch and fill the system. The system was low on refrigerant so the compressor wouldn't kick on and the 30amp fuse was not the issue; all is working good now. The pictures attached are of the switch pulled apart after I cleaned a pool of oil out of it and the picture Hemi sent me of the cut-off switch. Link to comment Share on other sites More sharing options...
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