mustang_gt_350
Veteran Member
Ok, i have been trouble shooting my A/C issue this afternoon. I noticed last year it would work intermittently. If i remember correctly if i would push the a/c button a few times when it wasn't working it would start to work again, then i think it just went to randomly work.
So far i have shorted the low pressure sensor down by the drier and nothing, and the same with the temp sensor on the upper radiator hose, nothing.
I have not hear my fans running in a long time but then again it has been winter and if it was running i wouldn't be able to hear them while driving. But the same goes with the shorting of the temp sensor, no fan and no clutch engagement.
All of the fuses under the dash are good, and the relay does work. However i noticed that if i start the car and push the A/C button i can feel the relay click, and unclick. but after 2 or so pushes it no longer does it. So the ECU must be shutting it out? I'm not sure where to go from here other than the fan controller (under the coolant bottle?) and possible the high side switch and try to short it?
Anyway while looking around i noticed a dark spot on the cover of the clearish plastic lid on this thing mounted on the firewall near the coolant bottle. I opened it and its obvuiosly burnt.. but what is it?
https://ibb.co/m4bRYy
So far i have shorted the low pressure sensor down by the drier and nothing, and the same with the temp sensor on the upper radiator hose, nothing.
I have not hear my fans running in a long time but then again it has been winter and if it was running i wouldn't be able to hear them while driving. But the same goes with the shorting of the temp sensor, no fan and no clutch engagement.
All of the fuses under the dash are good, and the relay does work. However i noticed that if i start the car and push the A/C button i can feel the relay click, and unclick. but after 2 or so pushes it no longer does it. So the ECU must be shutting it out? I'm not sure where to go from here other than the fan controller (under the coolant bottle?) and possible the high side switch and try to short it?
Anyway while looking around i noticed a dark spot on the cover of the clearish plastic lid on this thing mounted on the firewall near the coolant bottle. I opened it and its obvuiosly burnt.. but what is it?
https://ibb.co/m4bRYy