Vince_Hayduk
Registered User
I'm troubleshooting a "running a little too warm" problem on my '94. I know SCs run warm, but mine is getting up to the M in NORM and it's only 20C (70F) outside.
1) The automatic climate control works functionally as it should, but it won't turn off and the AC clutch is always powered (even when the control is in the "off" position). I've unplugged the AC for the time being because of problem #2, but obviously something isn't right here. The previous owner said he corrected a similar problem by replacing the climate control unit. Does the car have two lemon control units or is there something else that might be going on here?
2) My rad fan never turns on! It looks tired and doesn't turn easily, so I will be replacing it with one from a Taurus which people have said moves LOTS of air, but here is the part I'm not sure about: I have an scanner and it says that both the low speed and high speed fans are "off", yet the coolant temp was over 221 and the AC was on (see above) so at least the low speed fan should have been running. My question is this: when the scanner says "off" for a fan, does that mean the ECU hasn't set it to come on yet OR does it actually have feedback from the relays and it's telling me that I have a bad IRCM or wiring problem? The rad fan doesn't come on during the self test.
3) Should the pusher fan come on during the self test for a second? Mine does!
p.s. I know about cutting wire 14 on the IRCM. I am putting a switch in to achive that, but I also want to get the stock system working again!
TIA!
Vince
1) The automatic climate control works functionally as it should, but it won't turn off and the AC clutch is always powered (even when the control is in the "off" position). I've unplugged the AC for the time being because of problem #2, but obviously something isn't right here. The previous owner said he corrected a similar problem by replacing the climate control unit. Does the car have two lemon control units or is there something else that might be going on here?
2) My rad fan never turns on! It looks tired and doesn't turn easily, so I will be replacing it with one from a Taurus which people have said moves LOTS of air, but here is the part I'm not sure about: I have an scanner and it says that both the low speed and high speed fans are "off", yet the coolant temp was over 221 and the AC was on (see above) so at least the low speed fan should have been running. My question is this: when the scanner says "off" for a fan, does that mean the ECU hasn't set it to come on yet OR does it actually have feedback from the relays and it's telling me that I have a bad IRCM or wiring problem? The rad fan doesn't come on during the self test.
3) Should the pusher fan come on during the self test for a second? Mine does!
p.s. I know about cutting wire 14 on the IRCM. I am putting a switch in to achive that, but I also want to get the stock system working again!
TIA!
Vince