Question: C68 Electronic Climate Control

[TedC]

Could someone with the C68 ECC digital option for an earlier C4 (pre 1990) verify if their climate control does the same thing? If I adjust the fan speed in manual mode greater than 01, it resets back to 01 when I turn the ignition off and then back on. Everything else seems to hold to the last used setting (i.e. temp setting, vent control mode). When I first purchased the vette, I thought it maintained the last used fan speed.

 

[Vettefan87]

I think mine drops down to one or zero, not sure. I wondered about that to, all the temp settings stay the same but the fan speed does not.

 

[TedC]

vettefan87, Appreciate the feedback. Mine will display 01 most of the time. Once in a while it will display 00. This is odd because the LED light is still on ECON, and I can't drop the fan down to 00 unless I select OFF. I was thinking of pulling the dash unit, clean the contacts, and check the solder joints.

 

[tonylong]

vettefan87, Appreciate the feedback. Mine will display 01 most of the time. Once in a while it will display 00. This is odd because the LED light is still on ECON, and I can't drop the fan down to 00 unless I select OFF. I was thinking of pulling the dash unit, clean the contacts, and check the solder joints.

I replaced my head end unit but managed to break the %^%$$#$% plastic clip that holds the cable to the head unit. Now it sometimes blinks out and/or resets to AC at 75 degrees. Be careful the retainer is not a part I could ever find, if you find one let me know.

The new head unit works find except for the above.

 

[Vettefan87]

Yeah I know mine needs cleaning. Half the time the display will not light up and I have to push the buttons several times to get the readout.

 

[joshwilson3]

Most of the time when I start the car, the fan speed will read 00, and it won't let me change the fan speed for a few minutes. And sometimes, when I start it up, I can change the fan speed immediatly.