AC Always runs!

Really? So the compressor runs full time???? I wondered about that too. So by closing my coolant valve to the heater core I’m getting ALL the cool the AC can do. It will def frees me out.!

 

Thanks again I will consider this question answered! Several in my company are driving glider kits with Siri 60 Detroit and 14 or 15 model Coronado’s. I wonder if the old compressor on those engines matches up Well with a newer chassis that may call for a full-time compressor system. We seem to change compressors quite frequently. Thanks again! Care to discuss my wild swinging temperature gauge?
It has been suggested to me that there is more than one sensor that monitors engine temperature. One of those sensors operates the gauge and another possibly send signals to the ECM and operates dash mounted check engine and warning lights etc. do you know this to be true Or can you explain that system to me?

 

That’s just it. There is no consistency at all. And immediate. I looked the gauge today and it was bottomed out like the engine was off. As I watched and in a milla second it swings over to 240 and sits there for a few seconds then back to normal. No lights no buzzers. Couple seconds later it all repeats and fan and lights come on too. Fan runs for 30 seconds and stops. I’ve timed it 30 seconds every time.

 

There is defiantly a different model compressor on the dd15. More modern in many ways I suspect and lasts longer to by my experience. I’ve been told that there is a new bracket that this new compressor will mount on and also mount to the 12.7 motor. Heard of such a bracket to make this switch?