flyinhigh97 Posted September 10, 2014 Share Posted September 10, 2014 I am new to Macks so anything you can tell me will be helpful. 1st: I see people talking about pulling the codes. On my Sterling it had a Diag. Option on the Odometer readout. How do I pull codes on this truck? 2nd: The truck either looses boost or it won't make boost at very inopportune times. It isn't always consistent but usually pull g a hill loaded or taking off from a stop sign it "flutters" the boost . 3rd: I have only been driving this truck for a year and a few months. I have never heard the clutch fan kick in. Now this is a 2 part problem. When I run the AC it freezes up when I stop at a light or am getting loaded. (This is a Roll-Off Truck) So what I did was unplugged the fan which ran it at 100% before turning on the AC and like magic the AC works fine. Plug it in and it freezes up. I wanted to install a override switch but was told it isn't possible on a Mack? Any help is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
j_martell Posted September 10, 2014 Share Posted September 10, 2014 1st: I see people talking about pulling the codes. On my Sterling it had a Diag. Option on the Odometer readout. How do I pull codes on this truck?Key on, motor running or off, cruise on, push and hold set/resume switch. Count the CEL blinks for the blink codes. X-X are the flashes with a pause in between. Or take it to have it scanned Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment Share on other sites More sharing options...
flyinhigh97 Posted September 10, 2014 Author Share Posted September 10, 2014 Thank u very much. Next time I get a light I will try it. Quote Link to comment Share on other sites More sharing options...
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