Paul Farquhar Posted June 25, 2015 Share Posted June 25, 2015 I've worked at Mack dealerships for almost 20 years and I agree your dealer is full of BS, you should be able to hang meat in the cab at idle. Unfortunately I can't fix it from here, I have had to replace a couple of control panels on 2015s to repair A/C system drop out, cant be sure this is your problem. I have a 2014 Mack Trident with MP8 535 SCR, it is running twin exhaust and has very dirty exhaust, always soothed and staining chrome exhaust tips, is this normal?Sent from my SM-G900F using Tapatalk Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-294592 Share on other sites More sharing options...
Mackdaddy2030 Posted July 17, 2015 Share Posted July 17, 2015 I was always told to bump up the RPMs when idling for a long time. Heard it was to boost the oil pressure.Now I have a '12 CHU and my blower fan doesn't blow strong all the time. I was told to clean out the box inside, replace the filter and I guess there is a small regulator or something like that underneath there that I should replace. When I get the part I can let you know what the part number is. Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-296871 Share on other sites More sharing options...
Wrongway Posted July 18, 2015 Author Share Posted July 18, 2015 Please do. Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-296972 Share on other sites More sharing options...
riderman523 Posted July 19, 2015 Share Posted July 19, 2015 (edited) I had the same problem on a 2014 mp8..warm when standing still..the dealer installed an engine fan over ride switch that turns on the fan manually. It solved the problem. I have 40-48 degrees at idle now all day long. Edited July 19, 2015 by riderman523 Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-297168 Share on other sites More sharing options...
Wrongway Posted July 19, 2015 Author Share Posted July 19, 2015 Can you give me the name and number of your dealer? I talked to my dealer about doing something like that. They said it couldn't be done. Maybe if my dealer talks to your dealer, they will learn how to do it?!? Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-297172 Share on other sites More sharing options...
riderman523 Posted July 19, 2015 Share Posted July 19, 2015 (edited) H & H Mack Sales Inc. | 80 Green Pond Road, PO Box 693 Rockaway, New Jersey 07866 973-625-3330 Edited July 19, 2015 by riderman523 Quote Link to comment https://www.bigmacktrucks.com/topic/40466-new-truck-no-ac-dealer-says-its-normal/page/2/#findComment-297175 Share on other sites More sharing options...
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