Air Conditioning

[mwilson]

I think that I have a 2014 completely dressed warranty take out "B" in the warehouse, it is Freightliner spec but will give a good view of the turbo plumbing.

I'll go out Monday and have a look.

Mike.

 

[RDeFayette]

I will double check it, don't want to give out bad info for sure.

Mike.

I "think" I found it over on CumminsForum. Try these.
http://www.cumminsforum.com/forum/0...general-discussion/1160994-ac-experiment.html
http://www.cumminsforum.com/forum/0...2773-need-help-please-finding-old-thread.html

http://www.cumminsforum.com/forum/0...wertrain/437671-love-my-truck-haaaaate-c.html

 

[CBlack]

I thought that I had worked that out as well. I am booked solid until the first of the week, after that I will go find that post. I had the Cummins block water flow diagrams and everything in it.

Mike.

I remember seeing that thread. I'll seach myself as well.

Thanks!

 

[CBlack]

Found it. https://www.turbodieselregister.com...-in-under-25-min?highlight=heater+core+bypass

Have it on my subscription list for future reference now.

 

[CBlack]

OK, so I've been able to get some information regarding performance.

Left home Tuesday morning and the outside temperature was around 80 degrees, plus my truck was in the shade so it was even cooler. Drove to Carquest and bought a thermometer. Granted it was already fairly cool inside the cab, within 5 minutes it showed 44 degrees or so in the vent. Drove to Houston and it stayed pretty consistent.

The temperature here in Houston has been in the mid 90s the past two days. Leaving my truck in the heat with the windows cracked and a sunshade in the windshield, the thermometer showed 100-110 degrees. It took 30 minutes to get down to 45-50 degrees (hard to really read where it was, but it was closer to 50). And never really budged from there with the AC set at the coldest setting, recirculation and on level 3.

One thing that is definitely lacking is airflow. Blowing fairly hard out of the vent but by the time it reaches me it's faint.

 

[RDeFayette]

OK, so I've been able to get some information regarding performance.

Left home Tuesday morning and the outside temperature was around 80 degrees, plus my truck was in the shade so it was even cooler. Drove to Carquest and bought a thermometer. Granted it was already fairly cool inside the cab, within 5 minutes it showed 44 degrees or so in the vent. Drove to Houston and it stayed pretty consistent.

The temperature here in Houston has been in the mid 90s the past two days. Leaving my truck in the heat with the windows cracked and a sunshade in the windshield, the thermometer showed 100-110 degrees. It took 30 minutes to get down to 45-50 degrees (hard to really read where it was, but it was closer to 50). And never really budged from there with the AC set at the coldest setting, recirculation and on level 3.

One thing that is definitely lacking is airflow. Blowing fairly hard out of the vent but by the time it reaches me it's faint.

This is just an FYI for anyone interested. 3 weeks ago my blower fan died. Up until it died it had all the speeds "sounded" like it was spinning as normal for all these years. even on high. anyway replaced the fan and UNBELIEVABLE air flow now. apparently for the last couple of years "high" was a relative term/speed. Might have been faster than all the other speeds (you could hear the difference). BUT the fan must have been getting old and slower. Now you can feel the upper vents in the back seat, before, no way. No there wasn't any broken doors and such when I took the blower out. Just an FYI I stumbled onto.

 

[K5IP]

MMeier,
My truck also had vent temps of about 37 deg. That was OK for a dry New Mexico and Arizona, but when I took it to Minnesota, the evaporator was always freezing (even with a correct charge). Have you noticed this?
Rog

 

[RDeFayette]

MMeier,
My truck also had vent temps of about 37 deg. That was OK for a dry New Mexico and Arizona, but when I took it to Minnesota, the evaporator was always freezing (even with a correct charge). Have you noticed this?
Rog

yes there is/was a TSB to fix this.
The temp. probe it the evap. needs to be relocated.
to do it correctly the plenum needs to be removed.
Had this done in my '03..problem solved.