dbrannon79
I'm getting there!
Ok guys I’m in need or a little help with the AC on my truck. I’m preparing for a vacation trip in August with the family and the wife is telling me she’ll rent a car if I can’t get my ac to cool better!! I’d like to see it cool good going into the 104 degree summer months.
it’s always been barely able to keep 60 degree air at the vents and in a crew cab truck it’s kinda hard to stay comfortable in the southTexas heat especially when the humidity is through the roof!
this weekend I pulled the front grill and installed a couple of 12” condenser fans despite having very limited space with the trans and engine oil coolers in there I was able to make it work! There wired in with a relay to the clutch cycle switch so there only on with the compressor. Photo attached with them behind the grill.
Today I ran the truck at idle for about an hour watching vent temps, pressures, and condenser temps. My recirculating door motor is broken so I wedged something in there to keep the door shut to circulate air in the cab and not draw in outside air. Now I have a evaporator freeze issue! It’s almost 90 degrees outside and humid today too.
Before I did all this. My low pressures were always about 35 with the high side at close to 200. Vent temps stayed at about 60 unless it was really hot outside then it was up to 65-70 degrees. After I got the fans installed in front of the condenser pressures stayed about the same but vent temps were at 55 or so. Now that I’ve wedged the recirculating door shut I’m seeing 32 degree vent temps. Pressures have dropped to 25 low and 175 high. Condenser temps and now equal across at 125 degrees and the evap water drain has stopped drain due to the evap beginning to freeze up! Oh and all this with the blower fan on high.
One tap of the throttle and the compressor cycles so I added a little less that half a can of 134 and no change in pressures or temps!
about a year ago I had replaced everything on the ac, new compressor, dryer, oe fixed orifice, and flushed everything out since the old compressor had seized up. Do I need more Freon or is something else wrong I may need to check?
it’s always been barely able to keep 60 degree air at the vents and in a crew cab truck it’s kinda hard to stay comfortable in the southTexas heat especially when the humidity is through the roof!
this weekend I pulled the front grill and installed a couple of 12” condenser fans despite having very limited space with the trans and engine oil coolers in there I was able to make it work! There wired in with a relay to the clutch cycle switch so there only on with the compressor. Photo attached with them behind the grill.
Today I ran the truck at idle for about an hour watching vent temps, pressures, and condenser temps. My recirculating door motor is broken so I wedged something in there to keep the door shut to circulate air in the cab and not draw in outside air. Now I have a evaporator freeze issue! It’s almost 90 degrees outside and humid today too.
Before I did all this. My low pressures were always about 35 with the high side at close to 200. Vent temps stayed at about 60 unless it was really hot outside then it was up to 65-70 degrees. After I got the fans installed in front of the condenser pressures stayed about the same but vent temps were at 55 or so. Now that I’ve wedged the recirculating door shut I’m seeing 32 degree vent temps. Pressures have dropped to 25 low and 175 high. Condenser temps and now equal across at 125 degrees and the evap water drain has stopped drain due to the evap beginning to freeze up! Oh and all this with the blower fan on high.
One tap of the throttle and the compressor cycles so I added a little less that half a can of 134 and no change in pressures or temps!
about a year ago I had replaced everything on the ac, new compressor, dryer, oe fixed orifice, and flushed everything out since the old compressor had seized up. Do I need more Freon or is something else wrong I may need to check?