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The hottest part of the year and my AC compressor decided to lock up. I replaced the compressor, lines, orifice tube and accumulator and flushed the ever living daylights out of the evaporator and condenser . Well the truck is a 2006 and it looked like everything was original. But my question is I can't find any info on how much refrigerant oil is needed for a 2006 Chevy 2500 with the duramax. The part store said 7.7 ounces but that sounds way to much to me. Any help would be great
I just don't want to wind up missing a digit or limb. I can sometimes get in a hurry to get results.
Micro tube? Who comes up with this stuff? Thanks Ken I called the service manager and he said that it was 7.1 ounces so that is what I went with. The thing is cooling great now except this thing doesn't cool well at a stop. I don't know if it is all of these trucks or just mine?
When did you last clean the cooling stack?You’re likely clogged with grass feathers dirt etc if you haven’t in the last couple years. I’m due again been a few years now 5-6 and I’m having same thing. A little throttle to get fan moving air cools immediately. Mine is clogged again. A bit of a pain to clean but possibly your issue now.
Quote from: oklawall on August 11, 2019, 10:36:35 PMMicro tube? Who comes up with this stuff? Thanks Ken I called the service manager and he said that it was 7.1 ounces so that is what I went with. The thing is cooling great now except this thing doesn't cool well at a stop. I don't know if it is all of these trucks or just mine?that is EXACTLY what mine was doing right before the resistor/heat sink finned aluminum bs whatever you call it, (help Ken) fried itself. strong ozone smell for a few days then it stopped blowing cold altogether. easy to get to when you pop the glove box out, took about 20 min to replace. not too expensive either. just can't remember the darned name.
First question I would ask is what temp do you consider "not cold enough" at idle? Out here right now, we're lucky to get them in the high 50's at an idle, with the blower set on high.The blower module would just prevent it from blowing air out the vents. If it's blowing, but just blows less cold (and there's actually an issue), then it's either building too much pressure (radiator fins plugged, bad fan clutch, etc.), too much oil in the system (did you make sure the compressor didn't come pre-charged with oil?), or the condenser is restricted internally. I assume the compressor stays engaged, at idle, when it quits cooling? How much r134 did you charge it with? Did you pull a decent vacuum (at least 25in)? There are other things, but I listed the most common.
We did Don but the cool thing (amongst many) is that texas has its own grid. We don’t rely on anyone Sent from my iPhone using Tapatalk
Do you have a set of gauges? Pressures would help diagnose.
I'm just worried that if it is an issue with the condenser, your new compressor won't be new for long.Pressures would tell you if it's plugged.
Quote from: KensAuto on August 12, 2019, 10:16:19 PMFirst question I would ask is what temp do you consider "not cold enough" at idle? Out here right now, we're lucky to get them in the high 50's at an idle, with the blower set on high.The blower module would just prevent it from blowing air out the vents. If it's blowing, but just blows less cold (and there's actually an issue), then it's either building too much pressure (radiator fins plugged, bad fan clutch, etc.), too much oil in the system (did you make sure the compressor didn't come pre-charged with oil?), or the condenser is restricted internally. I assume the compressor stays engaged, at idle, when it quits cooling? How much r134 did you charge it with? Did you pull a decent vacuum (at least 25in)? There are other things, but I listed the most common.Why is it I have the feeling Ken is about to say I told you so?AT 100 deg outside temp and a 5 minute cool down at idle with the compressor clutch engaged the temp set at 68 on both sides with the fan on high the air out of the vents is reading 89 deg.The compressor came dry per O'Reilly's and I turned it upside down and let it sit for 30 minutes and no oil came out(it is a Murray) I put 7.1 ounces of oil (amount I got from the Chevy dealership/ O'Reilly's told me 7.7) spinning the compressor 30 times in each direction to prevent hydro lock. I pulled a vacuum of 29 inches for 4 hours and it held it for 2 hours. I put in 2.7 pounds per a cheap set of digital scales.I'll try cleaning out the cooling stack and check the fan clutch. I have a bad feeling that those micro tubes may have gotten me
Conditions:Engine warmed up, idling, preferably in the shade to keep windshield/dash temps down.A/C on, blower speed high, recirculation (max).Vent temp as close to as bad as you've seen (if you check pressures while the vent temp is close to normal, the pressures will probably be close to normal).Report back.
Ryan's post forced me to reread your original posts. Yeah, too much freon.Pretty sure he's right and I flat out missed it. Chevy trucks have specs for single and dual a/c, like a Yukon, even though pickups only have front AC. 1.6 lbs. sounds right.
Vac and refill to get exact amount. You can try to bleed and go by the gauges, but you can't get it perfect.Ideally, with the conditions in your last post, you should've had about 40-45 on the low side and 220-250 on the high side.
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Topic: Durmax AC problem (Read 3780 times)
