That's it I can't take it anymore I Give up I capitulate. It's too hot. I've waited far too long I'm initiating the parts cannon on the 2007 Chevrolet Silverado it's a 3500 Dually the Duramax and for the mileage count, update we have on this truck approximately 459 miles. No.

I'm just kidding. that's the range. 229 850 miles on the odometer. So after a quarter million miles I Still cannot get a decent cold temperature out of my Center vents on the AC I Realize it's 96 97 degrees outside, but it red lights the temp is ticking up to like 75 degrees.

It's too hot. The compressor I'm certain has crapped out. We've already put a condenser in it because that condenser had a clog. uh.

I've had the evaporator opened up and I've done evaporator flushes on it. That thing seems to flow. We've replaced the orifice assembly and have found, uh, minimal debris in there. but last time I serviced this I could not really get the temps and the pressures that I wanted.

So because of that I I'm gonna go ahead and change out the compressing unit. This thing's been here a quarter million miles. We know what it's not. Uh, last time around I attempted to change this hose right here.

It went down to the condenser but uh, that was actually the wrong one that I ordered it bolted on but it was the incorrect hose. It was leaking at the fittings. So because of that I've also got the correct replacement hose. and as I mentioned in the last video, I was going to change out the suction hose and I was going to change the receiver dryer which is back down over here attached to that low side fitting.

Now as you can see, I've already got the machine powered on and let's go ahead and recover all the refrigerant out of this unit because we are opening up the uh the system here and what I need to do is get some light on the subject over here. we're gonna get the belt loose, pull these lines off after the machine is done I need to lose I think this uh top plastic right here to get to the other side of that line and we probably have to the intake off. So I got a bunch of stuff to do and not a lot of time to do it because it is end of day on Friday and I've done all that I can do so far. but I need to get something for me done because it's it's just too hot all right.

So like I mentioned, first thing I need to do here is get this big plastic shroud cover thing off so I can get to one of the fittings on the hoses and then we can work our way back towards the compressor. As soon as the machine is done recovering, we can crack the lines open I'll uh, I'll get that intake off so I can get down to the belt tensioner and then we'll get the belt off and pull the compressing unit one more way back over. today covers off. There's that fitting that we're looking for.

All right. let's back it on up and move around. Let's go ahead and get this: Banks air intake removed. we're mass airflow connector here.

we go. set that aside right there and I'll pull these clamps right here and right here. We'll get one of those off and then the four screws on the lid that will expose our air filters which, uh, you're timing I suppose because I haven't checked this filter in a couple of months. All right, All right, well don't mind the AC hoses.

they'll be out of the way in a moment. We've got four these stainless steel screws here on this lid and once these are gone, I can pull the intake off. It'll give us some more space to get to the hoses on this side and the tensioner for the belt which is I'm actually going to cheat on that tensioner. uh, I have to pull the fan shroud up to get the tensioner tool on there.

so instead I'm just going to use the pry bar against the pulley. I'm cheating, but it's mine and I can do that so we can barely see. But right here is that's our belt tensioner and the pulley is below that and then the little square cut out is behind this piece of the span shroud now. I Can't really get a tool onto it because we have to go through that little uh little piece of bracketry.

I'm thinking maybe if I pull this section of shroud off I can put an extension on it. Let me try that first before. I Uh I go full bore in there with pry bars and stuff. Looks like I need to remove the transmission control module from the Shroud that's this guy right over there.

They're getting B to be very rare and expensive. those TCMS I don't want to hurt it. so this thing is held onto the Shroud it looks like just a with like a little plastic retainer clip down there. Let me pull this guy back and we'll try to unconnect this module.

There's one of our push pin connectors and one is missing. There should be one more or no, maybe not. It hinges There we go it. hooks and hinges.

so we'll set our module down right over here. You stay safe and we've got one more little connector, a little push pin thing down here at the shroud. Got that one out and the top piece of the Shroud should just come right on out of there fan shroud. Okay, so this didn't give me a boatload of space in here, but I did get enough to where I think I can run an extension and a ratchet through and get it onto that tensioner right there to relieve the tensioner's pressure on the belt.

And once the belt's loose. Uh, we're a smooth sailing here. Uh oh, we're going deeper than I thought. Look at what I found.

See the tensioner and then the pulley right there. Look down. there's a piece of that pulley that is broken. See that.

So now we're going to put a tensioner in it too. Okay, let me go get that ordered and we'll continue disassembling. this job. Just snowballed.

Look at that. Yeah. Quick. easy job.

spiraling out of control here. Wobble extension for the wind. Hopefully I don't have to take this entire interior shroud out. Maybe I can just bend it back some far enough to get that tensioner bolt out of there.

and I think I think that'll work All right? So what I'm gonna do here is we're going to reach down in and I'm going to pass this extension. It's a half inch Drive Extension through the fan and we're going to plug it into the square cut out receptacle Notch thing. see right there by my thumb. Right there it is.

We're going to plug that into the tensioner and then I'm going to go in with the half inch ratchet and untension said tensioner. Then we can get the belt off. Slip this guy on pretty tight. Squeeze down there.

you're gonna need two hands in I Need to press in on this thing to get it to snap into place. sorry if I'm in the way I Cannot reach get up. No fine. I think I can probably reach it.

Not a chance I can't I can't get in there. come on. Perhaps a long magnet on a stick? We'll fetch this half inch drive ratchet hope so we can kind of ease it up some. I don't have enough magnetism I'm gonna have to use compound magnets multiple magnets if I could stand it up.

I can I can get to it? Oh man, come here. Got it there? It's ruining the radiator. Not that part I was already like that. All right, going back in.

round two, trying again for the squeeze this ratchet onto that extension. Come on stupid thing. the extensions wobbly and it's wobbling out of alignment here. I can't put the extension on the ratchet first.

Oh man, you got you got. Hang on now. Sorry. Okay, it's on, but it's pointed too far down so we're coming back up, clicking the ratchet back into reverse so this is some backup torque on it.

There goes our tensioner. It's releasing I need to readjust again. get another click out of the ratchet I Know the camera's all over folks. I'm trying here.

There you go. one tension or tensioner and then I'll go ahead and pull the belt off. There we go. Just like that.

let this thing kind of slide back, catching it so it doesn't snap and fling off in the other direction. Now I can take it back out. there. we go.

That was quite the accomplishment in my opinion. Okay, so now I can get to since the belt is off I can pull that 15 millimeter bolts off front of this tensioner and remove that unit. so let's do that next now. I certainly did not intend new.

Uh, go this deep under this job I kind of wanted to be done by now, but that's how it's got to be. You know I actually had intended or I will have to and intended to go in here this deep in a couple of weeks because I'm going to go ahead and move on that dual alternator setup that I was stewing over for the I don't know the past year or so. It turns out these LBZ Duramaxes had a provision on them where from the factory when they were equipped in a medium duty or like an ambulance package. you could get the vehicle with the two alternators and because of that, the only thing that it's missing is one of the side brackets.

So uh, I'm gonna go ahead and buy a second alternator. it's going to be the same part number, same size. I'm going to get one more alternator and I think the auxiliary alternator is going to be like a maybe like a 250 or 270 amp I think that's 120 and I will run overdrive pulleys on both of them that way, even at idle speed, I'll have enough amperage to pretty much run whatever I want? Um, the issue is I've got to replace the belt with a longer belt and I have to add an idler pulley to the front of the engine and again, all that stuff is equipped. or it's it's all there.

The holes are there for the mounts and brackets. I've just got to buy the bolts and The Idler and the belt. so this is going to come off of here at some point in the future when I'm ready to do that second alternator job. What for now? since I saw that this thing is broken I'm gonna have to replace this so looks like I'm just gonna have to do my job twice.

I'm trying to get that stud bolt nut thing out of there without taking the Shroud off. That's what's taking so long. it's working out, but it's not very easy. but I know you can't see.

So yeah, I'm kind of working that bolt and it's going under this piece of the shroud. There we go. Now it's off. Come on out.

Tensioner. Oh man, look at that I think it's bust. clean off. surprised it wasn't Uh, chewing up my belt thing.

could have thrown the belt. it's not okay and look at that. All right? Well, I got a new one on the way. so now we can move on to the compressor and these hoses.

All right. Moving on around to the AC compressor. let's finish getting that cycling switch or high side switch. disconnected one hose, another hose so it looks like we're needing two 13 mil.

Again, the system's already discharged. Get that one disconnected. next. Set these aside.

All right. Since our discharge hose is disconnected again, let's pull the same hose off of the evaporator side another 13 nut. Let's not drop it. Don't spin it.

Ray Oh, I'm dropping it. There it is. So that's the other side of our hose. Let's dig this thing.

Back out of here and compare it with its replacement. I Wanted to change this hose like I said last time. I had this apart but uh, it was leaking because I had the wrong one, wrong replacement and I had found that the difference was actually the way that the ends were machined. One of them had these gaskets for a seal and then the other other design had an O-rate for the seal.

The design that I had was the O-ring type, not the gasketed type. Looks like it is the correct component. I Have to change that switch back out and put that thing on this. but I can do that later.

So let's get this guy in position and connect it. We'll pull off our little protective cap. There's our nut. Get that thing started.

The bottom of that little manifold is inside of the line so everything's lined up. Let's get this thing torqued on easy time. Wobbly click. Okay, here's our pressure switch from the old line.

We'll transfer this guy right on over. We had a new O-ring on it and now that's tight. This is ready to go back on our compressor when it's time. So we have the belt loose.

We have this hose removed, Compressor is disconnected. We need four bolts. One two, three four. We'll pull this unit right on out of here.

Set that aside right there. All right. 15 on a wobble extension coming in. Let's break these mounting bolts loose here.

There's one a little dose, third one, and the last one right there. All right. They're all loose. Probably could have broken those loose, but uh, my impact.

but I figured since it was going to go on to an extension, it probably might not. Whoa. might not have the Charlie guys. You're falling all over the torque that one.

Very good. Okay, she's unbolted and loose. Okay, all the compressing unit is free. Nothing else is holding it in.

Let's pull this thing out of here All right. Set it up over here next to our new one. Give it a comparison. So how many ribs do we have? One, two, three, four, five, one, two, three four five.

That's the same. This is the same amounts of the same connectors, the same back side, the same, and our new units coming in. I'm gonna go right back into the same place. Let's slip the belt on so it doesn't fall off something.

and I have to reroute it all over again so we'll put that back and get our bolts dropped in and tighten down. Excellent! My tensioners just arrived so we can move back to the tensioner install next. Yeah, this is definitely the hard part. Do this ASAP and plug our hose in.

It's good for there for right now. Put this guy back in that Port so it cannot become contaminated. Bolt on and we've got one plug right here on our switch. plug that guy back in and the plug for the compressor itself.

that's the one that goes to the clutch plus the 13 mil bolt for the hose pickage. Okay, that section's done. Let's unbox our tensioner and get that guy reinstalled so we can finish up the belt. So we're gonna need to move through this rather quickly because I want to get to this hose plus that receiver dryer down over there.

So let's get our tensioning device back down into its home here. and I think I'm gonna need to Loop the belt around it. didn't consider that when I took this apart I think that's how it's going to go. Sure, why not? Uh, pull that forward again.

the bolt won't go down like I Couldn't get past that plastic business. We're almost there the bolts and are lined up on the hole. Come on hole. There we go.

Oh stay stay stay stay. I'm punching something hot. That's where that goes. So now it's indexed.

There are two pins or pegs on the back of the tensioner and those index into two holes inside of the front of the mount there. And that was our quick action that we had. So now I just need to kind of tighten this down, put some torque on it. We'll align the belt, get it over top of the alternator, and get the tension all set up.

and then we're good with this section over here. Come on, it's just easier this way. Still going. we're almost there.

I'm A Okay, it's almost bottomed out a little bit more now. I touched something hot. It was my light burnt my banji. Here we go and I'm gonna cheat this wrench with another wrench myself.

extra Leverage Yeah, it's called cheating a wrench a little bit more. click where? All right. tensioner, relieving tool. coming back in, we just gotta plug that into the little square, cut out, snap that guy in and then un tension it.

Oh, here's the old one. that's the square I was referencing. So we on tension first. I need to get that belt lined up with that idler right there that wasn't okay and and you need as much as possible here and up over.

Oh no, you guys Well here. I got you I got you more. There's our it's like three quarters of the way on there we go. I Mean it's not coming off now I got it there.

It is okay. let's relieve our tensioner and I need to walk around and do a check on all the ribs to make sure everyone is aligned. So I skipped ahead some and tossed the Shroud back in. So let's get the bolt on and we can hinge the TCM back onto its little bracket right here.

which is gonna go. They have that. Oh it's stuck. Come here.

it's gonna hinge. think like that. How'd they do this? It's got to go there right? That's where. have I done there? Got it.

Had to push and my little pin. it's gonna go in right down there into the shroud. it's going to line up. Oh I See I gotta pick up on it.

Okay, no matcher. We'll figure it out. You'll add it from down hill. Come on pin, go in there.

That's it. Okay, that's pinned in. We're good. TCM is installed.

Let's get the hoses. next. Correction: Actually, we're doing hoses and the receiver dryer. Let's disconnect that receiver.

Move that aside so we've got a 13 A 13. There's a 13 and then there's a 10 on the band that holds that receiver trying to position. We got to get that thing out too. and if I can I'll just sneak my wobbly 13 in.

Go get that line disconnected I Was gonna try to sneak this out with the line still on it, but that was probably going to be an exercise in futility and we've got this 13 that was coming off. That's for our line that contains the orifice tube. We don't need to pull this one all the way out or pull it apart. rather I've already put a new orifice in it.

this one. This is where we get into tight squeeze territory trying to fit power tools into places not designed for power tools. Then the little metal band down there on the receiver that has a 10 millimeter nut or a bolt or something right back there. I Can barely see it.

All right good. I Guess we're gonna find out. Yepper pull this thing up some just kind of flex it and then Our Receiver dryer just kind of squeeze right on out there we go. Got her.

All right? we're getting our receiver dryer slash accumulator in position here. Let's get rid of the cap. Now here's our our old one and it came with this. uh, this installation here which is it's form, fit and it's molded and it's coming apart.

Usually you got to reuse this stuff but I happen to have like some header wrap sitting around so I uh I cut up my giant piece of header wrap and I wrapped it around and zip tied it so we're gonna put this in place instead to insulate and prevent heat soaking into the receiver dryer. It's already got a new gasket on it so all I really need to be doing is getting it into position here. Plug that into the evaporator. Get plugged in.

please. come on now. Hmm. Why won't you? The angles of our dangles aren't correct here.

There we go. Got it. Okay, that guy's in. Put the bolts on, reach down and tighten up the little band clamp bolt that's down there.

It goes. nickage. All right, that's tight. Let's plug in our low side cycling switch, that cap off and I'm going to bring the hose in.

They said this is the right hose for it, but this particular hose has an extra fitting right here. Looks like it's for some kind of a sensor. Maybe like a pressure sensor. There's another fitting over there I Think that's a service port.

Yeah, that's a low side service port. so this is not exactly the correct hose, but it sort of fits. and I don't have another one. So I'm gonna try to make this one work as best I can I have to bend it a little bit right here.

the angle's not exactly right. If it doesn't work, then I'll just change it back with my other one. No big deal, All right. So I did some flexing around action and I think I got a decent fit on this.

It plugs in without putting a side load on anything. It clears the firewall, it runs over and it meets the compressor. So I'm good with that position on this hose. Let's get these two guys tightened down real quick and then we'll Bolt the hose back on.

We are nearly there. You know what? I was thinking? it'd be cool since I have that extra Port actually two extra ports in that line. Maybe I can hook up a pressure transducer and connect. Um, that was loud I can connect one of these uh, that transducer to the uh, the banks module the eye Dash and it can give me real time live AC pressures like I I could could do it I don't know if I will, but it'd be kind of cool if I did.

Anyway, let's get these Uh hoses connected. the AC Service hoses for the machine will evacuate this system and then recharge it and see if this thing's gonna actually make cold weather. or if I just need to sell the truck and we're gonna see if this thing's actually gonna make cold air. or maybe I just need to sell the truck I'm just kidding.

I'm not going to sell it. shouldn't have said that Anyway, all of a sudden everybody like I want to buy it. Sell me your truck. It's a negative, not for sale, cannot park ways with it.

It's pre-emissions There's no way I'd let this thing go. so that one that does present a bit of a challenge right there to get like fitting onto it's not actually going to fit. so I'll just use this one up here. Yeah, good to go look at that now.

I Don't have to worry about it, let that cap back on that other low side fitting. Stay there Okay. Beginning vacuum phase now for about 10 minutes that's industry standard. Then we can get the charge in I believe it is a 1.6 pounds of refrigerant over this intake.

Back in, let's move our connector over there for the mass airflow that filter down in its home and get our clamp set up as well right there. Rodger I'm gonna clamp it right there right there, put you in, you stay there. and then four screws on top of our filter lid stainless so they don't rust. doing machine.

Eight minutes, 45 seconds to go. the clock is ticking. The countdown has begun. The Final Countdown I Really hope that this compressor simply just didn't have flow capability to get enough refrigerant through the system to actually pull the heat out of the cabin because if I've got if I got an evaporator problem in there, I'm going to be PO'd because I'm just I'm just listed in removing the dash.

it's not gonna do it. Nope. I refuse. Now if we're good, it's the compressor I know it is I forgot one and that's where all my tools keep going down in there.

Forgot that one too. Yeah, how did I managed to manage to do that? You okay, Beware of shovel there we go. Lost my towel down there I Had a customer complaint once because I dropped the towel down in the engine compartment and it was sitting on top the fender of like a work van and they called and sent uh sent pictures of the alleged towel and they were generally upset and angry because I left the towel in uh in their van I bet if I left a 200 flashlight in there they wouldn't have imagined. but you know the towel that that proves I did a bad job.

So what are you gonna do here? Let's make our clamps tight next or just the one rather. I only took one off. good to go and our mass airflow connect door right there. Click that on.

We're good to go waiting for the machine. Okay, vacuum. If we let's go ahead and get the charge in, it's going to be 1.6 pounds of refrigerant. Okay, there are seven ounces of oil in that compressor.

All right. Vacuum complete. Let's go ahead and charge this thing. It's going to be 1.6 pounds, refrigerant, begin charging and then zero one six.

Oh no. I'm out of refrigerant, Send it ability. 1.499 pounds. What? Okay, 1.477 pounds.

Send it beginning charge now. so this is actually going to be about a tenth of a pound low. so if, uh, if it cools fantastic, then it'll probably cool even better with a full charge. All right.

So it's going in listening for leaks with my not exactly correct hose. So far so good. Yepper all right. let's wait for this thing to finish.

We are almost there. We'll go ahead and fire it up and see what she does. My battery box, My battery box. we're inside of my toolbox.

It's gonna be two either group 29 or group 31 deep cycle batteries in here to run my inverters, but that's for later. However, I do have the heavy gauge wire already run into the toolbox. it's not connected I've got it run and it terminates just right over here just hanging out. I'm gonna put a big like 300 amp solenoid in this so I can turn it on and off with a switch connecting One Bank of batteries to the other Bank of batteries if you're curious to why I'm doing that.

I Actually made a video about it the other day when I installed the high idle feature in this truck. I will leave a link to that video. it'll be the second link in the list down inside the video. This video's description All right.

So the thing stopped at 1.4 pounds of refrigerant, which is pretty much what we took out. So uh, it should show us an improvement at 1.4 pounds restarting the engine. Let's fire up the system, get it on high, we're on recirculation front Vents and I'll go grab some thermal meters. Speaking of thermal meters, right outside, right now we have 92 degrees at the front of the truck.

so we're we're working with 92 ambient air 10. I've got my thermal meter. Let's get that thing in our Dash We'll let that stabilize and in the meantime we'll run outside and uh, check the pressures at the machine. All right.

It's been running high idle machines on it. Charge is full mostly. Low side is almost right on the money I Want to see like 32 but our high side is still in the 300s. The only difference we have here is our low side is a little bit lower and our high side needle is not bouncing and jumping around.

See that needle bouncing around a little bit. That's indicative of an issue with the compressor. See that we shouldn't be bouncing like that. Our our low side pressure came down to about 40.

PSI Let's go into the cabin and we're gonna check. Uh, check the thermal meter. I'm not so supremely confident because our pressures are wrong. We do not have the appropriate amount of pressure here and according to our thermal meter here, we are at no, it's not doing it either.

60 59 degrees Yeah I Want to see in the mid 40s 45 46, 42 59 58's not going to cut it I think I have a restriction inside of the evaporator. It's a seven and a half hour job to go in there and take the EVAP box out. I've done a couple flushes on the thing already I'm I may just have to bite the bullet and pull the thing apart. However, if I procrastinate long enough, we'll make it to winter time before.

uh, before it becomes a real problem. So I could just tolerate it and pretend it'll go away, but it probably won't I need to get it fixed? Uh, had something to prepare for for certain I don't like to pull dashes out of vehicles especially you know, older plastic dashes? I'm not not too thrilled. There's a high risk of breakages and I don't want to spend seven hours working on the interior of the vehicle because here's the thing: my headliner is falling down. my carpet is a quarter million miles old and if I'm going to go through all the trouble of pulling the seats out, pulling the dash out I might as well order carpet and so then I'll have to reupholster the inside so it'll end up being more of the restoration project.

but I just I need to mentally prepare for that and hey, look at that. Hold on a minute here. we're coming down. look 260 and 30.

All right? Okay, maybe there is hope I'm gonna go out and drive it. See you guys later. Stay tuned for the Uh The Encore evaluation going down the road. when we close up shop.

we're gonna get out of here. All right, everything's disconnected. Close up our Hood the shops closed doors are shut. we're all locked, cars are put away.

Something's good to go. Let's get out of here. let's see our temperature. Where are we at? 58 60 Somewhere around there? All right, let's go all hit the road real quick.

Uh let's see high idle off? Yeah that's super cool I Love it man. I completely feel like I'm forgetting something. but I don't know what it is I don't know. No matter, figure it out in a minute.

Whoa. my hair. Turn that down some All right everybody. So far so good.

it's holding, it's holding in the high 50s right now. we're gonna go out, pick up some speed, make sure there's some fan going over the condenser and I'll check back in on the temperature in a moment. Green light whoa oh my. God I have my pedal monster turned up too much again there.

The throttle was kind of touchy and aggressive for for my mood. so I didn't feel like uh, probably turn it down so we're rolling along. What do we got here in our tents? We're we're low 50s so we've got an improvement. we saw pressure was a little bit high on that high side.

It did come down but I I Don't know if if that's really going to be enough to keep this thing cool hovering right now at 51 if we know both sides are up I'm cold Max cold 60 degrees there we go. All right, So we are. it's better. it is better.

but it's not. It's not performing the way it was designed. it's just not cold enough yet. So uh, I'll probably tolerate it for another year and then I'll pull the dash out when I'm ready to do the carpet and the headliner.

So until that time again, thank you guys for watching this video. Let me know what you think about the situation that pan here. Uh, in the comment section below, would you leave it alone and just let it ride? Or would you be willing to have the dash removed? Or pull the dash and replace the final part the evaporator core inside of the A-trac module. Again, let me know in the comment section down below and thank you guys for watching Catch you on the next one Finalized ending of video.

Have a great day. See you guys later! All right. look at there. Ambient Air Temperature 87 degrees So it's cooled off some and now look here.

40 39 degrees. So after, uh, about a 45 minute test drive and it cooling off just a wee little bit I've got really, really, really, really, really good Center Vent Temps All right, we're getting somewhere. I Guess.