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- เผยแพร่เมื่อ 20 ต.ค. 2024
- This video shows how to replace the A/C Expansion Valve on an E320. The procedure is explained in detail in the video along with torque values, etc... Just be sure to have the old Freon evacuated from your system first, to replace your Receiver Drier (a must whenever you open the A/C system - see link below for as video on that), and to replace the rubber gaskets.
Receiver Drier Replacement - • Mercedes W210 E320 A/C...
Compressor Replacement - • W210 A/C Compressor Re...
Also, here is a video on how to charge your A/C system with fresh R-134a Freon:
• Mercedes A/C FreonChar... .
Here are links to some of the parts in the video:
Expansion Valve - www.fcpeuro.co...
O-Rings Package: www.autohausaz...
www.autohausaz...
Crowfoot Wrench Set - www.harborfrei...
I will do this job tomorrow. Your video was a very good preparation of what is waiting for me 👍. Thanks again!
Good luck to you. My advice is to use new gaskets and replace the receiver drier. Let me know if you run into issues.
Thank you. I will replace every single part except the evaporator. A nearly total system overhaul so to say. I think it will take me two days because of correctly crimping the new hoses in the existing ac line fittings. But it's my hobby and I like working on my E430 😊. I will let you know...
Your videos about the compressor and the receiver drier were also very helpfull for me in preparation of this job.... Thank you again 😊
@@Akadectra you are very welcome.
Great Video on the repair, Thanks for the extra suggestions, much easier than fighting other parts in the way. Thanks.
Thank you, Matthew.
Very good Video again. Greetings from Bavaria/Germany 😊
Vielen Dank.
@@masood-tv Gerne. Sprichst Du Deutsch?
@@Akadectra ein bitzchen.
@@masood-tv Excellent! I own an E430 Elegance from 1998 with 184000km. It is like new, it drives like new and I do it like you: maintaining everything like new. I really like and appreciate your videos. You explain everything very well understandable and give top advice with your experience by having done everything by yourself in a correct manner. I keep watching your videos. Alles Gute für Dich 👍
@Akadectra I share your love for these cars. If maintained properly, they are a joy to drive. Thanks again.
very educative. Thank you regards
Thanks.
Hi its very helpful video, i want to ask something.
1. Change the expansion first or dryer first?
2. Whats the indication that we need to change expansion?
Thank youu
Thank you, Albenna. Dryer always last. If the system is restricted, no longer cools as before, lines frost, warm air sometimes, or you want to overhaul the system. I think I explain these and other symptoms in those videos.
Great video, can I apply that to replace this valve on E320 1999, since the passenger side blow cold air but not cold engine and the driver side No cold at all , it was working before couple of months both side but still I was feeling the cold air in the passenger side better than the other side , because in that time , they clean the pipes and adding Freon .
Thank you. Yes, the procedure is just as applicable to your car.
Greta video. I am trying to repair a 2000 E320 with a/c and engine coolant temp problems. The single electric fan that cools the radiator and condenser spins at a very low speed under all conditions. It was not always this way. When the car was much newer, the fan would spin at high speed when needed and keep things cool. Now if it is a very hot day the a/c will not cool as well and if you are idling or crawling in traffic the pressure in the a/c system gets too high so the car shuts down the compressor. The engine coolant temp also gets too hot under idle or crawl in traffic conditions. I have done the high speed cooling fan motor test when you hold both auto buttons on the HVAC controls and force the electric fan to spin at high speed. I swapped the fan control computer that sits under the left headlight but the problem remains. What in your experience is going on?
Howdy texan176, I have not run into a similar issue but my advice is to see how you can logically isolate the problem. Start by powering up the fan directly from the battery. If high speed, then look at next touch point...may be sensors?
@@masood-tvI got recharge no leaks some day work ice cold then if u shut off car when u turn it on only blows hot air u gotta turn on and off till u trick it could this sensor cause that ?
Hi, when you did the test, did the fan turn at high speed? I would unplug the fan plug and feed it 12 volts via a power probe or cables connected to battery positive and negative to see if the fan speed. If good, then track it backward to the controls.
Thank you for sharing great DIY video, i have a question - when i have my ac system evacuted (at local shop) before replacing the expansion valve and drier, will i loose all my PAG46 in the system? If yes, then when i go to have the car recharge of 134A (loacal shop) will i instruct them to include a PAG46? Or can i add PAG46 myself, if yes- how? Thanks
Hi Marlon, dont put in any oil. Have the shop add freon and the oil. If you wish to add the oil, add the freon also. I have a video for that as well...
@@masood-tv Masood thanks for you response, i see your video on how to add oil by taking out the compressor. This means that the shop will have to remove the compressor to add oil? or they can put the oil on their machine that charges the ac. Otherwise i will have to pay them extra labor if they have to remove the compressor to add oil. Thanks again.
No, they dont have to remove the compressor. As they evacuate the system and as you replace the two components, some oil will get lost and will need to be replenished. The shop should know how much oil to add to the system along with the exact volume of freon.
Thanks. Good video.
Thank you.
Great videos on your repair work! Would your recommendations apply to a W211 model as well? Mine is a 2007 e350 Thanks!
Thanks, K Ross, and yes, in general. But if you have a specific one in mind and care to elaborate, I would gladly respond.
Accessing to the expansion valve is quite complicated...need to take out many trim parts..
Hi James, yes, that is why shops will charge over $1,500 just to replace the expansion valve, the drier, and to recharge the system. Hopefully, this step by step video will simplify the process quite a bit. If you have to replace the compressor also, the charge goes above 2,000 USD. MB would charge even more...
@@masood-tv thanks! By the way, is there any AC expansion valve filter?(not dryer) I tried to find it but could not.
@@jameswan670 I don't think so...
I've got a 96 W210 E230, the one with the analogue dial climate controls. The air conditioning is intermittent, sometimes cool air comes through, at other times it's just the blower giving out air. Rotating the climate control blower dial back and forth from 0 to 1 fixes the issue sometimes. Compressor is in good condition, regassed and checked for leaks, replaced climate control module but no luck. Could it be the expansion valve?
Hi Naveen - that could have a number of culprits. Check the AC lines immediately after it starts to just blow air and see if they are frozen. Regardless, you may have overcharged the system or you may have a bad evap.
Got a question for ya. Would a bad dryer cause high pressures on the low pressure hose? So, I did the expansion valve today and didn’t do the dryer. The reason I didn’t do the dryer is because I thought it may be still good since the car only has 45K miles on it. Anyway, I did the job, added Freon and the air was super cold, let it run for 15mins, turned the car off, then went to drive it, the air was hot, checked the pressure and it was extremely high on the low side. Would the dryer cause that?
Hi Julian - I hope you didn't overcharge the system. This doesn't sound like a bad dryer issue. What was the pressure on the high side when AC was on and is the pressure around equal when the car is off?
@@masood-tv I wasn’t able to check the high side. It was odd that the pressure was fine when I added Freon, stable, blowing cold air, and the compressor was kicking on and off like it should. I turned the car off, went inside, came back out, cranked the car, it wasn’t blowing cold air, checked the pressure on the low side and it was extremely high. I had evacuated the system completely and only added 1 1/2 12oz cans of Freon. The car in question is a 2000 CLK430.
The car did the exact same thing before switching the expansion valve out. Went to add Freon and it was extremely high on the low side. That’s what prompted me to switch out the expansion valve. No Freon was added for it to have high pressure before the valve swap.
Checking the high side pressure will give more clues. You could have a bad or partially blocked condenser or even a bad dryer. But I would have the condenser checked first.
@@masood-tv thank you very much for you feedback and willingness to help. I’m going to have a diagnostic done on it to pinpoint exactly what is going on with it. I’ll get back with you on what it is so maybe it will help you or someone else.
@@julianmcalister6865 Looks like something is clogged like condenser, AC hose and AC expansion valve filter, evaporator..
I am learning a lot from your videos.
How long does it take to replace the expansion valve?
Did you cut the plastic rivets with a chisel when you removed the part, but when you put it back together you are installing new plastic rivets?
Thank you. Expansion valve should not take more than 4hrs. You can replace the rivets, I didn't.
Hello I have 2001 E320, ac don’t work. It’s was okay but then battery died and then ac doesn’t work. Clutch is not coming on. Can suggest any fix?
Hi Sukhbir, please test at compressor to see if it is getting power and ground.
Hi I have a 2005 W211 merc, my AC blow hot and cold air on the vents at the same time what I mean is if my ac is on other vent blow hot air while others blow cold air. It has an independent climate control. What could be the course for this
Hi - I think you should check the pressure in your system. You may need more Freon. It is a closed system, if the pressure readings indicate that you are low on Freon, you should first determine why. Perhaps, there is a leak... Good luck.
It's AC gas problem
thats the heater control valve
I have a w211 that when it’s summer and very hot, the whole system stops working. No air coming out, no buttons work. It only happens at times. Also I connected manifold gauges and the pressure was way over. Could this be a heater control valve (or changeover vslve) or an expansion valve problem? What could it be?
Hi Gedion, it is hard to tell. High pressure usually indicates too much freon in the system or some kind if a blockage...such as a bad or failing condenser. If no buttons activate anything, the faults may lie in the sensors or the electrical system.
@Masood Thank you for the response! That’s the weird thing, it only happens when it’s very hot outside. The buttons worked, lit up but no response in the fan turning on (no heat no cold air coming out.) But once it’s cool outside it would be just fine. Last problems were last summer and I fear since summer is coming up and wanted to address it now!
One thing for sure is I remember one of the pipes looking almost frozen when I went to check with gauges.
@@gedionsamuel2256 - if you remember frozen lines, chances are there is moisture in your system...perhaps due to a leak. You will need to pull the moisture by vacuum, and see if vacuum holds. If not determine source of leak and fix.
I have a Mercedes benz s430 an the compressor went bad so I replaced it an I turned the air on it blowed for about 2 minutes an the cut off I checked under the hood and my a/c line was completely frozen with ice and it never worked again I checked fuse they were good idk what to do
Hi Draco, it sounds like the symptom of a bad expansion valve. Did you vacuum the system thoroughly when you replaced the compressor? Did you also replace the receiver/drier? Moisture must have entered the system...take the car to a mechanic for a free diagnosis and estimate to find out what is wrong.
Very good
Thanks, Larry.
What are the symptoms of bad expansion valve
Hi Mohammed. If the expansion valve let's too much refrigerant thru, you will get frosted air from the vents. If it is clogged, you will not get enough cold air or may get warm air instead. Either condition will destroy your ac system.
@@masood-tv I am not getting cold air nor warm air. I am trying to make sure if it is not the expansion valve before replacing
Do you get any air from the vents,
Masood I was able to replicate the issue today. It was a stored fault on A/C module. I used Icarsoft I980 to clear it. Thank you for your help
@@mohammedalherz7979 - great, I am glad your problen is fixed. Take care.
Hard work but I well do it
It is but will save you money and it is very rewarding.
Hi, thanks for your video. My W210 has got an issue of making whining noise while AC is on. This noise used to be heard if foot release from right pedal (decelerating, constant speed or braking). Test drive video captioned as th-cam.com/video/cAsos7qd_6E/w-d-xo.html
No idea what's going on, mind to seek for your expert advice / comment? Thanks again.
Hi G Bush, thanks. Try driving the same way with the heater on. If you hear the same noises, it may be your blower.
@@masood-tv Yes, same noise for both heat and cold air.