Air conditioner acting up. Please help
Junior Member
Joined: May 2015
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140 208; e 38
no air coming out from the center vents a mouse ate on the vaccum tubes 2 from a vaccum tank and 2 that goes to the recirculation flaps but I have the same problem the compressor kicks in and then shut off some blockage in the low side replacing receiver drier expansion valve compressor and repair the vaccum leaks ....
Last edited by e reyes; Jul 26, 2016 at 10:30 PM.
Junior Member
Joined: May 2015
Posts: 48
Likes: 4
140 208; e 38
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
no air coming out from the center vents a mouse ate on the vaccum tubes 2 from a vaccum tank and 2 that goes to the recirculation flaps but I have the same problem the compressor kicks in and then shut off some blockage in the low side replacing receiver drier expansion valve compressor and repair the vaccum leaks ....
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Yeah i know, same here, i cant even drive my car its black with black interior its like a hot frying pan
Wanted to tell you something, i don't know if you did it or what year is your car, but i took my in car temperature sensor with aspirator blower its located by sunroof switch. that thing was full of dirt. Took brake cleaner and just 1 quick spray made it like new. So if you didn't check it yet, it would be a good time to do it.
Wanted to tell you something, i don't know if you did it or what year is your car, but i took my in car temperature sensor with aspirator blower its located by sunroof switch. that thing was full of dirt. Took brake cleaner and just 1 quick spray made it like new. So if you didn't check it yet, it would be a good time to do it.
Last edited by IgorE350; Jul 29, 2016 at 06:14 PM.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Hi all, back with the update.
Installed the new compressor, new expansion valve, new drier. Pulled the vacume on the system to get all the moisture out and see if theres any leaks, everything looked good. Filled it up with new freon 2.5 lb for what it called even got a little digital weight to get the corrects amount in.
My ac is working so good now,WOW! I can make ice now
I spent about $400 on everything Got a good deal on ebay for New Denso compressor for $285 Valve was $30 drier was $30 and freon was around $50
MB dealer give me price on parts only $1100 never called me back on labor, i just can imagine how much the labor would be
plus they told me to diagnose the problem would cost me $265
Wasn't that hard to replace it all, just take time, no rush and everything went smooth.
Thank you guys for all the help
Now i can enjoy this Beauty!
Installed the new compressor, new expansion valve, new drier. Pulled the vacume on the system to get all the moisture out and see if theres any leaks, everything looked good. Filled it up with new freon 2.5 lb for what it called even got a little digital weight to get the corrects amount in.
My ac is working so good now,WOW! I can make ice now
I spent about $400 on everything Got a good deal on ebay for New Denso compressor for $285 Valve was $30 drier was $30 and freon was around $50
MB dealer give me price on parts only $1100 never called me back on labor, i just can imagine how much the labor would be
plus they told me to diagnose the problem would cost me $265Wasn't that hard to replace it all, just take time, no rush and everything went smooth.
Thank you guys for all the help
Now i can enjoy this Beauty!
Last edited by IgorE350; Aug 4, 2016 at 05:35 PM.
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Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Junior Member
Joined: May 2015
Posts: 48
Likes: 4
140 208; e 38
I fix the vaccum leaks . it blows cold like 50 degrees F. at the evaporator sensor with 14 bar high side pressure and clean the inside temp sensor on top of rear view mirror I got the expansion valve and receiver drier now evacuate the old Freon I am going to reseal the a/c compressor just to learn more ... how cold is yours like 39 degrees f ?
Last edited by e reyes; Aug 17, 2016 at 11:51 PM.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
I fix the vaccum leaks . it blows cold like 50 degrees F. at the evaporator sensor with 14 bar high side pressure and clean the inside temp sensor on top of rear view mirror I got the expansion valve and receiver drier now evacuate the old Freon I am going to reseal the a/c compressor just to learn more ... how cold is yours like 39 degrees f ?
To be honest i didn't even check how cold it gets, but my wife been complaining that its freezing in the car so i didnt even bother to check. it gets really cold, i am very satisfied.
What did u mean by reseal the a/c compressor?
Was i right about new Denso compressor comes with oil already?
im kinda worried now
Last edited by IgorE350; Aug 18, 2016 at 12:02 AM.
Junior Member
Joined: May 2015
Posts: 48
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140 208; e 38
open the compressor and put new o rings shaft seals
www.centuryautoair.com
http://www.shopcenturyautoair.com/up...8_i1_w640.jpeg
www.centuryautoair.com
http://www.shopcenturyautoair.com/up...8_i1_w640.jpeg
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
open the compressor and put new o rings shaft seals
www.centuryautoair.com
http://www.shopcenturyautoair.com/up...8_i1_w640.jpeg
www.centuryautoair.com
http://www.shopcenturyautoair.com/up...8_i1_w640.jpeg
sounds like you almost there.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
Wow!!! looks like you had fun!! did you find anything that was wrong with the compressor?
How much time does it take to rebuild one and how much $$ for the new part for it? Just wandering if its worth to do it or just get a new one.
How much time does it take to rebuild one and how much $$ for the new part for it? Just wandering if its worth to do it or just get a new one.
Junior Member
Joined: May 2015
Posts: 48
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140 208; e 38
one day to clean the outside
2 hours to rebuild
and 40 minutes to put it back
the oil was brown
the new oil is clear like water
tomorrow or next week vaccum the syst
I add 4 oz of oil I fill it by the speed sensor......
when you do the vaccum the vacc. don't vaccum the new oil???
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
50 dlls in parts 20 minutes to take it down
one day to clean the outside
2 hours to rebuild
and 40 minutes to put it back
the oil was brown
the new oil is clear like water
tomorrow or next week vaccum the syst
I add 4 oz of oil I fill it by the speed sensor......
when you do the vaccum the vacc. don't vaccum the new oil???
one day to clean the outside
2 hours to rebuild
and 40 minutes to put it back
the oil was brown
the new oil is clear like water
tomorrow or next week vaccum the syst
I add 4 oz of oil I fill it by the speed sensor......
when you do the vaccum the vacc. don't vaccum the new oil???
No i dont think that vaccum pulls any oil out, pulls out moisture and air. i dont know how is that possible but it is
Junior Member
Joined: May 2015
Posts: 48
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140 208; e 38
24 expansion valve
and 2.6 lbs of r134
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Joined: Dec 2010
Posts: 115
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97 s320
my 94 did this and it was a wire on the compressor that indicates that its spinning before engaging the compressor clutch
the wire was intermittent so it would occasionally disengage
sometimes shutting the car and restarting would restore operation
check for a bad or broken speed sensor on the compressor
Steve
oops i missed the second page of posts ....disregard this post
the wire was intermittent so it would occasionally disengage
sometimes shutting the car and restarting would restore operation
check for a bad or broken speed sensor on the compressor
Steve
oops i missed the second page of posts ....disregard this post
Last edited by fireman1073; Sep 4, 2016 at 08:52 AM.
Thread Starter
Super Member
Joined: Sep 2015
Posts: 639
Likes: 36
From: Cleveland OHIO
01 ML55AMG 04 ML500 03 ML350 08 ML63AMG
my 94 did this and it was a wire on the compressor that indicates that its spinning before engaging the compressor clutch
the wire was intermittent so it would occasionally disengage
sometimes shutting the car and restarting would restore operation
check for a bad or broken speed sensor on the compressor
Steve
oops i missed the second page of posts ....disregard this post
the wire was intermittent so it would occasionally disengage
sometimes shutting the car and restarting would restore operation
check for a bad or broken speed sensor on the compressor
Steve
oops i missed the second page of posts ....disregard this post
