My Evap removal thread
06-25-2010, 02:28 PM
#26
MBWorld Fanatic!
Thread Starter
Thank you for the quick reply.
As far as the leak is concerned, in my car the AC system pressure goes from completely charged to completely empty in about 5 hrs, so I am pretty sure I will find the leak quick. I already added some red dye to it, and so far none is visible anywhere where I could see it.
I instected the expansion valve area under the hood, it's all clean. Like I stated earlier, I could hear distinct hissing coming from the dash vents, I have no doubt the evaporator is gone.
You mentioned that Reinz evaporator came in without the valve. Did you end up re-using your old valve or ordered a new one?
I found this online: http://www.partsgeek.com/catalog/199...vaporator.html Reinz (they misspelled the name, but the part# matches) lists for around $160, does it sound about right? They say "with valve", but it is pictured without valve, is that what you had too?
What else did you end up replacing desides the evaporator and the heater core?
Thanks again.
As far as the leak is concerned, in my car the AC system pressure goes from completely charged to completely empty in about 5 hrs, so I am pretty sure I will find the leak quick. I already added some red dye to it, and so far none is visible anywhere where I could see it.
I instected the expansion valve area under the hood, it's all clean. Like I stated earlier, I could hear distinct hissing coming from the dash vents, I have no doubt the evaporator is gone.
You mentioned that Reinz evaporator came in without the valve. Did you end up re-using your old valve or ordered a new one?
I found this online: http://www.partsgeek.com/catalog/199...vaporator.html Reinz (they misspelled the name, but the part# matches) lists for around $160, does it sound about right? They say "with valve", but it is pictured without valve, is that what you had too?
What else did you end up replacing desides the evaporator and the heater core?
Thanks again.
I would buy a A/C sniffer and use that to extend into the vent. 5 hours would definitely make an audible hiss, so I'd bet your evap is the culprit, but I would spend the extra $20 and get a sniffer to save you from spending $800+. The reality is once you get far into the job, even if you decided not to do the heater core, pods etc....you will change your mind real quick LOL.
I replaced Evap, Heater core, and pods, expansion valve, drier...and a few burnt out bulbs here and there....but those 4 items altogether come to ~$730.
You MUST replace the expansion valve + drier. You haven't posted if you are r12 or r134a, but I highy recommend back-converting if you can get your hands on some R12.
Last edited by ps2cho; 06-25-2010 at 02:33 PM.
06-25-2010, 03:47 PM
#27
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Location: Salem, OR
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08 Lexus GS350 AWD. 08 Lexus RX350 AWD - wife's. 94 MBZ E320 - still have it.
Mine is a '94, it had R134 from the factory. I don't know about the heater core, I'll inspect it and maybe pessure check it.
Drier? I wasn't planning on doing anything under the hood. I know that AC gurus suggest to replace the drier every time you open the system, but I've never done it before and never had any problems with it. Plus, it is so easy to reach, I can do it any time.
What are the vacuum pods? I know that the whole vacuum operated flaps and everything around them was greatly improved by MBZ in the later years.
I used to have an '86 300e, and I had all kinds of problems with AC controls in that car. This one - haven't had any yet, other then this evap failure.
What manual did you use? I have an access to the Alldata profesional website, hopefully that would do it.
By now I already replaced the upper engine wiring harness, the leaking head gasket, now this. What's next, transmission? My car has 160K miles, and from what I hear, the AT is due to fail any time.
I know, it is a 16-year old car, but still, it is annoying. Well, coule of years ago I switched to Lexuses, so far so good. My 17-years old daughter drive the Benz. I just want it to last one more year.
Drier? I wasn't planning on doing anything under the hood. I know that AC gurus suggest to replace the drier every time you open the system, but I've never done it before and never had any problems with it. Plus, it is so easy to reach, I can do it any time.
What are the vacuum pods? I know that the whole vacuum operated flaps and everything around them was greatly improved by MBZ in the later years.
I used to have an '86 300e, and I had all kinds of problems with AC controls in that car. This one - haven't had any yet, other then this evap failure.
What manual did you use? I have an access to the Alldata profesional website, hopefully that would do it.
By now I already replaced the upper engine wiring harness, the leaking head gasket, now this. What's next, transmission? My car has 160K miles, and from what I hear, the AT is due to fail any time.
I know, it is a 16-year old car, but still, it is annoying. Well, coule of years ago I switched to Lexuses, so far so good. My 17-years old daughter drive the Benz. I just want it to last one more year.
06-25-2010, 07:33 PM
#28
MBWorld Fanatic!
Thread Starter
Oh ok then I wouldn't worry. You only change the dryer if you are changing to a different oil or is exposed to the air for a long time. When you disconnect the expansion valve from the main lines, just seal them and don't worry about the dryer.
Not sure for your tranny...I think you have the 722.5 right?
Not sure for your tranny...I think you have the 722.5 right?
06-26-2010, 03:26 AM
#31
MBWorld Fanatic!
Thread Starter
I wouldn't worry about it. Just keep the fluid changes on time and pay attention to slippage or slower-than-usual/failure to go into reverse.
