|
|
|
|
|
|
|
#1
05-17-2007, 01:54 PM
|
|||
|
|||
|
Question about A/C on my 190E
Have a funny A/C problem on my 190E.... It seems only working in the morning and evening time. Only not working in hot afternoon.
I replaced the evaporator last year. Checked feron is enough in the system. Replaces pressure switch, dryer, aux fan switch when replaced evaporator last year. I tried using 2 different A/C relays. Still have that problem. It seems the compressor not kick in. Double check the belt tensioner is good... Belt doesn't slip. Anyone can guide me out what i should look for? thanks 
|
|
#2
05-17-2007, 02:03 PM
|
|||
|
|||
|
Have you hooked up gauges to determine pressures? If overcharged, the pressure can actually be *too* high which will trigger the high-pressure switch and prevent the compressor from running. The pressure may just be lower in the morning and evening (due to cooler ambient temps) which may be allowing the compressor to run.
Just a thought...
__________________
08 W251 R350 97 W210 E320 91 W124 300E 86 W126 560SEL 85 W126 380SE Silver 85 W126 380SE Cranberry 79 W123 250 78 W123 280E 75 W114 280
|
|
#3
05-17-2007, 02:12 PM
|
|||
|
|||
|
Yes, i bring it to repair shop to check the pressure. They said that the pressure is fine.
I used it almost whole year from last summer until recently. It was totally 100% working. I don't think so that is too much feron in the system.
|
|
#4
05-17-2007, 02:44 PM
|
|||
|
|||
|
any time i have had an issue like this....it was not enough refrigerant.
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k  1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
|
|
#5
05-17-2007, 02:51 PM
|
|||
|
|||
|
ok! i will try another shop.
|
|
#6
05-17-2007, 03:29 PM
|
|||
|
|||
|
three other things you might check.speed sensor on compressor might be reacting to loose belt on engine,aux fans may not be operational,[and they need to be on hot afternoon]and there is an o/heat cutout switch in the thermostat housing that may have gone bad.
__________________
David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg
|
 |
| Bookmarks |
|
|
Hybrid Mode
