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1992 190E AC Question
very cold for the first 5 minutes of operation, once the car warms up - compressor stops working, does not cycle on off - sound like low freon or compressor woes or niether - hot here and need the air, why oh why don't I check these things out before I actually need them
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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Have you verified the belt tension is correct? If the belt slips, the compressor will shut down to protect the belt.
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2012 E350 2006 Callaway SC560 |
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belt tension OK , freon level good, the guy wh checked it indicated "probably electrical, just what I need to chase an electrical gremlin
Any common areas to look at here, fuses good as far as I can tell, it does come on. COuld it be the temperature ACC control ( blue /red dial ) ? All input welcome!
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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Quote:
It turned out to be a blown fuse for the aux. fan. I replaced the fuse and the aux. fan operated. That was a few years ago and it is still working. Dave
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1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible |
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I will check that out, thanks, where might this fuse be?
Should the fan come on when the AC is on? Is there a way to check operation of the fan independent of the AC? How does the main fan work and is it related, can it be tested? Is there a temp switch relay and where might that be.... so many questions so little time Thanks for any input
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace Last edited by meltedpanda; 05-04-2007 at 09:03 AM. |
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Quote:
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1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible |
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More stuff
AC Condenser
AC/Refrigerant Temperature Sensor AC Cutoff Switch AC Evaporator AC Expansion Valve AC High/Low Switch AC Relay So which of these could be a culprit and once again , how do I check them?
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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sounds much like aux fans..
with the engine off....see if you can spin it freely with your hand... it could have locked up and fried a fuse...
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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] |
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So, step number one is to verify correct operation of aux fan. You should have a 3 prong Temp. Switch that looks something like this. If you unplug the connector that goes on the 2 prongs and short them out at the connector, the aux. fan should operate. In theory, that is what the temp. sw. does...the 2 pins make continuity when the temp. reaches 110 degrees C.
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1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible Last edited by slk230red; 05-04-2007 at 02:10 PM. |
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Will do this weekend, I will post back findings
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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slk230red
you were right on, thanks for the advice, it was the temp switch for the aux fan all well and cool............
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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Quote:
Dave
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1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible |
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Just a tip, you might want to check your pressures because if the system runs for a while without the aux fans spinning it can lose some refrigerant out the pressure relief valve. As a result, though your aux fan now works, your charge might be a few oz. low. You won't notice until it's about a hundred degrees out...
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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 |
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CRAP! Hot again!
So here is the deal, I thought I had it fixed…….
I replaced switch after the shorting out method worked and much to my chagrin now it does not work . Here are the symptoms I do know the aux fan is working With plug shorted everything works, fan, aux fan, compressor cycles on and off, responds to the temp dial, aux fan even shuts off after a time, turn it to max cool and it works fine Connect to the switch and the electric fan stops, compressor cycles occasionally but not enough to cool Now I am lost, all connections are secure, no bubbles in sight glass. I need to take it on a trip, can I just short it out and make it work , is this a bad thing? Could my pressures be the issue, It would seem that it should still work at least the electrical part. Are there other switches I should check Here is the other issue, the temp gauge never really goes above 85-90C, could that also be an issue, I thought the aux fan worked when the compressor got hot or pressure was high HELP
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace Last edited by meltedpanda; 05-11-2007 at 10:09 PM. |
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please
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Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
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