|
|
|
|
| Author |
|
|
I'm with Bill
Join Date: Feb 2005
Location: Jensen Beach, FL
Posts: 13,028
|
E21 BMW ac problem
PPOT braintrust I present my problem.
1981 BMW 320i. The AC compressor cycles on then shuts off if you try to turn on the interior fan blower, then both do not work. If I turn off the interior fan blower the compressor cycles back on, if I turn off the AC the fan will turn back on, both will not run together. I suspect there is a relay issue, cannot find which relay. Thanks in advance if anyone has personal knowledge and experience with this issue. Sent from my SM-G960U using Tapatalk
__________________
1978 Mini Cooper Pickup 1991 BMW 318i M50 2.8 swap 2005 Mini Cooper S 2014 BMW i3 Giga World - For sale in late March |
||
05-19-2019, 12:42 PM
|
|
|
Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
|
From your description it sounds like the relay / circuit is not holding a load. I have seen time and time again the relay(s) 'work' but when 'X' load is placed the contact points will not flow enough amps to sustain current because they are pitted / corroded.
You should find which relay it is, replace it with correct amp rating ( it's printed on the side) they are inexpensive. If no success you'll need a schematic for that to start performing voltage drop tests to find the issue
__________________
'15 Dodge - 'Dango R/T Hauls groceries and Kinda Hauls *ss '07 Jeep SRT-8 - Hauls groceries and Hauls *ss Sold '85 Guards Red Targa - Almost finished after 17 years '95 Road King w/117ci - No time to ride, see above '77 Sportster Pro-Street Drag Bike w/93ci - Sold |
||
|
05-19-2019, 04:11 PM
|
|
|
Registered
|
I think you are on the right track, I had a e21 for a while years ago, can't help you with the relay position but you should check the contact surface of the fuse also. Could be wired direct through the switch?
__________________
87 930, |
||
|
05-19-2019, 04:12 PM
|
|
|
Registered
Join Date: Apr 2010
Posts: 3,003
|
|||
|
05-19-2019, 06:12 PM
|
|
|
I'm with Bill
Join Date: Feb 2005
Location: Jensen Beach, FL
Posts: 13,028
|
Quote:
Actually 4-6 contains the answer I was looking for the AC Relay is on a dash brace under the right side of the dash, I was going crazy trying to locate it in the fuse box. I know where to look now. I figured the perfect 1st step was to replace the relay, I now know where to find it.
__________________
1978 Mini Cooper Pickup 1991 BMW 318i M50 2.8 swap 2005 Mini Cooper S 2014 BMW i3 Giga World - For sale in late March |
||
|
05-20-2019, 04:30 AM
|
|
1987 930
2013 KTM RC8R
1999 BMW R1100s
1987 BMW 535i
