07-31-2018, 05:35 AM
(This post was last modified: 07-31-2018, 06:44 AM by robbybobby.)
I have searched for and read a lot of information pertaining to this subject, but I am not able to solve my problem. The condenser fan will not engage at all. I just replaced the compressor, receiver drier, thermal expansion valve, o-rings, retro-fitted for R134a, pulled a vacuum, recharged system and AC system kicks on and runs great blowing cold air. Here are things I have checked:
AC fuse at relay location is fine. 12v+ on all red wires
If I unplug the high engine temp sensor, it shuts down compressor. Leading me to think it's working properly.
I get 12v on Yellow and Green at the Hi/Low switch.
Compressor works fine.
Swapped compressor and condenser fan relays and compressor works on both relays; leading me to think relay is not the issue.
Removed relay and jumped power from Red to Black/Blue, fan works great.
Readings at fan relay plug with relay connected: Red - 12v, Yellow - 12v, Blue/Red - 12v, Black/Blue - 0v.
I am assuming I have an issue with the AMP? Since the Blue/Red is reading 12v and not ~0v? Again, everything else seems to work flawlessly. Is the fan not supposed to run constantly? Even when the engine is warmed up and hot, the condenser fan will not engage...
Any help is greatly appreciated. Thanks!
As signature states, this is on a 1992 Geo Tracker, 8v.
AC fuse at relay location is fine. 12v+ on all red wires
If I unplug the high engine temp sensor, it shuts down compressor. Leading me to think it's working properly.
I get 12v on Yellow and Green at the Hi/Low switch.
Compressor works fine.
Swapped compressor and condenser fan relays and compressor works on both relays; leading me to think relay is not the issue.
Removed relay and jumped power from Red to Black/Blue, fan works great.
Readings at fan relay plug with relay connected: Red - 12v, Yellow - 12v, Blue/Red - 12v, Black/Blue - 0v.
I am assuming I have an issue with the AMP? Since the Blue/Red is reading 12v and not ~0v? Again, everything else seems to work flawlessly. Is the fan not supposed to run constantly? Even when the engine is warmed up and hot, the condenser fan will not engage...
Any help is greatly appreciated. Thanks!
As signature states, this is on a 1992 Geo Tracker, 8v.
1992 Geo Tracker 5 speed 4x4 soft top, 8v with power steering and A/C