Condenser Pusher Fan Installed
I wasn't happy with my cooling when stopped at a light or elsewhere. I have the 11 blade fan and a severe duty clutch on it already, which helps keeping the engine cool but not the A/C. When stopped at idle, the coolant temp doesn't get hot enough to have the clutch fully engage so, I get low air flow through the condenser until the engine temp gets up to ~205° with a 180° T-Stat.
I already had the Compressor wired up with a relay for full battery voltage when my clutch seemed to be slipping due to low voltage (~11.3V). Now I have over 14 Volts to its coil. All I had to do was add another relay for the fan using the same 15A fuse I have feeding the Compressor Coil. My EBL Flash-II has the capability of turning a fan on/off based on MPH. FWIU you'll get best air flow at ~45 MPH so, I will set the fan at 45 MPH and go from there. There's no sense in powering it up when it's not needed, it'll simply freewheel.
Here's the fan, it's a Dorman 621-300 for a newer Suburban made in Thailand - gotta be good, huh
It turned out, my Core Support was already drilled for mounting the fan. I had some "self tapping" bolts from another project that made the fit easy and painless. When I ordered the fan, I also got the (Weatherpack?) pigtail too. Then, with some 3/8" wire loom, covering the wires We ran it through an existing hole.
You must be registered for see images attach
Next was getting the wire from the ECM over to the relay. We removed the 1/4" and went with 3/8", then ran it to my relay, tapped the hot wire going to the relay box holding the Compressor coil relay.
You must be registered for see images attach
I decided not to use one of the relays in the box so, if I wanna add the "4 Hi" upgrade, I'll still have enough in it. So, we ran everything to the front and mounted a relay there next to the radiator. All connectors, except grounds, are hot melt insulated. Then we wrapped everything in wire looms.
You must be registered for see images attach
It took us a total of 2-1/4 hours including pulling/installing the grille, hanging the fan, wiring everything up. The power went out when we were doing this so we used a Propane Torch instead of a heat gun - some of them got a little black in the process
Now I need to hook up my laptop and play with the on/off speed for a while. It's getting hot enough outside to tax it and see results.