1999 Jeep Grand Cherokee A/C Problems
07-31-2017, 02:16 AM
#16
Old fart with a wrench
You have to look at the fins in the squirrel cage to see which way they are designed. They act as scoops to pull the air from the center outward.
07-31-2017, 06:41 AM
#17
CF Veteran
That's true. You can look at the fins, which means you have to remove the fan assembly to observe it. There's a functional alternative too - where you only unplug the connector at the fan and won't have to remove the fan assembly. Select your panel vents, run the fan in it's present state on high speed and feel the force of the air blowing out the vents. Next, regardless of how the air flow felt, swap the two fan wires and repeat. How did the air flow feel? Whichever of the two steps yielded the greatest air flow - and there will be a significant difference - that is the way you want it wired.
07-31-2017, 08:46 AM
#18
Old fart with a wrench
Now why didn't I think of that first? Must have had a senior moment or brain fart! Doing that is easy with mine because when installing the Chinese fan, it only had 2 bare wires, both black BTW, and I used spade terminals on them. Female for power and male for ground.
08-01-2017, 01:39 PM
#19
CF Veteran
I crimped a set of reversible extension leads out of the 12-gauge black and red wires left over from the Mopar harness kit. Why another set (you might ask)? Because, speaking of senior moments, I can never find the set I made during the last harness repair job! I will probably do same with this new set and so-on!
The leads of this repair harness were long enough to connect from module to control but I cut them short and solder-sleeved the joins. I don't waste the trimmings though. Those scraps will make future probes, splints & splices.
The leads of this repair harness were long enough to connect from module to control but I cut them short and solder-sleeved the joins. I don't waste the trimmings though. Those scraps will make future probes, splints & splices.
08-01-2017, 03:50 PM
#20
Old fart with a wrench
Funny you should mention wire. A friend of mine once worked for a supermarket warehouse maintaining their big rigs. They installed an engine monitoring system on all their trucks which included a wiring harness with 14 and 16 gauge wires about 6 feet long. They had 4 kits left over and threw them out! He gave them to me and I've been using them for about 10 years now! There's like 8 different colors in these harnesses with a big cannon plug on the end.