That makes sense now. I got it all installed and working. Only thing is i have it directly to battery so the fan runs a little after I stop driving. Any idea where a wire is that I can attach to that only gets power when the ignition is on?
depending on the fan you have there will be 2 positive posts
1.one for battery power (were the amperage will come from)
2. and one that when voltage is detected on this post, the fan "knows" when to spin
you can use #2, connected to a switched source (cig lighter) to tell the fan to not spin when the fan is off
if ur fan simply has a positive and negative with a temp probe, hook a replay up to your positive and use a switched source (cig lighter) to click the relay on and off
It has a yellow voltage sensor wire that I currently have attached to the battery, but the cig lighter is a great idea,I will tie into that one I think. But does something have to be in the cig lighter for it to work?
some fans have a post for a/c if yours does, tie the hot wire from the a/c clutch to that post
Can you point me in the right direction for the "hot wire from the a/c clutch" ? The only wires I can find go to a sensor in the a/c lines. Tried that, but it caused the fan to never turn on. Tried both wires, same result. I don't see any other wires going to the a/c.
For those of you who wonder about the benefits, I will be doing a complete breakdown of what benefits I receive, including millage benefits.
First Impressions(Day 1)
1. Car is quieter when fan is off, the engine sounds better because there is no fan noise. Also way less noise on freeway.
2. Fan rarely runs, so far only when under 20 mph or stopped, and only for about 15-30 sec, and engine temp is perfect.
3. MILLAGE- I am currently on my first tank, I am only about 30 miles in, but the gauge visually doesn't seem as far along as normal, it looks promising, but I will keep you posted on final benefit, and also on my second and third tank.
4. POWER- I have a 4 banger, so I think the mechanical fan was a significant power drain. So far when driving in Sacramento I notice a little more power and I don't have to push the pedal down quite as much to get to speed.
NOW the biggest gain was on the freeway. I notice more and more power and gas difference the higher speed I go it seems. Cruising at 70 takes so little pressure on the gas now, and i can accelerate far quicker to this speed. I will keep you all posted on all changes, and on how it handles my drive into Nevada soon.
Sounds good! I was always curious about this mod, Finally did it myself, and I hope to clear it up a bit for other Jeepers with my results. I'm going to be around town quite a bit tomorrow, and might see what millage I got at the end of the day just for a preliminary test, then run a few full tanks through.
I used the flex-a-lite 475, which was a complete bolt on kit (and was actually very easy to install). The only issues I had were connecting it to a source controlled by the ignition (didn't do this yet so it runs for a minute or so after I turn the jeep off) and wiring it into the a/c so it runs with the a/c (can't find the appropriate wire yet).
The benefits are the same as mentioned above, a bit more mpg, quieter, and most importantly, more power. It's still a low output 4cyl, but this did make a difference even if it wasn't huge.
Well, its day 2, and I can feel a very noticeable power difference, but the biggest difference was the millage!
Average millage with mechanical fan= 220 miles per 16 gallon tank= 13.75 MPG
First results with electric fan=
45 miles per 2.75 gallon = 16.36 MPG
That is about a 2.6 MPG increase in fuel economy!
These results are both from city driving in Sacramento, Medium level traffic, and similar destinations with identical driving habits and the same driver.
I will be driving to Nevada tonight and returning tomorrow, so I will be testing the highway millage this weekend. Just wanted to give you all the preliminary results, things look promising for this upgrade!
This is the second upgrade(First was cold air intake) in my search to max out my millage and HP. Possible future upgrades are a 4.0L throttle body, and running lighter rims and/or tires. I will do write ups on those as well.