[Jeepfreak81]

Originally Posted by DTrem08

Ok I'll have to look into pickin up one of those hayden kits then

You will still need to wire the high speed through the 80 amp 100% duty cycle relay as the high speed cannot be run by the thermostatic switch. (that is only 30 amp)

[DTrem08]

OK, so your saying I should take back my ford starter relay that was posted earlier?

[Jeepfreak81]

Originally Posted by DTrem08

OK, so your saying I should take back my ford starter relay that was posted earlier?

If you don't, carry a spare. Starter relays are not 100% duty cycle and can (will) fail eventually.

Here are the stats on the Bosch Relay, though these have failed too I hear, just not NEAR as often

12 volt high amp power electrical relay 75 AMP - Tyco / Bosch 0 332 002 150

# tyco v23232d0001x001 / 1904000-1
# with bracket
# 4 terminal dual contact
# 75 amp - 100,000 cycles
# Motor load: Normally open 60 amp / 400 Amp inrush @ 40,000 cycles
# SPST, dual contact
# Resistive load Normally open: 100 amp - 100,000 cycles
# Contacts: Silver Tin oxide
# Coil operating current 290 mA
# Equivalent coil resistance: 46 +/- 3 ohm
# Pull in voltage:<= 8.0V
# Drop out voltage: 1.5 - 4.0 V
# ELV compliant
# replaces cole hersee: ra-700112-nn
# replaces Potter & brumfield: vf7-11f11
# replaces Bosch 0-332-002-150

[EMTimZJ]

DTrem, yes, the yellow tracer is for high, the orange tracer is for low, and the solid black (no tracer) is ground

[_Kyle_]

Would a Cherokee fan work for being swapped in as well? I'm really considering doing this before I go to Silver Lake this summer in early June. I kinda want a Tranny cooler as well, but I don't think I need it as much...but i'm in between this two mods right now anyways and what I really want/need to do.

[reesycup]

This is probably dumb question and probably has already been covered, but on the fan itself does it bolt right to the radiator or are there some mods required?

[Jeepfreak81]

Originally Posted by _Kyle_

Would a Cherokee fan work for being swapped in as well? I'm really considering doing this before I go to Silver Lake this summer in early June. I kinda want a Tranny cooler as well, but I don't think I need it as much...but i'm in between this two mods right now anyways and what I really want/need to do.

If it is the Grand in your avatar I would worry about a tranny cooler first if your going to the sand dunes. The sand is hell on trannies and heats them up quickly.

Originally Posted by reesycup

This is probably dumb question and probably has already been covered, but on the fan itself does it bolt right to the radiator or are there some mods required?

Mods are required, fabbing brackets for the most part. Pretty easy to do though.

[_Kyle_]

Alright. I think i'm going to end up doing both before I go anyways. I have about 5 weeks or so before I leave, 2 of which will be out of school so I will only have to work during the day. Now I need to find a cheap Taurus fan and the wiring - already planned on ordering a B&M Tranny Cooler from Summit.

Edit: Will the Bosch relay on the bottle on this page work? http://www.wiringproducts.com/index1.html Or should I find something else?

[Hamid]

Very happy to join this forum, I guess I found all what I was looking for in this site specially cooling and overheating issues on ZJ's.

Great post, wonderful job Tim, lots of info from the posted replies, I just wanted to know if I could install this electric fan on my 93 ZJ laredo, 4.0L.

Thanks.

[5.9 ANDY]

i dont see any reason you couldnt put this on a 4.0.

[FPKites]

You can definitely put it on a 4.0, but my understanding is that you might have some clearance issues. It has been done, but some creative "carving" had to be undertaken on the Ford shroud.

[Casper4x4]

wow man this is great i am gonna be doing this upgrade next week before my pismo trip. Now with this fan you are supposed to be getting better hp and mpg is this true?

Alonzo

[nashmd454]

Originally Posted by Casper4x4

wow man this is great i am gonna be doing this upgrade next week before my pismo trip. Now with this fan you are supposed to be getting better hp and mpg is this true?

Alonzo

you free up some...but not much...don't expect great things. Kind of like running on tires that are under inflated. You air them up and you get better mileage and feel that the engine isn't sluggish to get going...that is all.

[Heap-O-Jeep]

i dont get the reason behind this install? i know that when your driving slow and using lots of engine torque and under heavy load the mechanical fan cannot draw the air to cool properly. so an electric one is in order. but why a taurus electric fan ? why not get a slimline puller s-blade fan from derale and use both ? or find a dakota s blade fan in the junkyard? my dads dakota has both from the factory and the electric fan is only used for the air conditioning. i have seen a few used jeeps come through my dealership and saw that the cooling fan was hydraulically actuated that was a sight to see. i say keep the regular fan and add the slim puller or pusher fan if front of the condenser. rather than add tons of extra wiring run one relay and one temp. sensor done! some of the 99-01 jeep electric cooling fans stop working because the dielectric grease dries out and then it overheats and fries the transistor. then the engine overheats because the fan wont turn on.

[tirus89]

@ Heap-O-Jeep:
I believe that the taurus fan pushes a hell of a lot more CFM's than the stock fan. Plus, with the availibility of the fan, its a popular swap.