Originally Posted by TINTINUAE
Ok just out of interest, I have a 98 5.2 ZJ and it runs pretty cool considering the temp out here in the middle east, obviously mine has the Electric fan already installed, so would dropping a taurus fan into my rig benifit me at all or would it be the same, I guess the only change s I will really need are to snip my wires and connect them up to the taurus fan wires and possibly some trimming/fixing alterations. Is this ture or will I need new relays and such too? Thanks guys.
Tony, if you have the 5.2 it does NOT have the electric fan installed, it would only be the mechanical clutch fan driven by the belt.
For the ZJs (93 to 98) it is only the 98 5.9
that has the electric fan (Efan) so if yours is the 5.2 you would basically need to do the whole installation as has been described here.
BTW - While the Taurus fan does have a bit better flow than the Jeep fan, the Taurus fan swap is not really done as an upgrade. It is done when the Jeep Efan fails as a lower cost alternative to buying the Jeep Efan.
In the US the replacement fan motor for the Ford Taurus/Mercury Sable runs about $80 USD. Jeep wants something obscene like $300 USD (or more) because they only sell it with the whole housing.
So, if you had a good running fan in a 98 5.9 Jeep you wouldn't do this swap until the electric fan was failing.
For the Jeep 5.9 owners that do this swap, the only thing they have to change is the connector for the motor. (no relays or anything else)
That's assuming you get the right Ford motor. There are several models and some have different blade/shaft setups.
Some people solder the Jeep motor connector onto the Ford Efan motor wiring harness. Instead, I highly recommend finding a wrecked Ford Taurus/Mercury Sable in a junkyard and getting the body side connector for the Efan and soldering it in place of the Jeep body side connector. That way if you have to replace the Ford Efan motor again it will be an easy plug in job instead of having to solder the Jeep connector onto the Ford motor again.
Another less used, less known option for converting to an Efan setup from a mechanical fan setup is what I'm going with on my 93 5.2 Jeep - if you can find a wrecked 98 5.9 Jeep, pull the Efan wiring harness, upper and lower radiator hose assemblies and one AC line from that. (the temp switches in the two radiator hoses and the pressure switch in the AC line control the turn-on and high/low settings for the two speed Efan)
You wouldn't know it from looking at it but if you tear into the 98 5.9, the wiring harness for the Efan, relays etc is actually a nice separate harness that is just taped to the main harness in a few places.
To make it just like the factory installation you would need to also get one of the hoses from the AC system. It has a second pressure sensor in it for the Efan so it comes on when there is a load on the AC system during AC or defroster use.
As an alternative if you don't want to open your AC system and replace the hose you could put a jumper across the connector for the AC line. Not a great option though as the fan would run whenever the Jeep was running.
Better option might be to jump those wires to an in-dash switch. Only downside to that is you have to remember to turn it on. (NOTE: the temp switches in the hoses might turn it on anyway - can't remember for sure how that works)
So depending how comfortable you are with making you own wiring and how easily you can find a wrecked 5.9 Jeep over there - that should help you decide which way to go.
sba lekhir - Z