dittoI run an electric fan and no, it doesn't need it, SO FAR! But living in the Bay Area it's hard to tell what you'll run into. If you get into a rushour gridlock on a hill, on a hot day you could need a fan.
Mine comes on automatically from a temp sender at lower water inlet from block. In addition I have a lighted master over ride switch in case I want to engage manually. Mine never needs the fan, so far, but I switched it on twice.
I have a gut feeling about that temp switch. There is also an inline fuse between the switch and the fan. I think this combination is subject to failures which may be the primary cause of head gasket failures in the P30 vans. There is no way to test the switch when it is installed other than monitoring the water temperature by using a gauge. I would highly recommend using Jimmie's method along with the temperature gauge.Mine comes on automatically from a temp sender at lower water inlet from block. In addition I have a lighted master over ride switch in case I want to engage manually. Mine never needs the fan, so far, but I switched it on twice.
Thanks, Bob, but I have to give credit where credit is overdue. I ain't no geeneous and it was Paul in NY that mother-henned me through my swap: it was his idea to install the manual over-ride with lighted indicator! My donor truck already had that setup in it, but it was obviously added by a later owner and not a stock item.I have a gut feeling about that temp switch. There is also an inline fuse between the switch and the fan. I think this combination is subject to failures which may be the primary cause of head gasket failures in the P30 vans. There is no way to test the switch when it is installed other than monitoring the water temperature by using a gauge. I would highly recommend using Jimmie's method along with the temperature gauge.
I hear tell that once up to 50 MPH, you can shut down the Cummins and switch to the Tarus Fan and go electric ha ha. Its truly quite a fan.That Tarus fan will suck a golf ball through a garden hose !
Well I have dismantled one that had neither a JWAC or an air to air cooler and it came with an electric fan. It was an early retrofit that came with the Chevy SM-465 four speed manual transmission. I still have that fan somewhere but the engine is long gone after being transplanted onto a wood chipper. The van was an older 79 model Grumman surplussed by Frito-lay in 2000.Just for reference the P30's without any sort of intercooler had no fans that I have seen, only the intercooled versions had them.
I have researched a little and found out that my fan is a single-speed fan. Taurus fans can be two-wire (single-speed) or three-wire (two-speed). I didn't know that. They are both 16 inch fans and have a capacity around 2000 cfm. I won't have a problem wiring it as a single-speed.I'm about to wire up a '91 Taurus SHO fan. I was told that it is a two-speed fan. Does anyone on the forum have a schematic or know how it gets two speeds? The fan only has one brown wire and one black wire.
Here is a link to a Jeep site installing a Taurus 2 speed fan. It may be of help to you.I have researched a little and found out that my fan is a single-speed fan. Taurus fans can be two-wire (single-speed) or three-wire (two-speed). I didn't know that. They are both 16 inch fans and have a capacity around 2000 cfm. I won't have a problem wiring it as a single-speed.