Join Date: Sep 2005
Location: Pembroke Ontario Canada
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The fan is tied directly into the temp sensor (1 sensor), to test the sensor remove the plug from the temp sensor and the fan should run, its on top of the thermostat housing and has a 2 wire plug. If the fan doesn't run your fan "Relay"or the AC switch may be the problem. Also check the relay for proper ground. The relay is grounded by its case to the fender so ensure theres no corrosion between them. The temp gauge is on a seperate sensor its beside the temp sensor on the thermostat housing and has a (1 wire) plug.
The AC is also controlled by the same system, with a switch added to the AC control panel in the cab, once you turn on the AC the fan runs automatically, if it doesn't again check the sensor. Remove the sensor and dry the pins out and use electronic cleaner spray to get rid of any access moisture. If that don't work, replace it.
1993 caravan SE 3.0L 3 speed 220,000 miles my second caravan bought new. over the past 13 years i've replaced: 1 fuel pump, 1 front crank bearing and seal, 3 timing belts & water pumps, 3 exhaust systems, 4 sets of sway bar bushings, 1 catelytic convertor, 2 sets of engine mounts, 1 set of front struts, 1 alternator, 2 batteries, 1 computer, 5 sets of tires, 6 sets of plugs, 3 sets of plug wires, 2 coils, 2 TPS, 1 IAC, 2 Speed sensors, 3 Map sensors, 2 Coolant sensors, 1 Drivers side door (rusted out) and countless oil changes.
2004 Grand Caravan 3.3L 46,000 miles. Picked up at an auction.
2005 Kia Sedona 32,000 miles "wifes van"
2001 Ford F-250 Quad cab (farm truck) 71,000 miles
1991 Honda si. (Gas sipper) Presently in the process of restoration 0 miles after restoration
1988 caravan 3.0L 3 speed, Finally drove her to the wreckers in 2002 with 297,000 miles on her. (May she rest in peace)
God sure made me handy with a roll of duct tape.
Last edited by Chet42; 03-03-2006 at 05:13 PM.