Cooling fans The coolant fans would not shut off when u turned of the van and they would stay on until the battery cable was disconected.I have changed the thermostat and sensor.Finally all of a sudden now the fans dont work at all.Why Radiator fan runs continuosly when engine turned off- ran for two hours; engine not that hot. Is this a relay prob & is it the one behind the grill? Anyone got a rating on it? Really funky to disconnect the battery cable to shut it off...

The coolant fan temperature sensor detects the coolant is still hot, and keeps the fans on. And remains on until engine cools down. Check the coolant when cold for proper coolant level. If fans stay on all the time, check the coolant fan relay. Good-Day! . It will happen more in warm weather than in the cooler months.

Could be different problems.
The cluster issue could be a problem in the printed circuit board inside the cluster.
The cooling fan problem could be low coolant, a blown fuse, a faulty temp sensor, fan motor, or relay.

The cooling fans won't run until either the engine coolant temperature reaches about 218 degrees or the air conditioner/defroster are on. Once the engine reaches appx 218 degrees the fan will come on and run until the coolant temperature drops a few degrees and will then turn back off. If either the a/c or defrost are turned on then the cooling fan will begin to run to remove the heat from the a/c system and should stay on until either is turned off. If the engine is overheating in slow or stop and go traffic then the fan may not be working at all due to a bad fan motor or blown fuse.

Electric Engine Fan - Fan Switch

Removal & Installation
2.7L Engine

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. Disconnect the electrical connector .
4. Remove engine coolant sensor from coolant outlet tube .
   

To install:

1. Apply thread sealant to sensor threads.
2. Install engine coolant temperature sensor into coolant outlet tube.
3. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
4. Connect electrical connector to engine coolant temperature sensor .
   

3.2L And 3.5L Engines

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. With the engine cold, disconnect coolant sensor electrical connector.
4. Remove sensor.
   

To install:

1. Install engine coolant temperature sensor.
2. Tighten sensor to 20 ft. lbs.(28 Nm) torque.
3. Attach electrical connector to sensor.
4. Connect negative battery cable.

Removal & Installation

1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. Remove upper radiator hose.
4. Disconnect cooling fan electrical connector.
5. Remove cooling fan mounting bolts.
6. Remove radiator cooling fan assembly from vehicle.
   
   
   Fig. Removal and installation of the radiator fan-2.7L Engine shown
   

To install:

1. Position radiator cooling fan assembly in vehicle.
2. Install cooling fan mounting bolts. Tighten to 50 inch lbs. (6 Nm)
3. Connect cooling fan electrical connector.
4. Install upper radiator hose .
5. Fill cooling system.
6. Operate engine until it reaches normal operating temperature.
7. Check cooling system and automatic transmission for correct fluid levels.

Hope helps (remember comment and rated this).

Cooling fans only run when the temp,of the coolant get to about 215 to 218 degrees,and shut them selves off,when the engine cools down,if they do not cut off,the engine is not cooling down,now,if the ac is on,the cooling fans will stay on until the ac is shut off.

It would be normal for the cooling fans to run after you shut the car off because the power to the fans is turned on and off by a thermostat and not the key. Don't worry about it unless it runs for more than 15-20 minutes when you shut the car off. It may run that long in summer if the car is hot but less in the winter. Hope this helps.

if i disconect temp sensor fans come on cool engine but then no temp gauge

That's what I'd expect after unplugging.
This is sounding like a bad coolant temp sensor. Test it or replace it before you do anything else. Read this post on how to test an engine coolant temperature sensor

Test engine coolant temperature sensor Ricks Free Auto Repair Advice

Check it for any trouble codes,with the battery at full charge. Could be the coolant sensor for the ecm,but need some more info.

couple posabilities first run car up to temp then turn off...when fan stays running unplug the coolant temp sensor for the fan< there are 2 other is for comp/gauge> if fan turns off replace sensor if not replace relay for cooling fan

in the front bumper on driver side behind the front grill lttle rectangular piece with dimple on it that our problem fan relay check it out pierre