Questions & Answers for: test coolant fan relay 1999

overheating 1999 dodge caravan 3.8 fans not coming on relay ok, direct power to fans ok, is ther a senser Coolant temperature sensor by thermostat housing also comes into play with rad fan operation.

...Fan Relay. The other things that will set off a P1491 are - *Coolant Not Topped Off & Not In Contact With Coolant Sensor Tip *Coolant Temp Sensor Is Faulty *Bad Ground To Fans and/or Cooling Fan ...

1999 Dodge caravan sport 3.3L engine. Radiator 1999 Dodge caravan sport 3.3L engine. Radiator fans will not come own (fuse ok). Check relay & coolant temperature switch.

...fan motor is bad, and/or the relay is bad. You will need to check the motor for power when the fans should be on. like a/c on with eng running. If no power there, then the relay may be bad. the relay ...

...test before spending $200 on another fan assembly. Any voltage checks? What readings at what pin? Worn out or defective fan (spinning slow) and drawing too much amperage, thus blowing the fuse should ...

...coolant fan switch is the key here, It'll be mounted either on the radiator or a thermostat housing and controls the cooling fan( large brass unit with 2/3 heavy wires ) ! A replacement will be the ...

fan is turned on by the temperature of the coolant which is sensed by the coolant temperature sensor which sends the message to the PCM. The fan will not run during cranking until the engine starts no

...the above link contains test info for the circuit. 3 main problems if the fan itself is good: 1 ) corrosion in the relay socket..especially the ground 2) coolant temp sensor bad 3 ) relay ...

...coolant temp. sensor or Rad fan control module/relay. A good technician can test system, diagnose and estimate repair. Check the attached links,instruction and guides, Good luck "I hope this helped ...

...relay clicks real fast .eng won't turn over Test battery to see if it is good. Hello Bob this Manual is very helpful. It helped me with same matter you should also try this... Copy the link and go to ...