Best Answer

I have seen this before more than likely your coolant sensor has a internal short and needs to be replaced.

User Avatar

Wiki User

โˆ™ 2004-10-30 15:38:01
This answer is:
User Avatar
Study guides

Where I can purchase purchase HID Fargo ID card in Dubai

See all cards
No Reviews

Add your answer:

Earn +20 pts
Q: What is wrong if the cooling fan comes on when the coolant sensor is unplugged but when it is plugged in the fan and AC will not work?
Write your answer...
Still have questions?
magnify glass
Related questions

What is the timing on a 1990 dodge shadow?

12 degrees with the coolant temperature sensor unplugged.12 degrees with the coolant temperature sensor unplugged.

What is the ignition timing setting for a dodge charger 2.2 gas engine?

12 btdc with coolant sensor unplugged for most 2.2L's12 btdc with coolant sensor unplugged for most 2.2L's

Cooling fans only comes on at 250 degrees if ac is on or when Coolant temp Sensor is unplugged. changed coolant temp relay still the same?

Might be the sensor, each fan has its own relay

Why wont truck start with map sensor plugged in but starts with it unplugged?

odds are the sensor needs to be replaced

Why does your cooling fans not work when plugged in to the temp sensor but work when its unplugged from the temp sensor?

Is the car overheating? As a safety measure, the fan will come on when the coolant sensor is unplugged. This is in case the wires come unplugged or the sensor goes bad so that the car will not overheat. If you have A/C the fan should come on within a few seconds after turning the A/C on. The fan on the car does not come on simply because it is plugged in to the sensor. It first has to get fairly hot....something like 238 degrees before the fan will come on. This is a how a correctly functioning fan will work. If it is not coming on when the gauge reads above that you may have to take it in to find out why. It could be a bad sensor....likely......or that the computer is not reading the signal correctly and thinks the car is running cooler than it is.

Does the coolant level sensor turn the fans on?

No, the electric cooling fans turn on and off by a signal from the coolant temp sensor. The coolant level sensor only illuminates the low coolant light when you are low on coolant.

Where is the coolant sensor located on a 05 Chevy aveo?

Where is the temperature cooling sensor located

Daewoo lanos overheating?

Many possibles, coolant leakage,headgaket,plugged radiator, stuck thermostat, bad cooling fan, coolant sensor, radiator fan relay, ECU malfunction, rodents chewed on the ground wire for the cooling fan, or about 20 other possibles

Why new cooling fan wont stop running?

check to see if the cooling fan temp sensor is unplugged. the sensor is located on the drivers side of the engine. the heater hose comes in from the back of the engine. there is a manifold with two sensors plugged to it. the one toward the rear of the car is the one. if this is unplugged the engine light will stay on and so will the fan. if this is not the culprit there are quite a few things that can make this happen.

What Probable fix for a 92 Caprice 305 engthat has atemp gage that does not move and over temp light on but car is not overheating?

Sounds like the coolant sensor is unplugged....or possibly a bad sensor. Check to make sure it's plugged in...replace if needed.

1994 dodge 2.2 liter timing spec?

12 deg btdc with coolant sensor unplugged

How do you turn off the low coolant light on a 2001 Chevrolet Impala when the level is ok and where is the sensor located?

The low coolant sensor is located in the side of the radiator. It can be unplugged but then how will you know it is low.

People also asked