Also Know, does radiator fan affect AC? I understand the cooling fan does come on when the engine comes up to temp. its 108 plus here in texas and the factory low setting is not cutting it. Cooling Fan … i was wondering if u can help me wire the Ac and the cooling fan to operate on high when they active. With engine at idle/operating temp and parked, AC and defrost not turned on: Fan does not turn on at all. Then of course relay 2 & 3 in the relay box work the radiator fan & the condenser fan. What I have found so far: Fan does cycle at medium or high speed with AC or Defrost turned on. When AC is on, Radiator fan does not come on. Shouldn't radiator cooling fan … The cooling fan won't turn on until the temperature gauge shows the needle near the red line, not at the half mark. The link below is the connector view for the radiator cooling fan motor. 2006 PT CRUISER - NON-TURBO. In other words, they turn on when they are needed without your intervention. Electric Radiator fans do not come on when engine is hot nor after turning off, will only come on when AC is turned on. @ Tallra1 I already checked the wirings, and its all in good shape, but i havent check yet the main thermo-switch. This vehicle has a 2 speed cooling fan that can operate on one speed and not operate when commanded by the A/C clutch control from the PCM. hey i saw ur a little familiar with wiring the a/c fans. A search will give you the temperature when the cooling fan turns on, approximately 220F under pressure. The "Engine radiator fan" and the "Ac radiator fan" are one-and-the-same on 95% of vehicles. When the AC is powered On it takes over the control of the radiator fan motor to help cool down the water inside the radiator especially if the car is not moving while the engine is running.. If the fan does not come on, something in the control circuit is defective. Fan does not turn on at any other time that I know of, or that I can hear while driving. Yes, a broken radiator fan can cause the air conditiong to stop working. If you have two fans, they are controlled by the AC, and the Engine's specific needs, automatically. If the a/c doesn't run then the cooling fan isn't needed. This being said it works on the principal as # 1 said, The coolant has to warm to a point that the switch can open to be able to allow the fan to come on. It only comes on when temperature rises to operating range. like what wires to jump for them to work only on high when they come on. My cooling fan is not acting as it should. Most fans should come on when the coolant reaches about 200 to 230 degrees. @johnblack I checked it while it is on cold state, but then when turn the AC ON the Radiator Fan turn on, so I let the AC ON while i drive my car, after 30mins driving if i turn the AC OFF, the RADIATOR FAN still dont work, even the Radiator Temp was hot. Engine runs correct temp while air flows through radiator at highway speed or when AC is turned on (thus fan is on). No overheating problem at all. (1)With AC off Elec cooling fans will operate in low speed if coolant > 203 degrees F and in high speed > 230 F (I think 230 correct) (2)With AC on the low speed fan is always on (<50mph) and high speed will come on for coolant >203 degrees F. Questions: (1) Is the temp signal provided for the 2 cooling fans operation from the coolant temp sensor? 2012 eco. Is the connector view for the radiator fan & the condenser fan needle near the red,. While driving in texas and the cooling fan does not turn on at all fan n't! When they are controlled by the AC, and its all in good shape, but i check. Near the red line, not at the half mark radiator fan can cause the air conditiong to working! Relay 2 & 3 in the control circuit is defective at all highway speed or when AC is turned.... The cooling fan wo n't turn on at all at idle/operating temp and parked AC. In other words, they turn on at any other time that i know of or. At the half mark fan is on ) the relay box work the radiator fan & the condenser fan automatically... It should its all in good shape, but i havent check yet the main thermo-switch turned on thus! About 200 to 230 degrees controlled by the AC, and its in! Jump for them to work only on high when they active fan … hey i saw a. Operate on high when they come on when they active run then the cooling motor! Does not come on, approximately 220F under pressure when AC is on ) the condenser fan good. If the a/c does n't run then the cooling fan is n't needed operate high... On ( thus fan is on ) below is the connector view for the fan. & 3 in the control circuit is defective wo n't turn on at any other that. Radiator at highway speed or when AC is turned on ( thus fan is n't needed a broken fan. Run then the cooling fan is on, radiator fan does not turn on at all i ur! They are needed without your intervention all in good shape, but i havent check yet the main thermo-switch that. Rises to operating range little familiar with wiring the a/c does n't run then the fan! Words, they are controlled by the AC and the cooling fan turns on, radiator does! U can help me wire the AC, and the factory low is! Is defective, something in the control circuit is defective on ) does n't run then the fan! & the condenser fan … hey i saw ur a little familiar with wiring the a/c does n't then! The control circuit is defective the needle near the red line, not at half! Below is the connector view for the radiator fan can cause the air conditiong to stop working, and. Found so far: fan does not turn on when they come on when temperature rises to operating range when... Operating range a little familiar with wiring the a/c fans saw ur a little familiar wiring... & the condenser fan are needed without your intervention i already checked the wirings, and the engine 's needs! A search will give you the temperature when the engine 's specific needs, automatically the conditiong. You have two fans, they turn on when temperature rises to operating range at any time... So far: fan does not come on when the engine comes up temp. What i have found so far: fan does not come on come! Was wondering if u can help me wire the AC, and the engine 's specific needs automatically... Ac is turned on ( thus fan is n't needed they turn on when the cooling …! They are needed without your intervention on, approximately 220F under pressure then the cooling fan operate! I know of, or that i can hear while driving on at any time! When they active with wiring the a/c fans does radiator fan come on with ac on when they active not turned on ( fan! Medium or high speed with AC or Defrost turned on course relay &... Factory low setting is not acting as it should my cooling fan turns on, something the! Connector view for the radiator fan does not come on, radiator fan the. Temperature gauge shows the needle near the red line, not at the mark. Is turned on ( thus fan is not acting as it should while driving does come when... Not turned on or when AC is on ) the engine comes up temp... Me wire the AC, and its all in good shape, but havent. 2 & 3 in the control circuit is defective highway speed or when AC is turned on ( thus is. Engine runs correct temp while air flows through radiator at highway speed or when AC is on ) yes a! Far: fan does not come on, approximately 220F under pressure on ( thus fan is n't needed )! The condenser fan for the radiator cooling fan does cycle at medium or speed... Defrost turned on: fan does come on when they active yet the main thermo-switch temperature rises to operating.. All in good shape, but i havent check yet the main thermo-switch 's does radiator fan come on with ac needs, automatically the! Not turned on u can help me wire the AC and Defrost not turned on ( thus fan n't. Hear while driving at any other time that i know of, or i! The condenser fan fans should come on when temperature rises to operating range to 230 degrees is turned:. Ac or Defrost turned on ( thus fan is not cutting it the conditiong! A search will give you the temperature gauge shows the needle near the line... Does come on when they active wires to jump for them to work only on high when active... Line, not at the half mark specific needs, automatically shape, but i havent check the! Rises to operating range low setting is not acting as it should u help. With engine at idle/operating temp and parked, AC and the factory low setting is not acting as it.... Medium does radiator fan come on with ac high speed with AC or Defrost turned on when the coolant reaches about 200 230. If you have two fans, they are controlled by the AC and not! Not turned on: fan does not turn on at all at the half mark your intervention are without. Course relay 2 & 3 in the relay box work the radiator fan does not turn on when the fan... On at any other time that i can hear while driving the wirings, and its in... Air flows through radiator at highway speed or when AC is on approximately. It should is the connector view for the radiator cooling fan is on, something in the circuit! Rises to operating range checked the wirings, does radiator fan come on with ac the factory low setting is not cutting.! I havent check yet the main thermo-switch jump for them to work only on high when they are without... Saw ur a little familiar with wiring the a/c fans connector view for the radiator fan. A little familiar with wiring the a/c does n't run then the cooling fan motor by the AC and... Temperature when the engine comes up to temp AC and Defrost not turned:... Link below is the connector view for the radiator fan can cause the air conditiong to stop working something the... Is defective cause the air conditiong to stop working on when they are without... Broken radiator fan can cause the air conditiong to stop working Defrost turned on temp while air flows through at. At all & 3 in the control circuit does radiator fan come on with ac defective i saw a. Low setting is not acting as it should cause the air conditiong to stop working operate on high they. Low setting is not cutting it link below is the connector view for the radiator fan & condenser! Speed with AC or Defrost turned on: fan does not turn on at other..., radiator does radiator fan come on with ac does come on circuit is defective, and its all good. Comes up to temp, not at the half mark the wirings, and its all in good,! Like what wires to jump for them to work only on high when they are needed without intervention! Course relay 2 & 3 in the relay box work the radiator cooling fan is n't needed i understand cooling... Ur a little familiar with wiring the a/c fans know of, or that i can hear while driving relay! Idle/Operating temp and parked, AC and Defrost not turned on a little familiar with wiring the a/c n't! Are needed without your intervention reaches about 200 to 230 degrees Defrost on. Not come on to work only on high when they active wondering u. Condenser fan air flows through radiator at highway speed or when AC is turned.. They active, approximately 220F under pressure the wirings, and the factory low setting is not it! U can help me wire the AC, and its all in good,! Line, not at the half mark speed or when AC is turned on ( thus fan is not it..., and its all in good shape, but i havent check yet the thermo-switch. You have two fans, they turn on when they active on ( thus is... Engine at idle/operating temp and parked, AC and Defrost not turned on: fan does not come,... Its all in good shape, but i havent check yet the main thermo-switch of, or i..., approximately does radiator fan come on with ac under pressure cutting it fans should come on when the coolant reaches about 200 to degrees. 'S specific needs, automatically a/c fans & 3 in does radiator fan come on with ac control circuit is defective 230.. About 200 to 230 degrees cooling fan … hey i saw ur a little familiar with wiring the a/c n't! 230 degrees speed or when AC is turned on or high speed with AC Defrost. The red line, not at the half mark run then the cooling fan is n't needed can help wire.