Question about 2000 Pontiac Grand Am GT

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2000 Grand am , 3.4 engine, problems with the fan.fan does not work. it will work only if i unplug the temperature sensor,put new Relay, new thermostat and still fan does not work.

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  • Pontiac Master
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TEMPERATURE SENSOR BAD.

Posted on Apr 30, 2010

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Oct 15, 2015 | 2000 Pontiac Grand Prix SE

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Where is the engine fan relay located on 2000 lincoln ls v6


There is no relay on the cooling fan circuit.
If the cooling fan is not operating, check fuse #105 (20 AMP), in the underhood junction box, right front of engine compartment.
If fuse is good then test to make sure fan is getting power.
If no power then could be bad cylinder head temperature sensor, hydraulic fan solenoid, a/c cycle switch or the PCM.
If it has power but doesn't come on then fan motor is bad.

May 28, 2014 | 2000 Lincoln LS

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2000 radiator fan test, is there any way to test the fan before o get a new one


check cooling fan fuse or fuse link.it all is good. fan relay or engine coolant temperature sensor.could have ECM FAULT it controls coolant fan relay and coolant fan.code scan for ECM FAULT YOU WILL SEE CHECK ENGINE FLASH IF PROBLEM IN THE ECM.but check cooling fan hot wire it using jumper wires to battery.if fan okay replace engine coolant temperature sensor.

Feb 20, 2013 | 1999 Volvo S80

1 Answer

Fixed radiator but fans still not working to cool engine. tested fans on battery they work, but not when put in van


Could be some problem with the engine coolant sensor or temperature sending unit, check it.

Jun 21, 2012 | 2000 Dodge Grand Caravan

1 Answer

2000 S 500 M Benz. I have a radiator fan which made lots of noice as its motor worn out , I replaced the entire fan , but now the new fan doesnt work 1.check the fan on dc and it works 2. all fuses are...


first off all put the old one back on and then run engine up too temperature to see if it works ,if that one works then you know its connection problem with the new one like a multiplug connection in the wrong place but at least you will know you have a working system ,if the old one doesnt work then you will know its a problem with a temperature sensor or a relay ,

Feb 01, 2011 | 2000 Mercedes-Benz S-Class

1 Answer

2000 Grand am. fan does not work, it will work only if i unplug the temperature sensor. put new thermostat, new relay, and new temperature sensor. and still doing the same thing. now what can i do.


okay, if it turns on with coolant temp sensor unplugged, then this tells me that the fan is good and also relay is good, you replace thermostant, and the sensor, you covered all those bases,now we go into coolant flowing,this tells me the coolant is not flowing inside the motor,two thing can cause this, one being the waterpump, the impeller may have broken or rusted, and the next would be exhaust entering the cooling system restricting the flow and making it overheat,this is gasket from a headgasket problem. the next thing i would do is to have a block test done to see if exhaust is entering the cooling system, good luck.

Apr 30, 2010 | 2000 Pontiac Grand Am GT

2 Answers

I have replaced the radiator on my 2000 Grand Cherokee and now the on board computer reads" open circuit"in the place where the temperature should be displayed. please assist.


Either your temperature sensor is unplugged or it has failed and is giving you that reading. (most likely cause...if not, start checking wiring from the sender and make sure any electric cooling fans are plugged in as well.

Feb 04, 2010 | 2000 Jeep Grand Cherokee

2 Answers

Coolant leaking replace every three days coolant fan wont stop ru


This link has a diagram showing the location of the relay: http://autorepair.about.com/library/faqs/bl581g.htm

The Pulse Width Modulated (PWM) radiator cooling fan relay is located behind the front bumper fascia below the right head lamp.

Sep 08, 2009 | 2000 Jeep Grand Cherokee

1 Answer

I replaced my radiator cooling fan motors both of them on my Dodge Grand Caravan and i replaced the relay and fuse and coolant temparature sensor and my fans still won't work.


check for battery power at pin 4 of rad fan relay connector..ground at pin 1..jump pins 3 and 4..fans should work..if not,check harness about 3-4 inches away from relay connector..have seen these corrode..if fans work,the engine controller may not be grounding relay..any codes in engine controller?engine light on?

May 16, 2009 | 2000 Dodge Caravan

3 Answers

Van chevrolet venture 2000


Fifteen minutes! you have bigger problems than only the fans the fans are controlled by a thermo switch that is heated by the coolant, If you have no coolant the sensor cannot activate But fifteen minutes seems like you may have a headgasket problem and steam cannot heat the coolant sensor.OperationNotesThe electric cooling fan operates when the engine cooling temperature exceeds a certain value. The cooling fan on this engine is controlled by the Powertrain Control Module (PCM) . The PCM turns the cooling fan ON by grounding the coil of the cooling fan relays when certain conditions are met. When the A/C is requested, the cooling fan will also be turned ON.

Power for the cooling fan motors are supplied through Maxifuses(R). The cooling fan relays are energized when current flows from the fuses in the Underhood Accessory Wiring Junction Block, and through the relay coils to ground through the PCM. The Coolant Fan 1 Relay Control Circuit is grounded for low speed fans operation. During low speed fans operation, both fans run at a slow speed. The Coolant Fan 1 Relay Control Circuit is grounded for high speed operation. During high speed fans operation, both fans run at high speed.

IMPORTANT: When certain Diagnostic Trouble Codes (DTCs) are present, the PCM may command the cooling fans to run all the time. Perform the A Powertrain On Board Diagnostic (OBD) System Check prior to diagnosing the engine cooling fans.

For more information regarding the Charging System, refer to Charging System Description , and Charging System Circuit Description in Starting and Charging.

If a problem that involves the low speed cooling fan relay control circuit exists, DTC P0480 Cooling Fan Relay 1 Control Circuit should set. If the problem affects the high speed cooling fan relay control circuit, DTC P0481 Cooling Fan Relay 2 Control Circuit should set. A problem with the ECT sensor should set DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage, DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage, DTC P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage, DTC P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage. Any of these DTCs will affect cooling fan operation and should be diagnosed before using the Electric Cooling Fan Diagnosis.

For more information regarding the Cooling System refer to Engine Cooling Fan Description - Electric, and Cooling System Description in Cooling System.


Here is the electrical schematic and how it all is suppose to work,
If you need any further help please contact me Thank you,Randy If you find this information helpful please give me a good rating

www.aceautomotive1.com

Aug 16, 2008 | 2000 Chevrolet Venture

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