Question about 1995 Pontiac Grand Am

2 Answers

95 grand am radiator fan only runs with AC on

Have changed sensor for the coolant fan, can disconnect the sensor and fan continues to run, can also turn on ac and fan will run just fine.
Coolant fan will not run when temperature is high, car overheats.

Posted by on

  • 3 more comments 
  • Allison Hulbert May 11, 2010

    The fan is not suppose to run till 235 degrees

  • Pol Cervan May 28, 2013

    I have the same problem with my Peugeot 207. fan not working when ac is off. temperature rises when on idling .losing coolant as well.please help

  • Anonymous Mar 13, 2014

    radiator cooling fans come on late

  • Anonymous Mar 18, 2014

    AC condenser fan runs with ignition turned off

  • Anonymous Mar 30, 2014

    My Toyota Sienna overheats when the AC is on and driven for about 45 minutes When I stop I find out the Radiator is empty of coolant

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,596 Answers

Cooling Fan Temp Sensor is the First thing You Check (with what you have described) Cooling Fan Should ALways come On When The A/C is turned On as A/C Adds A Load to Engine, If Temp Sensor is Faulty it Will Not Give GROUND Signal to ECM >For COOLING FAN >RELAY to Give ground and turn ON The Fan.
There ARE 2 temp Sensors that Serve Different Purposes 1 is for Dash READING GAGE & Or TEMP LIGHT the Other is For ECM or Fan Relay (SAME Thing) you Said>""can disconnect the sensor and fan continues to run" < This Leads me to think you Changed the Wrong One. Not Questioning your Skills Just Here to Help.
TEMP SENSOR FOR 3.1L V6 is Located upper RH rear of engine compartment, near exhaust system. Temp SENSOR for 2.3L Engine is Located in LH rear of engine compartment.
I Hope this Helps Lead you to a NON-OVERHEATING Pontiac.
Good Luck and Have A Great Evening. rejakwilson

Posted on Feb 04, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 141 Answers

Relay, on engine fuse box if car overheats, check if thermostat i shut

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Renault Espace Mk III radiator fans are not switching off, even if you disconect the temperature sensor. both relays are okay. Some say it's the aircon pressure switch. Anyone knows where is the...


turning of the ac switch will indicate if it is an ac problem for the fans.
some cars have the radiator fans running for up to 10 minutes after shut down . Run the fault codes to see if there is a faulty temperature sensor. how it works is this
the sensor is connected to the ecm and has power passing through. it When the sensor sensor a preset coolant temperature the power to the ECM is altered and so the ECM energizes the relays for the fans. If the fans are running continuously after shut down then the ECM still has the relays energized as it is still reading the requirement from the sensor.

Feb 07, 2015 | Renault Cars & Trucks

2 Answers

I have a Bmw C318 and when I am stuck in traffic jam my radiator fan is not running enough to cool the engine and i changed the thermostat and the radiator fan new but remained the same.And when i start...


Check the temp. sensor with a digital voltmeter.never use a test light on a comuterized car.should read same voltage on both terminals when fan energized. Highly suspect coolant temp. sensor @ radiator.

Nov 08, 2013 | BMW Cars & Trucks

1 Answer

When turning off engine , both fans , radiator and ac fans continue to run causing my battery to drain


change the temp sensor on coolant system I am sure thets the cause.hope it helps

May 19, 2011 | 1999 Volkswagen Jetta

1 Answer

I have a 2001 Dodge Durango. The radiator fan continues to run after turning off the vehicle. I have disconnected the battery to keep it from draining the battery overnight. Is this a thermostat problem...


There is a coolant temperature sensor that signals the fan to come on at a certain temperature, the coolant temperature sensor is faulty, change it and you will have resolved the issue.

Apr 22, 2011 | 2001 Dodge Durango

1 Answer

95 Ford Contour, engine cooling fan won't come on but if I unplug the coolant temp sensor, it runs continually. Any suggestions?


you have just answered your own question...when you take off the connector to the sensor,the fan runs.....change the sensor.....

Jan 11, 2011 | 1995 Ford Contour

1 Answer

I have a 95 Gran AM GT with 3.1 auto. The motor will run until it gets overheated and boils over, but the fan will not start.I have totally flushed the system,pulled and inspected the water pump, changed...


Fan operates when coolant temp reaches 226 deg.F and shuts off at 219eg.F
fan is controlled by the PCM infuts from Eng. coolent temp. sensor & Intake air temp. sensor
the yellow wire is the 5V reference and the black wire the is the PCM ground sensor
make sure your not using teflon tape on the threads of the temp sensor.
it sounds like the PCM wont turn it on. check the harness for continuity between temp. sensor and PCM harness
clear connecter - pin 17 black, pin 31 yellow

Sep 12, 2010 | Pontiac Grand Am Cars & Trucks

2 Answers

Teperature gauge on my 2004 grand prix gt rises above halfway mark but lowers as soon as car accelerates.


Check your coolant level in the radiator first. Problem could also be a weak waterpump

Aug 12, 2010 | 2004 Pontiac Grand Prix

2 Answers

2000 jeep grand charokee laredo over-heating


have you changed the thermostat? is your fan kicking on? if your fan is not kicking on you need a temperature sensor.

Aug 17, 2009 | 2000 Jeep Grand Cherokee

1 Answer

1990 jeep cherokee 6cyl inline- electric radiator fan inop.


the aux fan only works when the ac is on, and has come to a predetermined temp(?) i found this out while going up a long grade in the back country without the ac on and later found out the radiator was half plugged!

Nov 18, 2008 | 1990 Jeep Cherokee Limited

Not finding what you are looking for?
1995 Pontiac Grand Am Logo

1,587 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

61168 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...