Question about 2002 Pontiac Aztek

1 Answer

Running hot 2002 pontiac aztec....my car is still running hot. i have changed the the therostat and radiator cap, flushed radiator,ect sensor,checked relays and fuses. why does may radiator fans only come on if my heater (inside) is on and blowing full blast. if my heater fans are not on the car gets hot

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 101 Answers

Sounds like Clutch in your fan

The coolant level is right on, no hoses are leaking and the accessory belt is intact. You start the engine, let it idle and make a visual inspection. There's no sign of belt slippage.
If your car is like most, the cooling fan is mounted to its drive pulley via a clutch. Clutch fans operate at different speeds under different conditions to help reduce drain on the engine and to save fuel. When the engine is hot, the clutch fan runs nearly as fast as the engine. When the engine is cold, the fan runs much more slowly.
The fan clutch operation is regulated by a valve that is opened and closed by a thermostatic spring. The valve controls the flow of a viscous silicone fluid between chambers in the clutch assembly. When the engine is cold, the clutch is essentially disengaged, which is why the fan runs at its slowest compared to the engine's speed. As the engine warms up, the air flowing to the fan assembly becomes hotter. The hotter air causes the thermostatic spring to unwind and open the valve. Silicone fluid from the reservoir chamber flows into the main chamber, engaging the clutch, and the fan spins faster (though it's still slightly slower than the engine.

Hope this helps!

Posted on Dec 14, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Changed the radiator but the car is still running hot


Some thing too check:
Make sure coolant level is up to line and clean (not dirty, do to clogged radiator, may need to be flushed or replaced).
Make sure air flow through the out side of radiator is clear (dirt, leaves, ect..) .
Make sure fan is working properly equip t (is not running too slow). Or Manual (belt driven) fan clutch is working properly, not loose or spinning too freely?
Check for broken or cracked fan blades itself.
Check radiator cap, (no gasket tears).
Could be thermostat going bad ?
Could be coolant temperature Relay or sensor/switch (from computer) going bad?
Check radiator hose(s) (too soft, may collapse)?
In some rare cases:
Timing could be off.
Could be water pump.
Could be blown head gasket(s).
Could have cracked head(s).
ECT..............Hope this was some help???


Sep 15, 2011 | Hyundai Tiburon Cars & Trucks

1 Answer

My mazda protege is running hot and the radiator has water


Some thing too check:
Make sure coolant level is up to line and clean (not dirty, do to clogged radiator, may need to be flushed or replaced).
Make sure air flow through the out side of radiator is clear (dirt, leaves, ect..) .
Make sure fan is working properly equip t (is not running too slow). Or Manual (belt driven) fan clutch is working properly, not loose or spinning too freely?
Check for broken or cracked fan blades itself.
Check radiator cap, (no gasket tears).
Could be thermostat going bad ?
Could be coolant temperature Relay or sensor/switch (from computer) going bad?
Check radiator hose(s) (too soft, may collapse)?
In some rare cases:
Timing could be off.
Could be water pump.
Could be blown head gasket(s).
Could have cracked head(s).
ECT..............Hope this was some help???


Sep 14, 2011 | 1994 Mazda Protege

1 Answer

My 1993 Pontiac Firebird is running hot in less than 5 minutes. Changed the radiator, water pump, radiator cap and hoses still running hot. It seems like too much pressure and it's not being released....


Check the coolant temperature sensor (not the sender). Check that connection is clean and good. If you have electric radiator fans do they engage when car is hot. If nor check the fuse and the relay unit connections (under the front by the left inside fender). If you suspect the relay run a positive wire from the battery positive terminal directly to the fan. If the fan runs check the voltage to the relay and the voltage from it when triggered. If the relay is OK wiggle the wires on the coolant sender.

Sep 16, 2010 | 1993 Pontiac Firebird

1 Answer

I change thermostat radiator cap I flush the radiator and it still geting hot. I noticed something the fan don't turn on until it reaches the line in the half of the temp. Gauge and only is on for 40 secs....


CHECK COOLING FAN FUSE AND RELAY.IF BOTH ARE GOOD.HOT WIRE COOLANT FAN.IF FAN DONT RUN FAN MOTOR NEEDS REPLACING. IF FAN MOTOR RUN WHEN YOU HOT WIRE IT.YOUR FAN MOTOR ELECTRICAL WIRES DAMAGED OR HAS SHORTS OR THE COOLANT TEMPERATURE SENSOR FAULTY.

Jun 23, 2010 | 2001 Dodge Neon

2 Answers

Cooling fans on 04 aztec not working


Their is a sensor screwed into the radiator which sends a signal to the fan relay when the radiator gets hot and activates the fan. If you changed the relay then this is most likely the problem. But it may be the fan. To check remove the plug from the fan and when radiator get's hot check if power is comming through the wire's.

Sep 12, 2009 | 2005 Pontiac Aztek

1 Answer

Running hot


Radiator Fan Control Relay Switch. I bet your electric fan doesn't run?

Dec 01, 2008 | 2002 Nissan Altima

1 Answer

Running hot


replace the therostat ( most likely )

and the radiator cap

Nov 29, 2008 | 2002 Pontiac Aztek

Not finding what you are looking for?
2002 Pontiac Aztek Logo

432 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

61249 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...