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My 2000 Chevy Venture fans are not turning on. Neither the a/c or the radiator fan. However you can manually turn the fans. So there not seized up. Help!

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This may bye an issue with the coolant temp sensor.Try unplugging the sensor and the fans should come.The sensor is located towards the front of the engine on the drivers side by the upper radiator hose.

Posted on Jul 20, 2010

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Posted on Jan 02, 2017

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1 Answer

2000 Nissan Maxima Overheating


Hi. Your radiator fan motor may be seized. Should ingage between 95-100 degrees when you parked on idle after achieving full working temp. If it doesn't, check fuse first and than relay responsible for cooling fan( you can find cavity in your owner manual. Let me know. The reason you car is ok while driving is the air going thru your radiator. When you stoped or parked for longer time with no speed there is nothing to cool your radiator. Fix it asap or eventually will cause engine over hit and seize.

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The heater doesn't work very well on my 2000 Chevy Venture van. I'm wondering if I should try replacing the thermostat. Or, it is all computer controlled now.


If heat gauge reads normal, stays in the middle, then you do not need to mes up with the thermostat. I own a 2000 Chevy Venture and changing the thermostat was not fan.
It may be the Temperature Control Module, which you can buy for $45 and replace without problem, or may be an partially obstructed heating core. The GM Dex-Cool antifreeze, the read one, has additives, but if you do not flush the radiator every 2 or 3 years, can result in partially clogged heater core. I have done on my car twice till now, and replaced with green Prestone, on my own risk. Hope this will help. If need more information let me know. A have the Haynes manual for Chevy Venture 2000, and I am a car dealer.

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Coolant fan temp sensor location on a 2003 chevy venture


located in thermostat housing or in intake nearby (where top hose connects from radiator to engine)

Jul 13, 2009 | 1997 Chevrolet Venture

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2000 Intrepid with no AC and overheats. Neither radiator fan comes on when AC is turned on. Possible fan relay?


Very possible - also check that the fans actually turn by hand (ignition off of course) as sometimes the fan motors seize up and blow a fuse. If you have access to a scan tool and the fans are not seized, you can actuate the relays manuallly to see what works and what doesn't.

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2001 Chevy Venture Cooling Fans always running on high


either the temp sensor is bad but, it sounds like the fan relay is stuck.
replace the relay its in the fuse box.

Mar 23, 2009 | 2000 Chevrolet Venture

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2000 Chevy Venture Van has been overheating. The temp will spike all the way up and then quickly drop again. Back and forth like that.


Almost sounds like the same symptons as my van. Turns out the guage was not the problem. The van was in fact running hot because the electric radiator fans were not kicking in when the engine was hot. I replaced the relay switches for the fans. There are two of these in the fuse panel under the hood. There has been no problem with overheating since

Jan 19, 2009 | 2000 Chevrolet Venture

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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