Question about 2001 Chevrolet Malibu

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Need to check a cooling fan relay wasnt sure how to do so

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U need a schematic to the relay and a multimeter, ur best bet go to a junk yard and take one out, should cost 2- dollars.

Posted on Jun 28, 2009

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2006 Chevy Trailblazer low beam headlamps will not work. Here's a list of what I have done. Changed both low beam headlamp bulbs Swapped cooling fan relay and HDM relay -headlamps worked but cooling fan...


Hi Ryan, check the fuse to the low beam, if your not getting power to the relay it will never work, the fact that you have 3 new relays they can't all be duff

Aug 30, 2014 | Cars & Trucks

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How do you check engine cooling fan relay


thumb.jpghere is your cooling system electrical wiring diagram.
use a digital volt ohm meter to check for power at relays and be sure to check fan operation (turn car on and fans and poke with a stick if fan starts operating and then shuts off it is drawing to much power and needs to be replaced. if blades will not turn fan is locked up and needs to be replaced. do not run engine for too long without proper functionong cooling system you could cause sever engine damage i.e. headgasket or cracked block. also be sure the radiator has plenty of coolant and is functioning normally hope this helps

Aug 02, 2014 | 2006 Dodge Stratus

1 Answer

Fans are not cutting on


your fan comes on when your car reaches required temp but if you turn the ac on it will turn the fan on also but if your fan don't work at normal temp check cooling fan relay or fan motor

Sep 24, 2012 | 1997 Chevrolet Malibu

1 Answer

2004 grand marquis fan quit working..replaced fan but still wont work


is this the blower motor fan for you heating and A/C or the cooling fan cooling fans have a relay blower fans are fused but controlled from switches inside as well as fuses

Aug 27, 2012 | 2004 Mercury Grand Marquis

1 Answer

Overheating


If the temp goes up at idle and is fine when your driving at highway speeds than the most likley problem is the cooling fans are not working.

the first thing you can do is check to make sure both of the cooling fan fuses are good. you can also check continuity of the cooling fans with an ohm meter.

The cooling fans are turned on by the low and high speed cooling fan relays. you can try swapping the relays.

If the fans still do not come on than you will need a scan tool to diagnose further since the PCM is what controls the fan relays.

Feb 23, 2012 | 1999 Buick Century

1 Answer

Why does the temp gadge go up when the car is sitting still????


If the temp goes up at idle and is fine when your driving at highway speeds than the most likley problem is the cooling fans are not working.

the first thing you can do is check to make sure both of the cooling fan fuses are good. you can also check continuity of the cooling fans with an ohm meter.

The cooling fans are turned on by the low and high speed cooling fan relays. you can try swapping the relays.

If the fans still do not come on than you will need a scan tool to diagnose further since the PCM is what controls the fan relays.

Feb 23, 2012 | 1999 Buick Century

1 Answer

My cadi 1988 is running ruff and quit running feels like over heating but no leaks, just smells


REPLACE THERMOSTAT AND RADIATOR PRESSURE CAP.MAKE SURE COOLANT NOT LOW.IF ALL IS GOOD CHECK FOR LEAKING WATER PUMP WEEP HOLE IF LEAKING REPLACE WATER PUMP.MAKE SURE COOLING FANS RUNNING.IF ENGINE RUNNING HOT WHILE SITTING LONG TRAFFIC LINE AND COOLANT NOT RUNNING.CHECK COOLANT FAN RELAYS AND FUSE.IF ALL IS GOOD HOT WIRE MAKE SURE COOLING FAN MOTOR GOOD IF COOLING FAN DONT RUN WHEN HOT WIRED FAN MOTOR BAD.IF FAN MOTOR OKAY AND FUSE RELAYS GOOD YOU HAVE FAULTY COOLING FAN WIRING.YOU COULD HAVE BAD ENGINE COOLANT SENSOR OR FAULT IN ECM CODE SCAN TO CHECK THEM BOTH.CHECK ENGINE OIL.LOOK LIKE MILK SHAKE YOU HAVE LEAKING HEAD GASKET.IF OIL LOOKS OKAY.YOUR ENGINE BLOCK, RADIATOR AND HEATER CORE NEED FLUSHING.

Sep 20, 2011 | 1988 Cadillac Sedan DeVille

1 Answer

MY JEEP HAS BEEN OVERHEATING,I HAVE CHANGED THE THERMOSTAT AND THE WATER PUMP AND THE LOWER HOSE AND DIDNT TAKE CARE OF THE PROBLEM


There are a few things you need to check:
First, make sure the cooling system is free of air. This can be done by loosening the bleeder screw while the engine warms up and closing it when only coolant spills out.
Also, look for any leaks from the radiator. Keep in mind it could be leaking internally.
Make sure the cooling fans are working. Check the fuses and switch the cooling/radiator fan relay with a nearby relay like the A/C compressor relay or another relay you know to be working. If the cooling fans aren't engaging, there may be a wiring issue or they may need to be replaced.

Sep 07, 2010 | 2002 Jeep Liberty

1 Answer

Code p1652 on a 1996 pontiac grand prix does anyone know what it means the book for computer codes is incomplete


Trouble code P1652 means: Cooling Fan 2 Relay Control Circuit Malfunction

I would start by checking power supply to the cooling fans,making sure the coolant system is full,& using a scn tool to verify the proper operation of the cooling fan system.Here is some info to help you.

The Powertrain Control Module (PCM) controls the operation of the cooling fans. This is accomplished by providing a ground path for the cooling fan relay coils within the PCM. The relay contacts will close and complete the circuit between the fusible link at the battery junction block and the fan motors. Whenever there is a fan ON request both fans will be running.

Power for the fan motors is supplied through a fusible link at the battery junction block. Battery positive voltage is applied to the cooling fan relay contacts and coils. The cooling fan relays are energized when current flows through the relay coils to ground at the PCM. The cooling fan relay #1 control circuit is used for low speed cooling fan operation. The cooling fan relay #1 control circuit and the cooling fan relay #2 and #3 control circuit are both grounded for high speed fan operation. The cooling fan relay control circuits are monitored by the PCM. Before using the Electric Cooling Fans diagnostic tables be sure to perform the Powertrain On-Board Diagnostic System Check. If diagnostic trouble codes P1651 or P1652 are present, use the appropriate DTC diagnostic tables prior to performing Electric Cooling Fans diagnostics.

Important:
When certain Diagnostic Trouble Codes (DTCs) are present, the PCM may command the cooling fans to run all the time. It is important to perform the Powertrain On-Board Diagnostic System check prior to diagnosing the engine cooling fans.The PCM will complete the ground path for cooling fan relay #1 under any of the following conditions:
- When engine coolant temperature exceeds 105°C (221°F)
- When A/C is requested and ambient temperature is greater than 10°C (50°F)
- When A/C refrigerant pressure is greater than 190 psi (2 volts)

For high speed cooling fans operation, the PCM will delay control of the cooling fan #2 and #3 relays for 6 seconds. The 6 second delay ensures that the cooling fan electrical load will not exceed the capacity of the system. The PCM will complete the ground paths for cooling fan relays #1, #2, and #3 under any of the following conditions:
- When engine coolant temperature exceeds 113°C (235°F)
- When A/C refrigerant pressure is greater than 275 psi (2.9 volts)

If a problem that involves the low speed cooling fan relay control circuit (cooling fan relay #1 control) exists, DTC P1651 should set. If the problem affects the high speed cooling fan relay control circuit (cooling fan relay #2 and #3 control), DTC P1652 should set. A problem with the ECT sensor should set DTC P0117, P0118, P1114, or P1115. Any of these DTCs will affect cooling fan operation and should be diagnosed before using the Electric Cooling Fan Diagnosis table. The Electric Cooling Fan Diagnosis table should be used to diagnose the PCM controlled cooling fans only if no DTC is set.
Hope this help to solve your poblem (remember rated and comment this help).

Mar 21, 2010 | 1996 Pontiac Grand Prix

1 Answer

99 chev malibu,cooling fans dont come on


make sure it is full of coolant, next check for a bad fan relay, to see if fans are ok! run a wire from positve post on battery to positive on fan motor, ground other side if need be. if fans do not work they are bad, if they do work, check relay to fan and coolant tempurature sensor if needed.

Mar 19, 2010 | 1999 Chevrolet Malibu

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