Question about 2004 Chevrolet Malibu

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Is that possible? Is it possible that the turn signals are operated through the cpu? I know that the heater fan can continue to run on this car with the ignition turned off.

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Body control module...yep. Alarm too.

Posted on Dec 09, 2014


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Engine fan running continuously as long as the engine is running, and the service center re unable to fix it?

I would look at the ect being bad. That's the first thing in line for that circuit after battery voltage. This is how the circuit work's the Fan's will only run if key is on.
You turn on key which sends battery voltage to system the system is on standby at this time. When the ect (engine coolant temp) sensor notice coolant has reached a set temperature it sends a signal to the relay to start fans running . When the temperature drop to a set amount it stops signal and fans turn off.
Do this take vehicle to dealer and have them replace ect . Even if it was a stuck relay there would be no power going to it

Jun 11, 2016 | Cars & Trucks

1 Answer

99 Navigator-Radio and heater continue to run with ignition in OFF position. Ignition switch has been changed.

Stuck ignition relay possible. With hot battery, turn key off and then feel each relay. If you find a hot one, change it.

Jan 15, 2015 | 1999 Lincoln Navigator

1 Answer

2003 Toyota Celica Rad fan works continuous. Heater is barely blowing warm air I feel like the two problems are connected. The Rad fan comes on as soon as you turn the switch...

Hi S, The fan is not controlled through or by the ECU. I suggest you check the connection to the fan temperature sensor. If it is disconnected the fan will operate. Refit the connector and make sure the connection is making good contact. If the fan continues to run make sure that the relay is not fused and that it is operating correctly. Regards John

Oct 25, 2012 | 2003 Toyota Celica

2 Answers

2005 impala heater fan runs constantly

read this post on what's causing blower motor to run all the time.
Blower motor wont shut off Ricks Free Auto Repair Advice

Sep 14, 2017 | 2005 Chevrolet Impala

1 Answer

I have a 95 thunderbird, the vehicle runs fine and i hadnt had any problems until one day the radiator fan wouldnt turn off, it drains the battery becasue it continues to run even after the engine is...

You could have a bad relay for the fan or the sensor that sends a signal to turn the fan on is "wanting the fan to stay on. It don't know to turn off.

Feb 22, 2011 | 1995 Ford Thunderbird

1 Answer

My 2003 ford focus during driveing thermostat runs all way hot , fan not coming on..When it happens I turn heat all way up and goes temp goes back to normal.. Is there a part called a thermostat resistor?

Hello, this sounds like a Radiator Fan Relay problem. There are several parts which make the fan work and one can certainly be a resistor. There are two Temperature switches for the water, one for the dash gauge and the other for the Radiator fan.

When the water heats up enough, the Temperature sensor (using variable resistance), sends a signal to the Relay to trip. The magnetic in the Relay will continue to work until the resistence is diminished by cooler temperatures at the sensor.

At this point, you do not know if the signal is going to the Relay or not. The Relay may be bad and doing nothing with the signal. If you have a continuity tester (Ohmmeter) you can bridge the connector on the Relay to see if the magnetic coil inside is burned out(Not making a connection).
I would just use an Ohmmeter, not Voltage because the fine wires in the Relay coil can burn up from Voltage.

There is the possibility the fan motor itself is bad, but unless you can isolate the connector and see where 12 volts is going into the fan, do not short it out. But if you are confident you can test the fan with 12 Volts go ahead.

Would like to know how you made out with this.

Oct 09, 2010 | 2005 Ford Focus

1 Answer

2001 s-10 Heater fan works intermittenly

Replace Fan or possibly thermostat module

Jul 08, 2017 | 1996 Chevrolet Blazer

1 Answer

Heater fan continues to run when heating system turned off.

Your Heater Power control module is bad I just had the same problem you can find it right behind the glove box it is mounted in the heater duct very easy to fix 2 screws and it is out and cost is about 150.00 at the dealer it is a dealer only part.

Dec 29, 2008 | 1996 Chrysler Town & Country

1 Answer

Heater Fan comes on intermittely

they are in the corner of the front by the bottom of the radiator rite below the air fillter assembaly bolted to frame two bolts size 5/16 socket it has 4 wires it is small but with the problems it sounds just like the problem i personaly had this week i would change the coolant senser first it goes for about $29.00 at autozone, just so you know the coolant senser tells your cpu to turn the fans on and the the cpu turns the relay on and then the fans turn on

Nov 29, 2008 | 1999 Dodge Caravan

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