Why are the fans not running in my Pontiac?
your issue is with the temp switch not the temp sensor. the sensor will only operate the fans when it fails to avoid a possible overheating issue ,where as the switch is the fans main controller via ecm. the switch should be on the radiator itself or near the water pump. Hi, thanks for the answer.
Why is my Pontiac Grand Am GT not cooling?
It leaks coolant into the cylinders and causes inefficiency in the cooling system, leading to low coolant and overheating. You can replace this gasket with a metal one, the repair is a little involved but I managed with a Haynes manual. Good luck! My 2000 Pontiac Grand Am GT (6 cy/3.4L) has been having cooling issues.
How does the cooling system work on a Pontiac?
The PCM sends the signal to the BCM, which turns the fans on. Or you can buy a separate temperature fan relay system with a temp probe and bypass the system. It will work as normal cooling when needed only. Its the connecter that you unplug from the temp sensor.
Why are my coolant fans not running when AC is turned on?
Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.
Why is my HVAC not working on my Pontiac Grand Am?
Pontiac Grand Am ,HVAC, Heater Fan will not turn on. – YouTube Pontiac Grand Am ,HVAC, Heater Fan will not turn on. If playback doesn’t begin shortly, try restarting your device.
Why does my car have a radiator fan?
You probably already know the purpose of the radiator and the cooling system in your car. When you are driving fast, the wind is passing through the radiator to cool the coolant down without issues, but when you are driving slow, there is no wind pushed through the radiator. This is why we use a radiator fan.
What happens if your coolant level is low?
If your coolant level is low, there is a chance that you will get air in the system, and the coolant temperature sensor will not read the coolant temperature correctly. If the coolant level is low, you need to refill the coolant to optimum levels. Failing to do so could risk your engine becoming overheated and seized.
When did the Pontiac Grand Prix come out?
In this article, we consider the seventh-generation Pontiac Grand Prix, produced from 2004 to 2008. Here you will find fuse box diagrams of Pontiac Grand Prix 2004, 2005, 2006, 2007 and 2008, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.
your issue is with the temp switch not the temp sensor. the sensor will only operate the fans when it fails to avoid a possible overheating issue ,where as the switch is the fans main controller via ecm. the switch should be on the radiator itself or near the water pump. Hi, thanks for the answer.
It leaks coolant into the cylinders and causes inefficiency in the cooling system, leading to low coolant and overheating. You can replace this gasket with a metal one, the repair is a little involved but I managed with a Haynes manual. Good luck! My 2000 Pontiac Grand Am GT (6 cy/3.4L) has been having cooling issues.
The PCM sends the signal to the BCM, which turns the fans on. Or you can buy a separate temperature fan relay system with a temp probe and bypass the system. It will work as normal cooling when needed only. Its the connecter that you unplug from the temp sensor.
Why are the cooling fans on my car not running?
The problem persists; the engine will reach 200, the thermostat opens (determined by watching the temp. gauge), but the fans do not start. If I disconnect the (new!) temperature sensor, both fans start.
Why is my Pontiac Grand Am GT overheating?
Good luck! My 2000 Pontiac Grand Am GT (6 cy/3.4L) has been having cooling issues. I started by replacing the thermostat and performing a flush & fill on the radiator. This didn’t seem to resolve the issue — the engine still overheats when at a stop.
What should I do if my radiator fan is not working?
A blown fuse is no big deal, and changing one does not cost a lot of money. If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan. The fan itself often uses a big fuse of around 50A, while there might also be a separate small fuse to the fan control module.
How much does it cost to replace a radiator fan?
A mechanic would initially check all the other things related to the radiator fan to make a proper analysis. A radiator fan is not very expensive and can cost around $200 – $400. It’s the fan motor that makes the radiator expensive. Your mechanic would charge you $120 to $200 depending on the make and model of your car and the nature of the work.
A blown fuse is no big deal, and changing one does not cost a lot of money. If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan. The fan itself often uses a big fuse of around 50A, while there might also be a separate small fuse to the fan control module.
A mechanic would initially check all the other things related to the radiator fan to make a proper analysis. A radiator fan is not very expensive and can cost around $200 – $400. It’s the fan motor that makes the radiator expensive. Your mechanic would charge you $120 to $200 depending on the make and model of your car and the nature of the work.
Good luck! My 2000 Pontiac Grand Am GT (6 cy/3.4L) has been having cooling issues. I started by replacing the thermostat and performing a flush & fill on the radiator. This didn’t seem to resolve the issue — the engine still overheats when at a stop.
What to do if your car fan is not running?
Or you can buy a separate temperature fan relay system with a temp probe and bypass the system. It will work as normal cooling when needed only. Its the connecter that you unplug from the temp sensor. That connection is usually bad and can be fixed by directly putting the wires together or cleaning each connector.
Or you can buy a separate temperature fan relay system with a temp probe and bypass the system. It will work as normal cooling when needed only. Its the connecter that you unplug from the temp sensor. That connection is usually bad and can be fixed by directly putting the wires together or cleaning each connector.
What to do if your car cooling fans are not running?
Hook your temp sender up to a meter and drop it in some boiling water. This should tell you if it’s working or not. Personally, I’d just disconnect it until you get the issue figured out — running the fans continuously isn’t going to hurt anything, it’ll just be loud.
Why does my Pontiac Grand Am keep overheating?
I gotta 1999 pontiac grand am se 3.4 it ran ok when I first got it then seripeteen belt broke overheated a lil had problems since.got belt fixed then had problems with the fans not wrking also so hooked them up direct an found out outta 2 fans one wrked.
You probably already know the purpose of the radiator and the cooling system in your car. When you are driving fast, the wind is passing through the radiator to cool the coolant down without issues, but when you are driving slow, there is no wind pushed through the radiator. This is why we use a radiator fan.
The problem persists; the engine will reach 200, the thermostat opens (determined by watching the temp. gauge), but the fans do not start. If I disconnect the (new!) temperature sensor, both fans start.
Where is the relay on a radiator fan?
The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.
What kind of starter motor does a Pontiac have?
The starter motor is a very high current and powerful direct drive electric motor that rotates and turns the engine via the ring gear (flex plate) when the solenoid operates. The starter includes the starter drive gear that is equipped with an over-running clutch.
Why is my fan not working on my car?
There is a problem within this circuit causing the fan to fail to operate allowing the engine to overheat while sitting still or driving at a slow speed. When the PCM attempts to activate the fan and senses the command and the result do not match, the code is set.
What causes a faulty fan control relay 1?
Potential Causes. The causes for this DTC may include: Faulty fan control relay 1. Fan control relay harness is open or shorted. Circuit electrical connections poor. Faulty cooling fan 1. Faulty coolant temperature sensor. Fan cooling fan harness is open or shorted.
Hook your temp sender up to a meter and drop it in some boiling water. This should tell you if it’s working or not. Personally, I’d just disconnect it until you get the issue figured out — running the fans continuously isn’t going to hurt anything, it’ll just be loud.
Why does my car overheat when I Turn on the fans?
There was a bigger problem with overheating with this car, even after the fans were running correctly. The stock engine comes with a plastic intake manifold gasket, which is prone to failure. It leaks coolant into the cylinders and causes inefficiency in the cooling system, leading to low coolant and overheating.
Where is the radiator fan relay on a Dodge Grand?
If the Radiator fan control module has failed you will need to replace it with a new one there is no way to repair it. The radiator fan relay is located below the left front headlamp module. The headlamp module must be removed to access the relay. Open hood, disconnect and isolate the battery negative cable.
Why does my floor fan not turn on?
If you turn on your fan and the fan motor hums even though the fan blades won’t move, the cause may be that the gears are stuck. Once you’ve cleaned the fan as outlined in the previous step, try unscrewing the motor housing so you can see the electric motor parts.
Why does my PCM not turn on the fans?
You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans. This should happen as the high side of the system approaches 214 psi. If it exceeds this amount of pressure and the system doesn’t turn on, one of the sensors in the system that the PCM uses to know when to turn the system on and off has failed.
Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.
There was a bigger problem with overheating with this car, even after the fans were running correctly. The stock engine comes with a plastic intake manifold gasket, which is prone to failure. It leaks coolant into the cylinders and causes inefficiency in the cooling system, leading to low coolant and overheating.
What to do if your cooling fan won’t turn on?
Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor.
Why do the fans not come on when the a / C is turned on?
The fans do also come on when the a/c is turned on but they will not come on when the check gauges light comes on (cause it is too hot) I usually try to shut the car down at 235-240 if the fans don’t come on but this last time the ignition switch stuck in run and I couldn’t get it turned off quick enough.
How can I tell if my radiator fan is working?
When a radiator fan works it usually makes a whirring sound that is easily noticeable. However, the radiator fan does not always start spinning on ignition. The ECU signals the radiator fan to work at the precise time. So, do not worry if the fan doesn’t immediately start working. Visually check the fan if you don’t hear its noise. 1. Broken Fuse