sfiforlife
New Member
Hello,
I own a 2004 Jeep Liberty V6 with 180K miles.
I recently changed the coolant (complete flush) and used the proper coolant from Chrysler (orange HOAT). I made sure that all the air was out of the system by opening the nut on the upper hose until the bubbles went away.
Now when I drive the car on the highway, the coolant boils and splashes out of the reservoir (Not from the cap but from the release valve at the top of the reservoir and white smoke comes out of the hood as the coolant drips on the hot engine. The most surprising fact though is that the Temp on the thermostat in "NORMAL" it goes up to halfway as the car warms up and stays there while the coolant is boiling. I am sure that the cap is sealed properly.
One very important thing I noticed is that the cooling fan does not come on when the heater is turned on. When the A/C is on it turns on for 3 seconds and turns off for 5 then repeats over and over again. I get both cold air and hot air as advertised.
I checked fuses and they were all good. But I went ahead and swapped them with other compatible fuses (40s) and still no fix.
I swapped Hi FAN and Low FAN relays (There are 4 identical/swappable relays and I tried all configurations) with no fix.
I OPENED the Hi fan relay to see what is was doing. It was making contact for the 3 seconds the fan would operate and break contact for 5 seconds as the fan would stop and then repeat. So I held the contact manually with a screw driver and the fan would continue to run no problem.
I tried doing this with the Low FAN relay but the contact was always intact as if the Low fan should be on at all times but it is not. The socket in which the Low fan relay resides makes any relay stay in contact (energized) with out the fan running at all and I cant break the contact while its energized.....
My question is:
1. Is the Low FAN relay supposed to start off with it in contact (energized) ? If so, is the fan supposed to be ON and in low?
2. Why is my High FAN relay making intermittent contact every few seconds when the A/C is turned on?
3. Why does NO fan come on when the heater is on?
4. With all this information provided so far, what do you think might be the problem?
P.S The cooling fan is electric with no belts attached.
Thank you very much.
I own a 2004 Jeep Liberty V6 with 180K miles.
I recently changed the coolant (complete flush) and used the proper coolant from Chrysler (orange HOAT). I made sure that all the air was out of the system by opening the nut on the upper hose until the bubbles went away.
Now when I drive the car on the highway, the coolant boils and splashes out of the reservoir (Not from the cap but from the release valve at the top of the reservoir and white smoke comes out of the hood as the coolant drips on the hot engine. The most surprising fact though is that the Temp on the thermostat in "NORMAL" it goes up to halfway as the car warms up and stays there while the coolant is boiling. I am sure that the cap is sealed properly.
One very important thing I noticed is that the cooling fan does not come on when the heater is turned on. When the A/C is on it turns on for 3 seconds and turns off for 5 then repeats over and over again. I get both cold air and hot air as advertised.
I checked fuses and they were all good. But I went ahead and swapped them with other compatible fuses (40s) and still no fix.
I swapped Hi FAN and Low FAN relays (There are 4 identical/swappable relays and I tried all configurations) with no fix.
I OPENED the Hi fan relay to see what is was doing. It was making contact for the 3 seconds the fan would operate and break contact for 5 seconds as the fan would stop and then repeat. So I held the contact manually with a screw driver and the fan would continue to run no problem.
I tried doing this with the Low FAN relay but the contact was always intact as if the Low fan should be on at all times but it is not. The socket in which the Low fan relay resides makes any relay stay in contact (energized) with out the fan running at all and I cant break the contact while its energized.....
My question is:
1. Is the Low FAN relay supposed to start off with it in contact (energized) ? If so, is the fan supposed to be ON and in low?
2. Why is my High FAN relay making intermittent contact every few seconds when the A/C is turned on?
3. Why does NO fan come on when the heater is on?
4. With all this information provided so far, what do you think might be the problem?
P.S The cooling fan is electric with no belts attached.
Thank you very much.