mhhtcc263
New Member
- Joined
- June 2, 2018
- Messages
- 5
- Reaction score
- 0
- City, State
- Norfolk,VA
- Year, Model & Trim Level
- 2007 Explorer Eddie B
Hello, I have a 2007 EB, 4.0L, 175K miles.
I am experiencing coolant loss and when in idle condition not enough heat coming out of the vents in both front and rear climate control systems. I have symptoms that can be either water pump and/or heater core (both front and rear).
Symptoms I have (may or may not be related):
1. In normal idle, there is heat coming out but not enough until I rev up the engine over 2000rpm. At that revolution and higher the heat is where it is supposed to be for front and rear climate systems. I also took a laser reading at heater hose and temperature of the hoses rise as the engine revs up (up to 180 deg F). Temperature was quick to rise but it lowers slower. The temperature difference between the supply and return hoses was about 5 degrees.
2. About once every 2 weeks I hear my fan kick in higher speed. This is my clue that my coolant level is getting lower. So I add about 3/4 of a gallon of water. I also notice there is air in the system based on the large amounts of bubbles so there is air getting into the system. Adding more coolant or water does not effect the amount of heat coming from the vents. Also, the fan stops its high speed when I go into higher speeds.
3. I do not see my temperature gauge go above midpoint.
4. When I rev up the engine, I hear a slight misfire from the engine. (I have to be outside of the vehicle to hear it. I cannot hear the misfire when I'm inside.)
5. I do not see any white smoke or and fluids coming from the exhaust tail pipe.
6. I do not see any coolant coming out from the water pump. Then again, I cannot see the weep hole to see if any coolant is coming out.
7. I do not see and coolant leakage anywhere include the rear climate control hoses
8. I did a pressure test to 20 psi and it slowly lowered to held at 16.5 psi.
It seems to me the common denominator of all these symptoms point to water pump.
Is there a test I can do to prove or illuminate the water pump? It never has been replaced nor the heater cores
I am experiencing coolant loss and when in idle condition not enough heat coming out of the vents in both front and rear climate control systems. I have symptoms that can be either water pump and/or heater core (both front and rear).
Symptoms I have (may or may not be related):
1. In normal idle, there is heat coming out but not enough until I rev up the engine over 2000rpm. At that revolution and higher the heat is where it is supposed to be for front and rear climate systems. I also took a laser reading at heater hose and temperature of the hoses rise as the engine revs up (up to 180 deg F). Temperature was quick to rise but it lowers slower. The temperature difference between the supply and return hoses was about 5 degrees.
2. About once every 2 weeks I hear my fan kick in higher speed. This is my clue that my coolant level is getting lower. So I add about 3/4 of a gallon of water. I also notice there is air in the system based on the large amounts of bubbles so there is air getting into the system. Adding more coolant or water does not effect the amount of heat coming from the vents. Also, the fan stops its high speed when I go into higher speeds.
3. I do not see my temperature gauge go above midpoint.
4. When I rev up the engine, I hear a slight misfire from the engine. (I have to be outside of the vehicle to hear it. I cannot hear the misfire when I'm inside.)
5. I do not see any white smoke or and fluids coming from the exhaust tail pipe.
6. I do not see any coolant coming out from the water pump. Then again, I cannot see the weep hole to see if any coolant is coming out.
7. I do not see and coolant leakage anywhere include the rear climate control hoses
8. I did a pressure test to 20 psi and it slowly lowered to held at 16.5 psi.
It seems to me the common denominator of all these symptoms point to water pump.
Is there a test I can do to prove or illuminate the water pump? It never has been replaced nor the heater cores
