logan.d122
Member
- Joined
- July 18, 2012
- Messages
- 13
- Reaction score
- 2
- City, State
- MI
- Year, Model & Trim Level
- 2007 Mercury Mountaineer
Hi everyone. Over the past few months I noticed a very small amount off coolant on my driveway when the vehicle cools down after a long drive. It was never a concerning amount and due to the vehicles age I was not too concerned. I monitored the reservoir and it never reached a low level. However, the other day I drove to the store, around town, and back home and after the car sat for a few hours in roughly 45 degree weather I noticed a large amount of coolant leaking under the vehicle, and the reservoir was empty. I rented a pressure test kit from Advance Auto and noticed that when pressurized to 20 psi (like the radiator cap says) coolant begins dripping at a steady pace from behind the compressor pully. The engine is dry on top and none of the hoses seem to be leaking. I removed the alternator to get a better look at the water pump, and the weep hole was clogged, but dry. The leak is in the center and drips on the frame from behind the large compressor pully.
Could this be a bad water pump seal/gasket? I cannot get a good look at the lower side of the water pump without removing the fan (which is next on my list). I have checked the intake manifold and it doesn't seem to be cracked or leaking. I don't want to replace the water pump if that is not the issue. Hoping someone has had a similar issue before and can point me in the right direction. Vehicle was purchased with 112,000 miles and now has 166,000. I have not had the water pump replaced and from the looks of it, it seems to be the original. I am skilled enough to replace the pump myself, just want to see anyone can shed some light on the problem before proceeding with a "fix".
Could this be a bad water pump seal/gasket? I cannot get a good look at the lower side of the water pump without removing the fan (which is next on my list). I have checked the intake manifold and it doesn't seem to be cracked or leaking. I don't want to replace the water pump if that is not the issue. Hoping someone has had a similar issue before and can point me in the right direction. Vehicle was purchased with 112,000 miles and now has 166,000. I have not had the water pump replaced and from the looks of it, it seems to be the original. I am skilled enough to replace the pump myself, just want to see anyone can shed some light on the problem before proceeding with a "fix".