OK, lets figure out what's happening here. You are seeing "oil" in the radiator and coolant. Chances are it is not engine oil. The inly way engine oil can get into a radiator would be if a head gasket was blown. Even then, oil at those locations is not under as much pressure as the coolant is, so when a head gasket blows, what usually happens id that the coolant ends up in the motor oil and oil pan. Verify this by looking at the dipstick to see if it is extremely full. The oil could look like choclate milk. Also, open the oil filler cap and look for signs of chocolate brown goop. I'm betting you won't find that. This is good, but also bad. What you probably have in you coolant is transmission fluid. The transmission oil is circulated through a cooler located inside the radiator. If this cracks or breaks the transmission oil can leak into the coolant. However, at different times the transmission oil and the coolant are at odd with one another pressure-wise. This means that if you have transmission oil in the coolant, you probably have coolant in the transmission oil. This is very very bad, You will need to have the transmission serviced and possible overhauled to repair the damage. You will also need to flush the trans oil from the coolant system. This will require you to replace the radiator, ALL HOSES as well. Coolant hoses do not play well with transmission fluid . The inside of the hose sort of melts and gets real soft and gooey. Changing the hoses and radiator and flushing the motor should work once the transmissionhas been serviced.
SOURCE: 2002 mercury mountaineer 4.0 starter relay location
The power distribution box is
located in the engine compartment.
The power distribution box contains
high-current fuses that protect your
vehicle’s main electrical systems
from overloads.
The starter relay is in position #56 of that box.
SOURCE: In 97 mercury mountaineer, how to turn off "check engine" light
Go to the local parts store, have them check the codes (they will do this for free usually). It will tell you what sensor needs to be checked/replaced. Once the part is replaced, it will clear on its own. They can also reset the code, but it will come back if the trouble persists.
SOURCE: removing radiator 2000 mercury mountaineer
PERHAPS THERE IS A BRACKET ON THE BOTTOM THAT ANCHORS IT TO THE FRONT SUPPORT. I HAVE REMOVED A FEW THAT HAVE ADDITIONAL REINFORCED BRACKETS ON THE BOTTOM TO HELP THEM STAY PUT. I HOPE THIS HELPS YOU. THANKS FOR USING FIX-YA AND FOR AN HONEST RATING. IF YOU NEED ADDITIONAL ASSISTANCE PLEASE LET ME KNOW. BEST OF LUCK
SOURCE: Changed oil and message center still says oil
Ford Explorer, Mercury Mountaineer, 2002-06
To reset CHANGE OIL SOON/OIL CHANGE REQUIRED message on the Message Center, press the SET UP control to access the System Check mode. Press and release the RESET button to display “OIL LIFE % HOLD RESET NEW” is displayed. Press and hold the RESET button for 2 seconds until “IF NEW OIL HOLD RESET” is displayed. Press and hold RESET button until “OIL LIFE SET TO 100%” is displayed.
Ford Five Hundred, Freestyle, Mercury Montego 2005-06 Tap the ODO/TRIP button to toggle the display between the odometer and trip odometer. Tap on the ODOiTRIP button again to toggle the display between the trip odometer and OIL LIFE % display. Press and hold the ODO/IRIP button for 2 seconds or more to display OIL LIFE 100%. Your oil life in now reset.
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