Fix it or take it to a mechanic.
Possible causes are:
1. Faulty HEGO sensor.
2. Vacuum leak.
3. Faulty or contaminated MAF sensor.
4. Low fuel pressure.
5. Exhaust system leak.
6. Excessively unequal injector flow at any given duty cycle.
7. Cracked valve spring.
8. Oddball stuff such as restricted intake manifold or slightly leaking head gasket.
It is important to have a diagram when repairing a heating system in a car. A Mercury Mountaineer heating system diagram can be found in its maintenance manual that can be found at auto part stores.
I believe it has ( 2 ) because the ignition system is EDIS ( Electronic Distributorless Ignition System ) on the 2002 Mercury Mountaineer V8
There are two ports on the air conditioning compressor on the Mercury Mountaineer. The refrigerant to recharge the system is to be connected to the lower port.
Supplemental Restraint System - air bags
A 2002 Mercury Mountaineer has the Electronic Distributorless Ignition System ( EDIS ) With the 4.0 L , V6 engine there is ( 1 ) coil pack With the 4.6 L , V8 engine there is ( 2 ) coil packs
The power steering might whine on a 1998 Mercury Mountaineer because the pump or reservoir is low on fluid. Check the reservoir and add fluid to eliminate the whine. You may have a leak in the system.
No , ABS is the anti-lock brake system
A malfunction in the air bag system has been detected
Could be anything from an ABS system fuse , sensor etc . malfunction
There is no dipstick, the transmission is a completely sealed system. You have to take to dealer for service.
The easiest way to reset the antitheft system in your 1998 Mercury is to remove the antitheft system fuse. Keep the fuse out for 10 seconds and then replace it to its original position.
A 2004 Mercury Mountaineer does not have the Coil On Plug ( C.O.P. ) ignition system with ( 8 ) individual coils . It has the Electronic Distributorless Ignition System ( EDIS ) with ( 2 coil packs ) and ( 8 ) spark plug wires