Mercury Mountaineer Problem Report
Mercury Mountaineer Rough idle when cold due to upper intake manifold gasket leak
High idle (approx. 1700 rpms)and check engine light came on. Had it diagnosed, shop said it was due to leak at manifold gasket. Idle increased to compensate for the leak. Repair estimate - $400 I was told in my case it is not a bad leak and can be delayed until it gets worse. I will wait. - Visitor
The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the C...
97 has a whole top center and 99 is blank between the 8 input orifices.
Could it be from a vacuum leak or one of the sensors? Help
The composite (plastic) intake manifold may crack near the thermostat housing and cause a coola...
My mountaineer will not idle in cold weather and once warm it is still rough. There is not a c...