Question about 2002 Mercury Mountaineer
There are two tubes from the Exhaust to a sensor called the DPFE, make sure they do not leak.
Unplug the wires to it, make sure the terminals are not corroded, clean them anyway, try it again.
Replace the DPFE sensor if no good, also replace both tubes (hoses) as they will most likely break when you take them off.
On vehicles that are no well maintained you also wany to remove the EGR valve and make sure the ports are not clogged.
Posted on Oct 23, 2013
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Posted on Jan 02, 2017
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