2006 Mounty 4.0L Rough idle | Ford Explorer Forums - Serious Explorations

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2006 Mounty 4.0L Rough idle

kingpickle

New Member
Joined
April 4, 2015
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Year, Model & Trim Level
2006 Mercury Mountaineer
Getting P0174, P0300, P0301, P0302, P0303.
Live data showing:

STFT B1 -4 idle / -10 load
LTFT B1 -14 idle / -15 load
STFT B2 7 idle / 23 load
LTFT B2 25 idle / 23 load

The numbers are all over the place but I averaged it out. Load was around 2k rpm. Any idea whats going on here? I checked for leaks by spraying some carb cleaner around the manifold and can't find anything. Any suggestions. Thanks
 






My mechanic for the past 20 years retired last year and sold his shop :( . Took it to a local shop and the mechanic changed the following: spark plugs, wires, fuel filter, air filter, oil, oil filter, 4 oxygen sensors, cleaned fuel injectors, smoke test for leaks. The same codes still came up. Paid the $800 bill and took the car with me since I cant afford to go any further atm. Dialed my old retired mechanic's cell phone number, he retired to another state but suggested I have the egr valve looked at. Should I sell a kidney and continue this venture or just cut my losses? Help :D
 






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