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Black smoke.

GREEN PEA

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Joined
July 29, 2010
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City, State
WILMIIGTON DELAWARE
Year, Model & Trim Level
94 XLT
Explorer started losing power running rough black smoke. Wont idle at times. Replaced maf sensor both upstream o2 sensors. Replaced o2 sensors because they were not switching. Only time it runs half way decent is when maf is unplugged. Tryed second maf still same problem. Only code left is dpfe/egr. Possible it is causing my intrmitten problem?
 






Welcome to this forum! I've moved your thread into the stock 91-94 section. Do you see a check engine light? If so, then there has to be a code stored. What were the code numbers that you found up until now?
 






Only code at present is 335EGR/DPFE. Talked to a lot of techs and heard lots of problems with PCM. When idle injector MS is double-digits, black smoke rolls out of tailpipe. When unplug mass airflow sensor will run somewhat better. Injector MS at 6.
 












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