Need some help.
08-08-2011, 01:41 AM
#1
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Need some help.
I have an 89 cherokee, it was recently overheating I flushed the radiator and now its running rough and its kicking out black smoke when I give it gas. I changed the air filter and checked the oil. The oil was a little over the full mark. Any ideas?
Oh and it no longer overheats.
Oh and it no longer overheats.
08-08-2011, 01:56 AM
#2
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Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Well at least it doesn't overheat lol. Black smoke is caused by an overly rich condition. Sounds unrelated to the flush. Test the map and the mat sensors. Go to www.lunghd.com and click on site tech then go to sensor diagnostics
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