I need a recommendation for a competent mechanic in the NoVA/Arlington area.  My car's acting up again, popping up weird codes when the check engine light comes on.  It's a 1999 Dodge Intrepid 2.7L V-6.  I know sinking money into this thing isn't the best idea, but since I can't afford anything else on my current income and this car is completely paid for, its the only thing I can do.  

Thanks in advance