excamry 
2000 Toyota Camry Sedan LE 4dr Sedan
EGR valve
 At 88,000 miles the computer analyzed a faulty EGR valve. Replaced the valve ($170.00). The engine check comes back on. I took the the vacuum connected little valve right next to it out and examined it. The top comes off and it contains a little 1" diameter filter inside. Replaced the filter and check engine light was history. Sorry I spent $179 when  a little foam filter from the lawnmower did the trick. Otherwise the carry has been a gem never a repair in ten years. This is for doityourselfers to save some money