EGR passage mey become clogged on Infiniti G20

Problem Description and Possible Solution
The EGR passageways may become clogged.
Problem Data
RepairPal Verified
Average mileage: 187,588 (120,352–255,000)
4 model years affected: 1999, 2000, 2001, 2002
10 people reported this problem
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Diagnostic test said o2 sensor needed replaced. Couldn't find the right one. But the car runs rough! Transmission slips when accelerator is floored. It will, however, ease up to speed. Slowly. The car was like this when I bought it.
ECU throws error codes for insufficient EGR flow.
My car idles really bad..sometimes it doesn't want to start and the transmission feels like it is slipping. It won't do over like 50 - 60 on the highway (and that's only on a good day) it usually only wants yo go like 30 down hill! And sometimes it won't even make it up a hill