rough idle on 1995 Mazda B2300

my 95 b2300 runs fine and starts right up but sometimes if it idles too long at a stop light it will idle real rough then die. what could it be

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3 answers 1 comment
clean out your egr valve if that does not work get you catalyst converter tested
I had the same problem...rough idle. After much reasearch and uneeded replaced parts, I found that the problem was the EGR vaccuum regulator. Replaced it and it works great now.
posable dirty fuel filter or egr
Where is the egr located?