If you ae getting a code 33 that means your egr is bad an dneeds replacing or it's clogged up or thepassageway is clogged. It may be the reason for the popping in exaust as well. It cold also be a vacuum leak to the egr valve with a split or broken vacuum line. Tis can also be an iginition problem i'm sending a vacuum diagram for yuo to check against yours.
Friday, April 6th, 2012 AT 8:45 PM