Quote:
Originally posted by mark cummins
Check the EGR pipe frpm the Exhaust manifold to the Intake
Clean it out and or Update the pipe
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All of the above is good advice, but I think Mark is making a great suggestion that is usually overlooked.
Your engine is notorious for building up carbon (from oily pcv vapors) at the end of this "hot inlet pipe" where it enters the intake manifold. Many techs "ream out" this pipe at 60,000 mile intervals to avoid EGR codes when it completely plugs up.
The only long-term fix is to replace the pipe. The pipe was updated so that it is a little longer. Apparently this extra length is needed so that it sticks inside the intake manifold just a little bit more, preventing carbon build-up.
The pipe is about $100 or so, and is well worth the trouble.