Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
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I can't tell you exactly what part of the EGR that pertains to, nor am I sure how precise the codes are. That said, this is how I'd proceed.
1. Disconnect the vacuum line from the EGR valve and fit a longer piece of hose on it. Suck on it and be sure the diaphram holds vacuum (if you have to keep sucking on it that is bad). If it does not hold vacuum, replace the valve.
2. Remove the little plastic check valve (one end won't be connected, this is normal). Note which end is plugged in. Inspect it for cracks/damage and suck on it. It should allow air flow in one direction only. If it is suspect, replace it.
3. If it checks out thus far, then remove the EGR valve and tube. Clean both thoroughly (the tube can be particularly troublesome to clean, pipe cleaners can help) and check the diaphram (again) and make sure the mechanism moves smoothly (visual check) when you apply vacuum. If not, replace it.
4. Inspect the gasket for damage, if any is present, replace it.
5. Replace/clean/reinstall as necessary.
Reset codes and drive car, see if the issue is resolved.
Take care and enjoy the ride,
Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; its inherent virtue is the equal sharing of misery. (Winston Churchill)
Last edited by Check Codes; 01-09-2009 at 08:18 PM.