I've heard that rough idle, bad mpg, and pour engine performance can come from the egr system that needs cleaning and a bad vacuum switching valve. Is it hard to change the vacuum switching valve and clean the egr system myself or would i have to get a mechanic to do it. How much are replacement parts?
any info appreciated
Is it hard to cleanVacuum switching valve??????????
Vehicle make, model and year.
Give us a hint?
The vacuum control valve can be easily tested for proper operation and leaks - the EGR valve is 14 years old - you can try cleaning it, but you'd probably be better off simply replacing it if it's not operating properly.
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