You can have different vacuum from year to year, nothing major though. I would try replacing your vacuum hoses, they are cheap.
If they are clogged with oil, no vacuum. Worn out, they can collapse.

Your egr vavle runs through the intake plenum and exits right in front of the throttle body. If that tube is clogged, it is just like having a clogged egr.

Last edited by trythis; 12/04/06 07:46 AM.
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