Vacuum out of control

Tiny
SILO
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • V8
  • FWD
  • 197,000 MILES
Have a 2004 chevy impala 2.8l. Check engine light been on for months. Now getting what appears to be high vacuum condition which is causing several issues. Loud noise at times and some missing. Started after replacing PCV valve. Now tried 3 different PCV valves. And MAP sensor above it. Went to dealer and got all new parts. Any ideas.
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Thursday, January 13th, 2011 AT 5:42 PM

1 Reply

Tiny
LEGITIMATE007
  • EXPERT
Have you scanned it? What are the codes?
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Sunday, January 30th, 2011 AT 2:12 PM

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