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Had tune up done, now reves and ideles high.

Tiny
FTLOOS
  • MEMBER
  • 2008 VOLKSWAGEN PASSAT
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 96,000 MILES
After tune up my car idles, revs, and shifts at higher RPM. On freeway at 65 on cruise used to be 1800-2000. Now at 2500 - 3000. Shifting from 3rd to 4th to 5th spikes at 3500 - 4000. Loosing appx 3 mpg on gas mileage. Changed O2 sensors, didn't help. What would be the top things to check to get the RPM back down?
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Wednesday, November 11th, 2015 AT 8:20 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,904 POSTS
Hey Ftloos,

It sounds like you have a vaccum leak, can you check round the intake manifold air intake tube and the mass air flow connection, please let me know what you find.

Best, Ken
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Wednesday, November 18th, 2015 AT 10:49 AM

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