Had tune up done, now reves and ideles high.

2008 VOLKSWAGEN PASSAT
96,000 MILES • 2.0L • 4 CYL • TURBO • 2WD • AUTOMATIC
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FTLOOS
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  • 1 POST
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?
Nov 11, 2015 at 8:20 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
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
Nov 18, 2015 at 10:49 AM
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