740 Turbo Revs between 2K-1K

  • Thread starter Thread starter Katrina
  • Start date Start date
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Katrina

Help! My 1989 740 Turbo sedan began revving this week. Say I'm at 2K
RPM, then I let off the gas. As soon as it hits 1K RPM, it revs back up
to 2K, then back down, then back up.
Any ideas?
 
Katrina said:
Help! My 1989 740 Turbo sedan began revving this week. Say I'm at 2K
RPM, then I let off the gas. As soon as it hits 1K RPM, it revs back up
to 2K, then back down, then back up.
Any ideas?
Click to expand...

The usual cause is a vacuum hose has come off under the hood somewhere.
 
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