87 bmw 325e engine rev up and down

1987 BMW 325
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COWBOYSAMO
  • MEMBER
  • 1 POST
when out of gear (in neutral), engine revs up and down continuously. A couple of times, I restarted the engine and it went into full throttle. After 5 seconds, then goes back to up and down revs.
can anyone help me diagnose this problem ????
greatly appreciated for the help !!!
Jan 29, 2011 at 8:31 PM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
The idle control valve/idle control unit are in need of replacement. It is a common problem with the Eta cars. It is about $700+ dollars for the cost of both of those units new, used parts are available at Autobahn dismantling (619)444-2290 talk to john or sean.
Jan 29, 2011 at 8:39 PM
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