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1989 Toyota Corolla idling

Tiny
POKALAY
  • MEMBER
  • 1989 TOYOTA COROLLA
  • 4 CYL
  • 2WD
  • MANUAL
  • 161,000 MILES
I have a problem with my idling, when I press break repeatedly idling going up till 1000rpm my idle is 750rpm after depressing it come back to 750rpm. What maybe the problem?
Sunday, August 1st, 2010 AT 7:20 AM

5 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Most likely the power booster is ruptured.
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Sunday, August 1st, 2010 AT 7:29 AM
Tiny
POKALAY
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  • 9 POSTS
Power booster is the same as brake booster?
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Sunday, August 1st, 2010 AT 7:37 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Yes, it has a rubber bladder inside that is most likely leaking.
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Sunday, August 1st, 2010 AT 7:41 AM
Tiny
POKALAY
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  • 9 POSTS
Is this may affect my timing and engine performance?
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Saturday, September 4th, 2010 AT 12:45 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Yes, vacuum leaks will cause a lean mixture.
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Saturday, September 4th, 2010 AT 8:03 AM

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