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hesitation at 3500 to 4000 rpm

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Old Dec 6, 2008 | 09:17 PM
  #1  
benny1979's Avatar
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From: waterbury,ct
CT hesitation at 3500 to 4000 rpm

my 1987 is hesitating at 3500 to 4000 rpm and also sometimes when i first start driving the car and it is still cold the idle goes up and down between 1000 and 2000 rpms. any help would be appreciated
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Old Dec 7, 2008 | 10:33 AM
  #2  
Aaron Cake's Avatar
Engine, Not Motor
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From: London, Ontario, Canada
3800 RPM hesitation. Check your grounds:
http://www.aaroncake.net/rx-7/grounding.htm
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Old Dec 7, 2008 | 05:45 PM
  #3  
JoeyMazda's Avatar
"81 RX-7
 
Joined: Nov 2008
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From: Easton,PA
it sounds like your car has a vaccume leak
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