Question about 1990 Honda Civic

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Idle studder when my civic is idled in around 1000 rpm it runs good but when it gets to 500 rpm it shimmies hard and no clue whats up with it

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  • fat_guy_in_f
    fat_guy_in_f Mar 26, 2009

    1990 honda civic Lx doesnt die just shimmys real harsh

  • josh1111 May 11, 2010

    what year make and model, does it die? or just shinny

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Priority Action Part Type Cause 1 Inspect M.A.P. Sensor Faulty M.A.P. Sensor. 2 Inspect EGR Valve Improperly Functioning or Faulty EGR Valve. 3 Inspect Fuel Injector Dirty or Worn Fuel Injectors. 4 Inspect Idle Air Control Valve Damaged, Loose, or Faulty Idle Air Control Valve. 5 Inspect Idle Speed Actuator Damaged, Loose, or Faulty Idle Speed Actuator. 6 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor. 7 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 8 Inspect PCV Valve Plugged or Damaged PCV Valve. 9 Inspect Carburetor Worn, Faulty or Damaged Carburetor. 10 Inspect Valve Burned, Worn, or Sticking Exhaust Valves. 12 Inspect TimingSet Slipped TimingChain or Worn TimingGear(s). 13 Inspect Fuel Pump Faulty Fuel Pump. 14 Inspect Camshaft Camshaft Lobes Worn. 16 Inspect Point Set Burned, Worn or Incorrectly Set Ignition Points.here is all the possibilities in order, you ll have to cross eahc one out. some of them may not relate to your vehicle(ex carburator)

Posted on Apr 01, 2009

  • josh1111 Apr 03, 2009

    not the motor mount could be egr valve let me know if you need more help

  • josh1111 Apr 07, 2009

    have you gotten codes for this problem?

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A shimmy if you stomp on the gas and then let off quickly do you hear a large clunk if so prob a motor mount if the shimmy is a low idle engine loping or rpm up and down at low idle its prob the egr valve hope this helps

Posted on Mar 25, 2009

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