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WTF surging idle?

Discussion in 'General Tech and Maintenance' started by projectxspeed, Apr 12, 2005.

  1. projectxspeed

    projectxspeed Senior Member

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    Ok so my 1995 Honda Civic Ex 5spd radiator fell to pieces. Luckly it was parked, so I had it towed home. I replaced the thermastat, radiator, hoses, and clamps. I filled it will about 3/4 of a gallon of coolant, and started the car. It ran fine for about a minute, and then the idle started to surge. It revs up to 2200 then falls to 1500 and repeats the process. Ok I lost, why would replacing the radiator cause a surging idle?

    Can anyone give me a direction to look in?
     
  2. reckedracing

    reckedracing TTIWWOP VIP

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    yea, its low on fluid... thats what they do
     
  3. MXDesa

    MXDesa Senior Member

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    The IAC or idle air control motor uses coolant to set its idle RPM and ur are going to make sure u let the car run and bleed the air from the coolant system in order get it to idle the correct way.
     
  4. projectxspeed

    projectxspeed Senior Member

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    K stupid question time, How do I bleed the air from the coolant system.
     
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