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Help Needed to complete B20A Swap---Erratic Idle!---

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Help Needed to complete B20A Swap---Erratic Idle!---

Old 08-14-2010, 07:21 PM
  #1  
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Default Help Needed to complete B20A Swap---Erratic Idle!---

So I while back I started a JDM B20A Swap into a 1989 Si. I got as far as swapping the motor but I was not able to finish everything because I left to college. Well now I'm back home for the summer and I'm picking up where I left off.

The problem I'm having is extremely erratic idling.

I'll give you a break down of what the car has right now

Break down:

So, I have a 1989 Honda Prelude SI 4WS, I have swapped into it a JDM B20A. It has:
- JDM B20A motor
- USDM Transmission
- USDM Intake Manifold (ITM)
- USDM Exhaust manifold (EM) [with all o2 sensors, which connect to the (EM)]
- USDM Speedometer cable since I am running the USDM transmission

Problem:

I have started the car successfully and it drives fine, however when it comes to idling in the driveway or at a red light it is horrible!!! The idle is very erratic.

My Car:

YouTube - Erratic Idling



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Old 08-15-2010, 07:03 AM
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describe the erraticness. Does it wander from 1000-1500 rpm or is it almost dying?

Did you clean the IAC valve?
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Old 08-15-2010, 06:57 PM
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There is a video of it. click on the youtube link.
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Old 04-15-2011, 02:47 AM
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vacume lines
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