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91 CRX ZC Idling issues.

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Old 07-27-2013, 05:03 PM
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Default 91 CRX ZC Idling issues.

Okay, back with even more!

Okay, so randomly when I start the car up the idle does one of three things
  1. Starts fine - Idle roughly 700 (normal)
  2. Starts fine - Idles around 1100
  3. Starts fine - Idle fluctuates between 1500 and 2000

I did try searching but a bit stuck on what might actually be doing this since there is no set pattern. No CEL and light does work.
There seems to be a lot of things that can cause this, but why so random with when it happens? After it warms up it is fine so I'm thinking I need to clean the IACV and/or the FITV.

Thanks for the help, and sorry if more searching could have answered this, but I did try but still confused.

Also slightly unrelated question I have a set of sparks I never got to use in my Sol what should be the gap for the DOHC ZC motor?
Old 07-27-2013, 10:29 PM
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Default Re: 91 CRX ZC Idling issues.

the gap is probably .040 if they're copper plugs... but that seems normal. the fast idle should idle high when cold maybe going out or a map sen? the computer has to sense that the sensor is bad multiple times before it throws a code
Old 07-27-2013, 10:38 PM
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Default Re: 91 CRX ZC Idling issues.

I'll have to see if it keeps doing it. Only had it a week now. I might check the IACV while I put a new brake MC in.

I did find that the gap is .044 (.038 -.044 really) and it is supposedly the same for the (now dead) sol. Heh, I wonder if they'll even fit. (Now I just need a spark socket ha)
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