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Rough idle when its cold?

 
Old 02-09-2019, 08:10 AM
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Default Rough idle when its cold?

Does anyone else have rough idle when it's cold? Say its 29 degrees out and you start the car and go for a drive rightaway and the engine will struggle a bit when you come to a stop. (Rpms will go down below 1000 and almost stall) but once the engine is warm and I've been driving a bit rpms will go down to 800-1000 at stops.

That is happening to me, I did clean the IACV but not take it fully apart to clean it I just took the unit off and sprayed some carb cleaning and used Q tips. What else could it be?
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Old 02-09-2019, 12:32 PM
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You have a tendency to ignore solid, meaningful advice on this forum...

If you just sprayed your IACV, that's not the 100% correct way of cleaning it, so you cannot rule out the IACV yet.

Follow the instructions to [carefully] take it apart -- pay attention to the Billman250 instructions and see the photos:
https://www.s2ki.com/forums/s2000-un.../#post23350475
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Old 02-10-2019, 12:33 AM
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I wish I had the special socket needed to fully assemble the IACV for a deep clean can I find one at a hardware store or would I need to order online?
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Old 02-10-2019, 12:24 PM
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Originally Posted by windhund116 View Post
DeWalt Security bit set has the T20 bit.

https://www.amazon.com/DEWALT-DWAX20...curity+bit+set
I don't really wanna buy an entire set for one socket. Do they sell them individually?
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Old 02-10-2019, 01:36 PM
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Probably not, you'll have to buy a set, but you can get them at any hardware store, or general auto parts store for ~$10, and then you'll have them. Old cars with worn O2 sensors benefit tremendously with a new one where idle smoothness is concerned. O2 sensors last ~100k miles.
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