S2000 Under The Hood S2000 Technical and Mechanical discussions.

shuttering problem

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Old Jul 15, 2014 | 09:49 PM
  #11  
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Im just trying to figure out what it really is, Im figuring you've had the same problem as me, considering your opinion Vtec9....
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Old Jul 15, 2014 | 10:29 PM
  #12  
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This also happens every once in a while with me. I've came across a thread about it and it seems somewhat common.
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Old Jul 16, 2014 | 02:44 AM
  #13  
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There's a lot of things that can affect idle, MAP sensor problems, clogged IAC valve, partly clogged injectors, partly clogged fuel filter, fouled primary O2 sensor, bad coils, fouled spark plugs, bad PCV valve, bad sensors. There's probably thirty things I missed.
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Old Jul 16, 2014 | 07:01 AM
  #14  
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Fixed my issue. Turns out the previous owner had the primary and secondary o2 sensors swapped. Therefore it was giving a P0133 code to the OBD reader and running the engine a bit rich
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Old Jul 18, 2014 | 02:48 PM
  #15  
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Seems like nobody has had the same exact problem as me, I'll start with the map sensor and the iacv. I'll keep you guys posted. Thanks for the info guys.
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Old Jul 21, 2014 | 08:59 AM
  #16  
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Ok guys, I'm doing the tb cleaning and iacv cleaning to see if I can solve my problem. Ran into some problems with the tb. I've seen a thread in hear with a pic of a tb but it doesn't look like mine, im guessing the tb on the other thread is from an ap2. So do i clean mine the same way?

This is what mine looks like at the moment shuttering problem-vbhwojl.jpg
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Old Jul 21, 2014 | 09:09 AM
  #17  
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Your pic is mirrored so it looks strange to me

Anyway, the MAP sensor air channel is the little cut out that snakes a long the throttle cable side then disappears into a hole. It looks like there may be some deposits blocking the inlet from inside the throttle body. Clean it out with carb cleaner or isopropyl alcohol on a microfiber rag or a q-tip. Unscrew the map sensor too and clean around where it sits.

Deposits in the throttle body don't really affect much so you don't really even need to clean inside the TB too much, just the air channel.

Your gasket also stuck on there pretty good. If you were replacing it, I'd say scrape off the old gasket with a plastic utensil, but if not, leave it there.
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Old Jul 21, 2014 | 12:15 PM
  #18  
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Thanks for the help vtec9, although doing this didn't solve my problem, it did however make my car run a bit smoother. I really think my issue has nothing to do with the engine/head. I believe it has to do with the flywheel or something under the engine considering the noise it makes. It makes kinda like a clunking noise, similar to the noise it makes when it's about to stall, and in reality it only does it when the engine is in fact about to stall but I know it can't be that. I'll keep you guys posted if I resolve the issue. Thanks again for the help.
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