S2000 Under The Hood S2000 Technical and Mechanical discussions.

Low rpm below 1k on start up

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Old Apr 26, 2010 | 10:20 PM
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Default Low rpm below 1k on start up

What up folks so not sure if anyone else has experienced this issue when i turn on my car after its up to temp the rpm's always drop below 1k for just a split second and it sounds like my car is gonna turn off it does not do it on cold start just when the car is up to temp...hmmmm does this happen to anyone else?
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Old Apr 27, 2010 | 01:19 AM
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i have the same issue when its done warming up and after a short or long drive turn it off and back on it will drop below 1k then sputter and jump back up i;ve done my research and im thinking its the map sensor.
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Old Apr 27, 2010 | 02:22 AM
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i had this happened to me a few days ago. Try cleaning your air filter if you haven't. Do mapwhack and relearn the ecu for the idle. It fixed my problem. Alot of members said this is a common problems that will re-occur.
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Old Apr 27, 2010 | 09:48 PM
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ya it drives me crazy any suggestions on how to fix it maybe i know its not the air filter its new i just installed my v2 intake like not even a month ago my friend has an ap1 as well and he says his kidna does it after he drives it kinda hard or steps on the gas but he has yet to see how mine does so im not sure if its the same thing...any suggestions on how to eliminate the issue even if it does come back id like to get rid of it...i wonder if it would be hard to do it our selves? how do i mapwhack and relearn teh ecu?
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Old Apr 27, 2010 | 11:13 PM
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to mapwack, just give the map sensor a few wack with a screw driver. To relearn the ecu, pull the fuse under the dashboard. It's the 2 on down from the 1st row of fuses. Pull it for like 30-60 seconds. Then put it back in and start the car and let it run for 10-15 minutes till the cooling fan comes on. Make sure all the stuff in the car is turned off, AC, radio etc etc
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Old Apr 29, 2010 | 05:29 PM
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thanks bro appreciate the help ill try and do it on my next day off and let you yall know how it works out for me!!
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Old Apr 29, 2010 | 05:37 PM
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Originally Posted by S2Kmonkee,Apr 27 2010, 11:13 PM
to mapwack, just give the map sensor a few wack with a screw driver. To relearn the ecu, pull the fuse under the dashboard. It's the 2 on down from the 1st row of fuses. Pull it for like 30-60 seconds. Then put it back in and start the car and let it run for 10-15 minutes till the cooling fan comes on. Make sure all the stuff in the car is turned off, AC, radio etc etc
DO NOT "whack" the map sensor with a screw driver. It a sensitive sensor and this could damage it and then guess what you'll be in the market for? There are more appropriate ways to do this. Use the search button this issue has been covered before.
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Old Apr 30, 2010 | 03:21 PM
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there is a service bulletin on the map ,take it to honda its free,they just put a wierd zip tie on the map but it works ,dont smash ur map with anything lol
.also dissconect battery and let it sit five min or so and then do an idle learn might take care of it .
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Old Apr 30, 2010 | 06:01 PM
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Originally Posted by s2klariat,Apr 29 2010, 05:37 PM
DO NOT "whack" the map sensor with a screw driver. It a sensitive sensor and this could damage it and then guess what you'll be in the market for? There are more appropriate ways to do this. Use the search button this issue has been covered before.
even in the DIY, it said give the map sensor a couple of firm taps.
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Old May 2, 2010 | 11:46 AM
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stiking any elaectriacl sensor is a bad thing
,honda does not aprove and is nowhere in any service mannual or tsb,i would know lol
go to hond have them look at the tsb .they will good will it for u most of the time
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