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engine problem?

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Old Mar 20, 2006 | 02:19 AM
  #1  
danman04x's Avatar
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Default engine problem?

i have a question and want to know if anyone else has experienced this before. If i am cruising, when i put it in nuetral to begin to stop i notice my rpms ranging from 700 to 1200, the needle is bouncing around.
has anyone else seen this happen?
what can be the problem?
please help
Thanks
Old Mar 20, 2006 | 02:23 AM
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i noticed that too but dont really know what causes it but i dont really wory about it
Old Mar 20, 2006 | 02:26 AM
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there's s no problem that happens to all manuel tC's.
Old Mar 20, 2006 | 02:29 AM
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Yup, I noticed that too,.. No idea why it happens either though
Old Mar 20, 2006 | 02:36 AM
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when i got my TRD muffler installed it started doing that. i think it's just normal. same thing when i had my civic and the apex'i N1 exhaust.
Old Mar 20, 2006 | 02:49 AM
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mines did it when it was all bone stock
Old Mar 20, 2006 | 02:50 AM
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yup usually happens to me when i let off the gas and am in neutral coasting. rpms drop to ~700 then up again, down, up whatever.
Old Mar 20, 2006 | 12:50 PM
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it's probably just the idle air control valve kicking in after the rpms drop. Almost all manual transmission cars do this. It's not a problem unless it bounces like that at idle.
Old Mar 20, 2006 | 12:54 PM
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dan, its str8, dont worry bout it
mine does it on occassion
Old Mar 20, 2006 | 12:56 PM
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I believe it's the computer learning the air/fuel ratios.. my car does it alot more after I reset the ECU.
Old Mar 20, 2006 | 01:14 PM
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thanks for all the help, i was going to take it in but now i wont.
Old Mar 20, 2006 | 01:45 PM
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i use BG fuel additive, helps
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