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#1
06-07-2004, 03:43 AM
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Engine Surges at Neutral
My son's 97 Civic revs up and down while at neutral. It does not happen all time. I have asked around and some suggest it could be due to a bad sensor. More specifically the TPS, throttle position sensor. Some suggest cleaning the fuel intake valve. So I bought a fuel additive for cleaning the intake valve and poured it into the gas tank. My son says the engine surges has stopped. Why will a dirty fuel intake valve cause engine surges?
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#2
06-07-2004, 09:14 AM
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Re: Engine Surges at Neutral
it wasnt get a consistent flow of gas at lower psi i guess.
__________________
1993 honda civic si -turbo charged b18c1 dynoed: 316whp at 11lbs
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#3
06-07-2004, 07:06 PM
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Re: Engine Surges at Neutral
mine did that when my o2 sensor shorted out.
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#4
06-12-2004, 12:59 PM
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Re: Engine Surges at Neutral
ive got the same problem.. ive replaced the map sensor and the problem continues... i was burning oil for a while, and im not sure if my o2 sensor is toast or not, would that cause it to surge? or do i need to replace a fuel filter or something like that?
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97 red honda civic lx sedan b16a w/ Type R head,full headwork Port and polished, ported intake manifold, 310cc RC injectors, ITR cams, Skunk2 adjstable camegears, VAFCII, modified apexi ws II exhaust 
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#5
06-12-2004, 01:24 PM
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Re: Engine Surges at Neutral
02 cound cause a rough idle
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1993 honda civic si -turbo charged b18c1 dynoed: 316whp at 11lbs
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#6
06-12-2004, 02:01 PM
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I dont understand how all of you always blame the O2 sensor... How come when I unplug the damn thing nothing but a check engine light comes on? Ive even driven without one for about 10 min! Of course it sounded like SHIT because theres nothing but a hole in the header but still, everyone blames the 02 sensor. Not having one just causes the engine to run really rich. But a surging idle? rough idle? bogging? hesitation?
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 1997 Integra GSR and 1992 Civic LX
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#7
06-12-2004, 09:50 PM
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Ive also noticed that once my engine is hot and ive been driving around for a while it doesnt surge anymore but for the 1st 10 minutes of driving it will surge and try to die at stoplights or when i press the clutch in
__________________
97 red honda civic lx sedan b16a w/ Type R head,full headwork Port and polished, ported intake manifold, 310cc RC injectors, ITR cams, Skunk2 adjstable camegears, VAFCII, modified apexi ws II exhaust
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