Thread: What could it be..help

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2012-03-04 22:56:05

92sr20b13

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What could it be..help

Car doesn't idle too smooth and running pretty rich. Also after revving it rpm's kinda drop like it wants to die sometimes. That my O2 sensor that's bad??

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1992 Sentra SE-R

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2012-03-05 00:22:15

rustbucket Online/offline status of rustbucket is unknown

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Mine has been doing the same thing. Every one tells me its a vacuum leak which makes since but I can't find that s.

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2012-03-05 02:05:29

sr20aphex

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IACV? maybe

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91 Aztec Red SER
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2012-03-05 04:29:10

92sr20b13

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It just may be a vacuum leak, I can hear kinda a hissing noise of a leak of some sort coming from behind the intake manifold

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1992 Sentra SE-R

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2012-03-05 04:38:29

morgans432 Online/offline status of morgans432 is unknown

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well thats a good place to start looking at.

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2012-03-05 05:04:25

ashtonsser Online/offline status of ashtonsser is unknown

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more than likely vac leak especially if you hear a hissing sound. Pretty good indication. Check all the hoses that run underneith for the aux air valve, IAC valve and of course all vac lines.

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1992 Nissan Sentra SE-R - Fully Built SR20VE, BWS400SX Billet 67mm and much more
JMS Racing tuned to 716whp, 423wtq at 29psi
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2012-03-05 05:11:43

mynissanb13 Online/offline status of mynissanb13 is unknown

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im having this problem aswell and ive had it for awhile at cold start and breaks up a bit but after a bit it stops..three years later still doing it

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2012-03-08 11:32:40

Storm88000 Online/offline status of Storm88000 is unknown

Oh well....

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Check your intake hosing for leaks. Especially at the MAF

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