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Old 12-27-2009, 11:38 AM   #1
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Default rough idling ssei

Hey guys i got a 2001 ssei,its idling rough but as soon as u hit the gas its good it dosnt seem to have a power loss but it got worse since i bought it,just at idle tho.knock sensor? tps sensor?,oxygen sensor?,i dunno it did it before the 3 in exhaust and still now after any input would be appreciated
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Old 12-27-2009, 11:41 AM   #2
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do you have an engine light on? if so take it to autozone and get us the code(*) and we can help you out a lot better
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Old 12-27-2009, 11:44 AM   #3
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no engine light is on thats why im kinda stumped
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Old 12-27-2009, 11:46 AM   #4
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You put a 3" exhaust in? maybe at idle its losing too much backpressure, or something else clogged up
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Old 12-27-2009, 12:56 PM   #5
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I'm leaning towards a vacuum leak or an 02 sensor, seeing that you replaced the cat also.
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Old 12-27-2009, 01:12 PM   #6
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I'll go with vacuum leak. The EGR tube would be my guess.
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Old 12-27-2009, 06:33 PM   #7
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thanks guys i will make sure to replace the egr and look over it real good for leaks,because im going to be doing some mods so i wanna make sure everything is good before i do anything else,i will try that and see
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Old 12-27-2009, 07:21 PM   #8
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Whoa don't go wasting money on the EGR, we can't see your car so you need to check it or have it checked by someone
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Old 12-27-2009, 10:55 PM   #9
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the reason i said i would just replace it is because i was told by two other people when i described how it was running they said an egr valve or a vacuum leak because of no engine light is there anything else that could make the engine run like that only at idle without setting off a light.
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Old 12-27-2009, 10:59 PM   #10
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Check all the vacuum lines and the EGR tube by spraying carb cleaner on all the lines. If the RPM changes, you found the leak.
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