SS Specific Service Issues/Repairs Service/Repairs specific to the SS. Turbo-Brembo Brakes-2.0 Engine-Limited Slip Differential-Programmable Display-MU3 Transmission

Rough idle when on a downward sope

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Old 05-06-2012, 04:53 PM
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Rough idle when on a downward sope

I don't drive my car everyday and last week I drove it and someone cut me off in a parking lot and I slammed on the brakes and almost stalled it out. it didn't stall but right after that I stopped at a light that was on a downward slope and it started idling rough and wanting to cut out. I drove it home and it ran fine but today I started it up after it was sitting facing downhill in my driveway and it ran rough and was blowing black smoke when I gave it gas. It drives fine and no issues with boost any ideas?

No CEL's or anything like that, possible evap purge solenoid clogged?
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Old 05-06-2012, 05:00 PM
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I killed mine like that about a week ago. Ran like ass for 10 min then fine. You're not alone
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Old 05-06-2012, 05:00 PM
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EVAP Purge issue or the start of something with the low pressure fuel pump in the tank, it bears keeping an eye on. Eventually it'll pop a CEL if the problem occurs during enough run cycles, but you can always swing by an auto parts store to have the codes pulled because it might have already set one.
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Old 05-07-2012, 02:38 PM
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I pulled the solenoid and it was fine so I am not sure what could be the issue. Is it possible it's bad gas? Like I said I don't drive it but maybe once a week.
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