Join Date: Apr 2009
Location: South Jersey
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Well, it did it to me again today. I think it may also have to do with temps. Today it's pretty warm in S.Jersey, 78 degrees. I took a 12 mile trip and when I got to my destination the idle was bouncing up and down between 500-700 rpms. The AEM WB showed it going rich when the idle dropped each time as well (though that could be the computer adding fuel to avoid stalling).
When the rpms dip (near or slightly below 500 I DO hear a feint knocking sound from the engine). But I presume that is normal from such a rough low idle. It kinda like when you don't give it enough gas when taking off in first.
Another thing I noticed is, in general, the car isn't very smooth at low speeds in first gear- for example driving around a parking lot. It's very jumpy.
I wonder what the cause for this is??? I'd be quick to say it's something to do with MPS1 but some have mentioned they've experienced this on their stock vehicles. I also though it may have to do with my plugs (NGK iridium 1-step colder) though- again, I'm not sure everyone has these that is encountering this issue. It's quite annoying becuase at stop lights after a long drive it feels like I'm driving a clunker. I can even HEAR the rpms in the exhaust rhythmically when it happens as well.
2005 Crossfire SRT6
345whp/360wtq; 12.13 @ 113 w/ 1.778 60ft: SOLD
2008 Dodge Caliber SRT4
19psi Flash, MPx catted DP, Mopar Cat Back, Needswings Intake, Mopar Sways, Eibach Springs, MPx Strut Bar, Light-weight Crank Pulley, & Gauges (Scan Gauge, AEM WB)