Just recently purchased a 2011 PPV, ran like crap when I got. So far I have replaced plugs and wires, new air filter and cleaned the throttle body. Runs a whole lot better now but when I am coming to a stop the RPMs drop below 500 and shudders a bit then levels off then the RPMs bounce around until it settles, 30 seconds or so. I am not sure what else to do besides replacing the coil packs maybe. Currently running Premium. Any advice is much appreciated.
Idles rough coming to stop
- Thread starter aarons129
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- 5.3 flex fuel idle problem
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Welcome to the forum from Oregon.
Any CEL? Last time mine did that, I had a bad O2 sensor.
Any CEL? Last time mine did that, I had a bad O2 sensor.
Need to look at it with a scanner that will do live data. What are the short- and long-term fuel trims at warm idle?
After it warms up a few minutes does it go into Closed Loop? Are the O2 sensors moving up and down?
After it warms up a few minutes does it go into Closed Loop? Are the O2 sensors moving up and down?
opfor2
Full Access Member
check the coolant sensor by the power steering pump. they have been known to cause idle issues if bad.
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