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  1. Anyone have any experience with the 2013 era VP 5.7 V8-300-C-A(AQ) where the IAC and the TPS are integral to the throttle body? I am experience all the classic symptoms of a failed IAC - runs rough at idle speed, signs of running rich on the plugs & O2 sensors. Seeing Pending Codes SPN-4239, 4238 & 4236 using a TechMate Pro Have recently changed plugs & wires; next step is to try new PCV Runs great at speed My version indicates the IAC & TPS are not maintainable or repairable. Other than swapping the throttle body from the other engine, any suggestions on how to nail down with certainty that it is the IAC - really don't want to shell out the 550 deer unless really necessary. Any aftermarket rebuild kits that anyone knows of? Another question - what are the proper mV readings for the O2 sensors that I should see on the scanner? The sensors before the cat are not steady - one side is 745-750 mV and the other side is 870-880mV. Both downstream of the cat read 1244mV Thanks
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