Help with inconsistencies: p0455, then P0506

[Pooh Man]

OK my idle has been between 1500 and bogging only when temp is below 1/4 of the temp gauge, when it is above 1/4 everything is fine and car does not stall. I was studdering under throttle and got the codeP0455 for large evaporative leak. Two aftermarket gas caps later and the P0455 went away and so did the studdering under throttle issue. I also checked connections on the charcoal canister and everything seemed OK. About two trips later I got a P0506 and cold temp bogging and sporadic idle, once warm everything is OK. Anyone know a quick fix - like cleaning a sensor with computer cleaner or gum out or something? I really don't want to hit the dealer, but I need this resolved quickly as I am to start using this car daily for a new gig and may hit up to 600+ miles per week of local driving. Any ideas or previous experiences welcome....thnx

[Pooh Man]

Im trying to source my parts, and it appears the throttle body is "loaded" with the sensors and they cant be bought alone

[Andrewsafb71]

You check the aftermarket gas caps again? I just replaced an aftermarket MAP sensor vacuum hose again and when it originally broke after the OEM hose was replaced it tripped four codes.

[Pooh Man]

other than swapping the cap, how would I check it??

[Pooh Man]

Took it in for service, the fix was completely unrelated to the codes. The TechII read subpar on the MAF and Bank1 Sensor1 O2. Ill report back in a few days to see if this was the proper diagnosis. It cost a lot, so hopefully this post will help someone else out