Rough idle, P2110 and 2106, HELP ME!!

[Squamptonaveo]

Alright here we go! Problem started a few weeks ago, got to a red light and rpm needle was bouncing up and down all by itself. I could actually hear the engine going with it so not just the gage.. Rpm drops to about 250-500. After that's I have a few problems with the car not responding when I pressed on the gas.. So I went and got throttle body cleaner and cleaned the whole thing, it was quite dirty. Found out my air intake was cracked so replaced that. Now car responds when j pressed on the gas so that's better. BUT.. Car goes in limp mode after 150kms. I'll clear the code and sure enough, after another 150 Kms I get the same problem.. So I bought a new throttle body and a new pcv valve.. Haven't driven 150kms yet but I still get a bouncy rpm and it dips pretty low when I'm stopping.. Please help!! 2006 hatch back..

[avguy]

Are those codes still active now? If so, they might be indicating a bad throttle pedal/position sensor assembly. That unit is around $100, so if there's a u-pull in your area, it might be worth trying that instead of buying a new one.

[Squamptonaveo]

No I cleared the code when I did the throttle body. I have only driven 46km since then so will have to wait till I hit 150. Light usually goes off on its on if I keep driving with it on. Also should mention it almost always struggles to start in the morning, I have to give it some gas to keep it alive, only in the morning after sitting there all night and only for a few seconds then it's like it kicks in.. I'm so lost at this point, no other codes but the 2 above..

[Squamptonaveo]

The problem mostly occur when I'm breaking and not pressing on gas.. The engine not responding when I pressed on gas problem seemed to have been fixed when I changed the air intake hose.. I'm thinking next step could be changing the egr valve, but hoping someone else had this bouncy rpm problem.. And knows the solution!!

[Squamptonaveo]

Alright well drove it a few hundred kilometres and no more limp mode, the rpm needle still isn't right, goes too low when I stop, and really struggles to start.. It dies right away like its starving for something. Takes a few times and I have to pump the gas until it kicks in. Only happens of the first start in the morning and then fine all day.. I'm so lost!!