Flat Spots In Rb25De Neo!

[Silver Nissan]

Hello i have a problem with my rb25de neo. It's and auto but i genrally use the semi auto the drive but the problem is that after i get up to 3000rpm. In second gear then change to third and will have a spot where it drops right back down to like 2500 and after a second it picks back up again.To where it should be and it's 5 times as worse if the aircon is running and it will happen even if you change at 2000 rpm. Im totaly stuffed about it i got cam cover gaskets and new spark plugs recently.I thought i would ask on here first before i get my mech to look at it maybe a simple fix?.

Cheers!

[fyjosh]

check / replace the fuel filter

replace all the vac lines

clean AFM

adjust TPS

check the coolant temp sensor

clean the throttle body and IACV

check for vac leaks through intake

replace air filter

and so on...

[Ben C34]

Is it the convertor locking up?

[RiseofBrutality]

Had the same problem a few months ago

Took the intake pipes and vac lines off so the coilpacks could be changed, forgot to tighten up the clamps for the vac lines and they popped off/weren't sealed properly

I think I may still have failed one of the plugs when this happened as I can still feel a very slight miss around the 3k mark