app store keeps asking for old ID password!!!!

Sounds like you are trying to update apps that were purchased under the old Apple ID. That's normal and there's nothing that you can do about it. It's the #1 reason why multiple Apple IDs are a mistake. ANYTHING obtained from the iTMS is permanently associated with the ID that was used. Unfortunately, Apple IDs can not be merged and purchases can not be transferred from one ID to another.

The only easy solution involves the free apps. Trash them and "purchase" them again using the new Apple ID.

So I had to make a new Apple ID ,and when i did everything was good and i can use my new apple ID to download apps

However when i want to update my apps it shows my old Apple ID and asks for it password which i don't remember

So why this is happening and what can i do ?

Mine is doing the same thing ! I had to uninstall my facebook app temporarily, but now hat im trying to redownload it, its asking for my old apple id that i have absolutely no access to !

- So you went to Settings>Store and signed out of old ID and into the new one?

- To update apps you still to to use the account the purchased them.