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Hey everyone was hoping someone might be able to point me in the right direction with this issue I've been facing for a while now.

My Celica's idle will drop down to almost 200rpm when stationary after hitting operating temperature. Pretty much feels like it's about to stall out but never actually does. When taking off from a set of lights it almost feels like it hesitates or is down on power and then all of a sudden it lurches forward and gets a boost in power again. Then again around 1,500-3,000rpm it feels down on power and in what I can only describe in the engine feeling scratchy. Past 3,000 rpm it gets a little boost in power again but still definitely feels down on power compared to what it used to be and still has that roughness. Also when letting off the accelerator while cruising it's quite jerky.

Note lift is also not working at the moment but I have changed the lift bolts, planning on cleaning the VVT and VVTL-i OCV's

New engine mounts have been installed

I changed the MAF sensor about 4 years ago albeit not OEM.

After doing some research my main ideas now would be a New MAF this time OEM, TPS, IACV or Coil Packs (Changed plugs 50,000km ago)

Any other suggestions would be greatly appreciated!!!

Hi c:

I'm wondering if there's any options for custom shifters for a 4speed auto celicas? I'd love to be able to customize the interior more :3