Hi, guys!

I've got a strange issue with my 94' 12 valve. It fires up fine, has good power and doesn't smoke.

But idle is terrible.




Feels like it's too much fuel in pump cause i rev it up a little bit and release the throttle, but engine holds rpms few seconds and after that drops to idle.




https://youtu.be/NdIXnd_3ob4





So, whet it's cold, if i rev it up a little bit and release the throttle, it almost dies, but immidiately bumps back to idle. Whet it's hot, it does this thing only when i put it to gear.




https://youtu.be/AFMK7C-IcfY





So, details about truck:


P-pump replaced (warped plunger issue). Old pump was 838,new is 908. Installed 3k gsk kit, new OFV, lift pump, fuel filter. I did the 0 fuel plate, AFC is screwed up a little.

Truck didn't do this with old pump so i think that some is wrong with new pump.

Any ideas/advices will be fine. Thanks.