i have a tr manual 2.6ltr and somethimes i get this surging at random times like the car is starving of fuel. i put some injector cleaner in it and it has helped a lot. what do you think could be causing it? also how do i change the fuel filter as i dont know?

mine did that it was missing real bad changed the leads and plugs and it stopped unless the revs are hell low

thanks i was thinking bout getting a service in bout 2 weeks so im hoping it will help. how do you clean the tps took mine off and green with corrosion