Okay Ive had this problem since about 6000 miles ago and havent had the money to put into it... FYI, Ive searched, I just dont know the correct terms to search for.
When I accelerate from a stop or while moving, the engine shakes very badly going from 1st to second gear. The entire truck shakes and I have to let off on the throttle a little to stop it from shaking. I lose almost all engine power when it does this and I have to accelerate slow and steady. When I gun it from a stop and just keep gunning it through 2nd gear, it loses about 75% of its power and slowly accelerates through 2nd gear. Then picks back up in 3rd gear. It doesn't happen in any other gear.
I've replaced the plugs and wires (double checked they're in the right spots), and coil pack. Replaced and then cleaned the MAF sensor, replaced the air filter and it has fresh oil in it every 3000 miles.
2002 Ranger 3.0 V-6
What is causing this? I'm stumped...