So, I have a 4.9l 1995 F150 equipped with the E4OD trans. Lately, noticed over the last two or three days, the vehicle does not accelerate with moderate throttle. I can hear the RPMs of the engine increasing, but the vehicle speed will remain the same.

I checked my fluid color and level in the trans, and all was in fine. There was no discoloration or odor, nor was the fluid low at all. I'm wondering if this is a torque convertor issue, or a problem with the clutches slipping.

Mind you, my truck just hit 70k, so this isn't a high mileage vehicle. Under light load, or throttle, the vehicle will shift fine through all gears. However, if I try to accelerate heavily, the vehicle speed will not increase. Rather, the RPMs will rise, but I will not see a change in speed.

If anyone could provide me with some insight into this dilemma, it would be greatly appreciated. This is my daily driver, and while I'm alright with a set of wrenches, I do not have the tools or skills to rebuild a transmission.

Thank you.