I want to start by saying thank you for taking the time to look at this post.

I have a 92 F-150 with the E4OD and about 145,000 miles. Since I bought it used I don't know about prior tranny maintenance, but I have flushed the system regularly.

Occaisionally I have very, very hard shifts. Sometimes it really did shift gears (the engine rpms drop) other times it is a 'false shift'. The transmission (or what I assume to be some component thereof) sounds like it clunked into gear but the engine does not respond. These problems do not seem to be gear or speed dependent, except that they don't occur at OD. Sometimes I can let off the accelerator and won't get the hard shift, but sometimes it doesn't matter.

I don't have any noises or roughness with the transmission otherwise.

I have browsed some of the posts here, but with the search function down I am somewhat limited. If you could give me an idea of what you think it could be I would appreciate it.

Thanks,

Whistler