Anyone Experience this??, Manual Tranny Shifting Problem Options

[Fastbird]

This is probably going to be for the forced induction guys more than anyone, but here's my issue:

I CANNOT hit a hard shift into 2nd at WOT in the car. Simply put, the tranny refuses to go into 2nd gear, and third gear offers quite a bit of resistance at high throttle inputs also. When driving easily however, it shifts fine into any gear I want it to.

Call me crazy but I've always had trouble shifting cable actuated manual transmission under heavy loads. What I think is happening is that my old/weak motor mounts are allowing enough movement in the motor that enough of a shift happens to throw off the sync of the cables to the shifter. What I'm trying to do is get some verification on this.

Thoughts? I must have tried 4-5 times last night on the way home from work to bang a high RPM WOT 1-2 shift and it wouldn't happen.

[Fastbird]

Just using the stock 5S-FE 5 speed tranny (don't know the name of it) but....let me retiterate: Under normal driving conditions there are absolutely no noted issues. Smooth shifting, no resistance, nada. No signs of trouble at all. Only under HEAVY throttle inputs do I get the resistance. And ONLY under the throttle (I.E. heavy loads). If I wind it up and take my foot off the gas, it'll go into gear without much fuss. If I stay on the gas and keep the engine torqued though, it'll have an issue with me. If I slow down the shift too, it'll go. It's only when it's under a heavy load at high RPM and when I try to hit a quickshift or powershift.

Essentially what I'm trying to find out is IF it's possible for saggy and old mounts to allow enough transaxle movement to cause the shift cables to have slack or what not that wouldn't allow gear selection. I honestly don't think it's an internal issue on the tranny because of how it drives at anything but the heavy loads.

Thanks for the words everyone. I'll keep you all posted. I'm probably going to pick up a set of those poly motor mount inserts (my stockers were a bit thrashed when the swap happened) and see if those don't improve anything.

This post has been edited by Fastbird: Oct 31, 2006 - 3:00 PM