AODE slippage!

[Synned]

Well...before I couldn't figure out what was wrong with my car...I suspected the transmission but wasn't positive.
I'm now 99% sure it is the trans or torque converter.
On light throttle I feel a 'blip' feels like im riding over a bump.
But, when I get on it... the tach actually jumps like a misfire. I don't feel a misfire, and it revs smoothly. Its just that the tach jumps a lot. When I floor it in like 3rd gear, it slips horribly inthe upper rpms. Like it'll stay at 4k and jump to 4.3k and stay there.
This is my trans, right?
I hate this slushbox.
I'm going to have my mechanic take a ride with me, see what he thinks.
Thanks
Joe

 

[Synned]

All right...well
My mechanic drove with me.
We couldn't get it to do the bumping thing, but we did get the tach to jump around. He thinks its just the stock tach is broken.
He also thinks that the other problem with the car is a slight misfire. High gear low rpm and a high load is when it happens (slight cruising at 40mph up a hill) will do it every time.
I don't know....it felt like the transmission to me.

 

[HISSIN50]

A PIP on the outs will make the tach jump/flitter and can cause a miss. If the PIP just has a tiny hiccup, it makes the torque converter shudder feel too.

I wonder if you dont have two separate issues (or if the PIP really is on the outs and at higher RPM is when it's getting bad because the shudder events are not being seen cleanly). If it does indeed continue to rev but the trans isnt doing anything, then your trans idea is decent. You should be locked-up at that RPM.

Just thinkin aloud with you Joe. Good luck bud.

 

[Synned]

A PIP on the outs will make the tach jump/flitter and can cause a miss. If the PIP just has a tiny hiccup, it makes the torque converter shudder feel too.

I wonder if you dont have two separate issues (or if the PIP really is on the outs and at higher RPM is when it's getting bad because the shudder events are not being seen cleanly). If it does indeed continue to rev but the trans isnt doing anything, then your trans idea is decent. You should be locked-up at that RPM.

Just thinkin aloud with you Joe. Good luck bud.

The PIP could cause the tach to flutter because it effects spark? Wouldn't that mean I would feel the flutter as well?
The weird thing is I think I can only get the flutter to happen in the upper rpms in 3rd gear and maybe in od as well.
Thanks
Joe

 

[HISSIN50]

The PIP could cause the tach to flutter because it effects spark? Wouldn't that mean I would feel the flutter as well?
The weird thing is I think I can only get the flutter to happen in the upper rpms in 3rd gear and maybe in od as well.
Thanks
Joe

*I think [personally]* that it's possible for the PIP to burp so slightly that you don't really feel it at higher RPM's. But it would not be gear-specific, so I'd treat the issues as two separate ones.

Spraying out the PIP with some electrical contact cleaner can help things out sometimes (dirt and ferrous crap collects down there). It doesn't hurt things and might change a symptom of issue.

Good luck Joe.

 

[Synned]

Well something is definitely real wrong here.
I can feel the acceleration change with the rpm's, so the tach isn't lying...
I just don't have enough experience to even tell if its something like the transmission, or something wrong with the engine.
The rpms jump around, and sometimes just stick there, and it can't pull up anymore. It's like the engine doesn't have enough power to go faster. The engine sounds like its still going, but I doesn't feel as strong as it should be moving.

The 'blips' that I feel while driving seem to be more harsh when the engine just started, and while its still cold. I don't know how to explain them other then blips. It's at a certain RPM range, very light cruising, and you can feel it through the whole car.
This might be completely unrelated but its like the second time it happened...when the car is first started and you kinda jump on the gas it completely falls on its face and almost stalls, and then picks back up.

I have no clue where to go with this...I'm going to try to clean the pip like you mentioned.
Thanks
Joe