torque converter?

Hi,
On average, every other time I stop, it starts vibrating at idle. When it does this, and I try to go, I get very slow acceleration until 5 mph and then it is fine. When it is vibrating on idle, if I shift to neutral and back it usually clears up. Is it not fully unlocking?
Thx

If it wasn't fully unlocking it would drag the motor down, and probably cause it to stall often.

It's probably packing it in, and I don't know how to test them. It could even be the transmission.

The 1 thing that you could easily check is crawl underneath, remove the cover, and check the bolts that hold the torque converter to the flex plate. They might be loose.

If they are use lock tight when tightening them.

if your torqe converter didnt unlock at idle it would kill the engine. it might be fluctuating at idle. what year and what trans does this have. if it is a 700r4 (non-computer controlled shifting) there should be a harness on the trans that controls the torque convertor lockup. if you unplug that harness your trans convertor will not lock up. try that and see if the problem goes away. if it does then you know your trans is the problem. if it is not then you need to look elswhere.