Hey Everyone,

Sometimes when I start the van and put it into reverse, the idle gets really
low and stumbles a bit. Sometimes it gets as far down as 500rpm before
coming back up. It generally doesn't die and if I give it gas, it's fine.
Does anyone know what could cause that? It seems pretty strange to me.
I was going to check some of my grounds, but I'm not sure where all of them
are. The main one on the left side of the engine and the one on the trans
have both been replaced semi-recently. I also wanted to check the vacuum
lines, but not sure if I'm missing some by not looking in the right place.

Thanks!