95 Pathfinder XE

Lately I've been having problems with shifting. I have an
automatic. When it shifts into 4th (I think) the rpms go to almost 4k.
If I let off the gas it will shift. This also happens when I'm going
about 40 or so. It's done that for about 5 months, but getting to 30
just started. I really don't want to think the tranny is bad. I have
checked the fluid and it's a decent color, not burnt.
I also smell a rotten egg smell from the exhaust. I've had the
exhaust manifold gaskets replaced but the smell is still there. This
leads me to think that the catalytic converter is plugged. I also don't
have much power. Any help greatly appreciated.

This weekend I'm gonna take down the pan and replace the fluid and
filter to see if that helps.

Dana Hoffman wrote:
> Lately I've been having problems with shifting. I have an
> automatic. When it shifts into 4th (I think) the rpms go to almost 4k.
> If I let off the gas it will shift. This also happens when I'm going
> about 40 or so. It's done that for about 5 months, but getting to 30
> just started. I really don't want to think the tranny is bad. I have
> checked the fluid and it's a decent color, not burnt.
> I also smell a rotten egg smell from the exhaust. I've had the
> exhaust manifold gaskets replaced but the smell is still there. This
> leads me to think that the catalytic converter is plugged. I also don't
> have much power. Any help greatly appreciated.
>
> This weekend I'm gonna take down the pan and replace the fluid and
> filter to see if that helps.
>

It sounds like your transmission is failing. The rotten egg smell is
likely from a mixture problem. Is your "check engine" light on? Does
your "OD off" light flash when you start the car?