Hey Jim,

Is it leaking oil or coolant?  When I replaced my oil cooler, coolant
came from the rubber lines and oil came from the case.

If it is oil you are leaking, my first guess is that the seal between
the engine case and the oil cooler is the cause.  I remember that seal
being a bit of a pain to get in correctly so make sure the seal is
seated well.  Also, the oil cooler is really easy to dent so check to
see if there are any small dents that may allow oil to get through.

As for the job, coolant will come from the lines and oil from the case
so be prepared for both to leak onto you.  I suggest draining the oil
and plugging the coolant hoses to minimize the amount leaked.  The way
the oil cooler is held on is by the nut on the center shaft.  If your
jam nut does not work, don't sweat.  You could just get a socket to that
bolt and take the whole shaft out.  That way, you can free the nut from
the shaft when you are not under the van.

Hope this helps,
Andrew

Jim Felder wrote:
> I'm really happy with the way my 2.1 rebuild is running in my 90. But
> of course, there's one more thing wrong so I can't drive it.
> There is a drip coming from the bottom "corner" of the oil cooler.
> Hoses look dry (they're new) and I can't see anything leaking from
> them. I have another part to swap in. I can tell it's tight but
> possible. I have another nut to use for a jam nut to get the pipe out
> if that will help.
>
> Anything I should know before I start this awful job?
>
> Jim
>
>