87 4kq coolant reservoir cap bad?

[auditude at cox.net]

Hey Cade,

Once the cap pops, it has to be replaced.  It's like a fuse that way.  You should be able to
get a new one anywhere, but especially at an import parts place.  I think it should be around
$8 or so, but I could be wrong.  You may end up with a blue one, I don't know if there are
different pressures, but if you spec one for the car you should be fine.

I'm wondering if you had a different problem that caused it to boil over or whatever it is
called.  Is the fan coming on like it should?

Ken

Cade Carvell ccarvell at nbsusa.com wrote:
>
> Hello,
>   The other day I had accidetaly put in to much coolant in the resevoir
> tank (expansion tank), which later caused the famous hood raised and
> coolant vapor spewing out.
>   So, after car cooled down, got it home, ad put in more coolant, and
> was careful to watch the lines for level....
>   Now, when the engine is warmed up I can hear a hissing coming from the
> cap on the resevoir tank, meaning that it is not sealing properly, or is
> realising pressure to quickly.
>   Anyway, I am going to need to replace it, does anyone know of a place
> that would sell this new?  I can find it used around here...But I would
> rather spend more and get it new.