On Thu, 19 Feb 2004 01:13:47 GMT, Richard Schneiderman
<NOSPAMrschneiderman@yahoo.com> wrote:

>Gas guage shows full when car is cold, when it warms up, the guage reads
>properly most of the time.
>
>What could be causing this?

Probably the sending unit in the gas tank.

> Will I have to take out the gas tank to replace this?

Yes, and that would be opening a can of worms on a car that old.
It's a big hassle, and by disturbing the tank you might well provoke
it to start leaking.