vec command produces tilde instead of arrow

Question

Upon compilation this generates an "E" with a tilde over it. What I want, of course, is an "E" with an arrow over it. I think this may be a font issue. Does anyone know how to get me what I want?

\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz}
\usepackage[eulergreek]{sansmath}
\tikzstyle{every picture}+=[font=\sffamily\sansmath]

\begin{document}

\begin{tikzpicture}
\node at (0,0) {This math expression should be sans serif and have a vector arrow: $ \vec{ E } $.};
\end{tikzpicture}

\end{document}

Answer 1

A quick solution (please observe \let in the second line):

\documentclass{article}
\let\oldvec\vec
\usepackage{amsmath}
\usepackage{tikz}
\usepackage[eulergreek]{sansmath}
\tikzstyle{every picture}+=[font=\sffamily\sansmath]

\begin{document}

\begin{tikzpicture}
\node at (0,0) {This math expression should be sans serif and have a vector arrow: $ \oldvec{ E } $.};
\end{tikzpicture}

\end{document}