how to replace the speed sensor? on 1997 Chevrolet Astro

the van only goes 20mph even when your foot is on the gas pedel,

by in Abington, MA on August 11, 2010
2 answers
ANSWER by , August 11, 2010
sounds like a clogged cat converter. go to a shop and have it checked. Roy
ANSWER by , August 11, 2010
Agree with Roy, clogged Cat Converter or insufficient fuel pressure or fuel pump volume!