Hi all, i have a 79 datusn sunny and it has the econo-monitor gauge option. Which i can find next to no information on.

All i have gathered is that:

It the little thing hangig off the wiper motor, and has a vacuum hose running to the manifold.

It lights up green when in low revs, but red in high revs.

my biggest question is where the vacuum hose connects to the manifold. i cannot see any fittings that suit the hose.

If anyone has ANY info it would be greatly appreciated.

thanks.

PS:Sorry if i annoy 1200 enthusiasts by posting b310 threads
i really hate doing it but there is no b310 forums.

Its a Trap - sorry Its a vaccum guage, was watching Big Bang theory, ' just imagine me with a squid head'. It's amazing yours still lights up, though I think your missing the yellow section. It's just another holdover from the late seventies, early eighties when vaccum guages were touted as the next best thing in fuel economy, the longer it's green the better the economy. I had the same thing in a 1978 120y, but that was purely a guage. It's amazing how quickly that guage used to go to bad economy,maybe I shouldn't have been driving in my work boots.

mine doesn't light up at all. I found a thread you posted on in 2004 saying that it lights up and stuff, and it has made me want to fix it :)i just don't know where the hose connects to on the manifold.

i don't think the gauge is buggered, because the oil light beneath it works fine.

You can put to *any* manifold vacuum source, or Tee it into an existing line.

They still have these. The 2012 Ford Focus I drove on vacation last year had a version with 5 bars that worked exactly the same.

On my 81 b310 the brake booster fitting on the inlet manifold has an extra fitting on it for that hose