Quote:
Originally Posted by ethank
Great, thanks for those pics. I definitely haven't got an inline orifice. Is that setup from an '85? it looks a tad more complicated than mine. The 3" rise in vacuum makes sense without the VCV but since it seems to be functioning without the RPM's up (dropping all the way to zero) I can't figure out why this is happening. Maybe the volume of vacuum is way too much without the orifice installed? How does the vacuum volume (am I even using the right word?) relate to the amount of pressure?
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The pics are from my 1984 300D. If someone has access to the EPC they might look up the pars for you and see if it shows the orifice and give you the part number for your Year and Mode.
It also could simply be that your VCV is shot and needs replacing.