I've driven a few older mercurys and lincoln from the 1970's. They were all purchased used. When I started to have any troubles resulting in a diminished performance in any of those cares I would disconnect the EGR.
Not sure if it still applys to cars of the 90's but I suggest you go ahead and try it. Just snip the vacuum hose leading to it and plug the ends where you cut.
Drive it and if you think you made a mistake, just reconnect.
If vwhobo was here, I'm sure he would agree.
Last edited by bbaddog : 01-29-2008 at 02:53 AM.