ArtReed
New Member
- Joined
- April 2, 2012
- Messages
- 2
- Reaction score
- 0
- City, State
- Frederick, MD
- Year, Model & Trim Level
- 1993 Aerostar 4.0L 2wd
On my 1993 Aero 4.0L 2wd xl, there is a "knurled" or spiral line that seems to go into the bottom of the vacuum tree. It goes around the back of the engine from driver to passenger side, and then I can't follow it. My question: is this a vacuum line? It seems to be loose when I move it up and down, but I'm afraid to pull it out for fear of breaking something. I hear a whistling sound coming from the engine, and am suffering from poor low speed idle. I replaced the vacuum modulator and that helped a lot. I am trying to find my erratic idle problem, which I suspect is a v-leak. Van runs great at higher rpm's.