PeachParts Mercedes-Benz Forum - View Single Post - what is this? how do you test if it's working?

a2aa · #7 01-12-2007, 04:41 PM

thanks alot!! As a matter fact, I figured out what the problem was. I backtracked to the vacuum pump and the vacuum dissappeared at the "double T" connection. I believe there is a leak somewhere in the EGR portion of the system.I then bypassed the egr connections and connceted the vacuum line straight to the VCV. In the process, I replaced all rubber and plastic vacuum connectors _ (a whopping $4.00 for parts) and finally attached the vacuum gauge post vacuum amplifier(blue saucer). It started pulling vacuum to 12 inches! I was smiling to say the least. With this, I "T" from that connection and connected the remaining line which is the transmission modulator. The car shifted perfectly! Thankyou so much for all the help and suggestions. This is one awesome site!