So, I got tired of rough idle, questionable acceleration and surging and have investigated the purge valve inside the vapor canister. It looks like swiss cheese so, there's my vacuum leak. You can't find replacement valves for these things so you're stuck with doing one of several things. Putting "shoe goo" on the holes in the valve (tried that and now it's worse), figuring how to duplicate one out of similar material (don't want the hassle), finding a junk yard dog (without a holey purge... yah good luck), disconnecting the entire can (too much gas odor in the cab) or, trying to locate a close copy for little $$.
Sooo. I went over to Rockauto.com and found a match for a 1991 Grand Wagoneer. It's a Standard Motor Products # CP 3045. I believe it's got either 3 or 4 ports, two for vacuum and perhaps one for inlet emissions. The original has 4 ports however, I have no reason to believe that this will not work if it turns out to be truly 3. I figure I should be able to tee in my gas tank and carb vent together to plug into the passive inlet. The two vac ports should match my feeds from ported vac and from the PCV.
Best of all is that this thing only costs $30. It should arrive late this week. When I get it in, I'll post pics and any modifications that I might have to make to make it work. I know this subject has been hotly contested, especially on where to get a replacement...
Sooo. I went over to Rockauto.com and found a match for a 1991 Grand Wagoneer. It's a Standard Motor Products # CP 3045. I believe it's got either 3 or 4 ports, two for vacuum and perhaps one for inlet emissions. The original has 4 ports however, I have no reason to believe that this will not work if it turns out to be truly 3. I figure I should be able to tee in my gas tank and carb vent together to plug into the passive inlet. The two vac ports should match my feeds from ported vac and from the PCV.
Best of all is that this thing only costs $30. It should arrive late this week. When I get it in, I'll post pics and any modifications that I might have to make to make it work. I know this subject has been hotly contested, especially on where to get a replacement...
Originally posted by scotty1998
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