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Vacuum Diagram?


DOHCRagtopguy

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Posted

Does anybody have a diagram of the vacuum lines on a 93 W-body? I suspect a leak on my 93 CS Ragtop other than the intake manifold. When it fires up cold, it revs high, then comes down some when warm, but misses a little bit. Also the AC and CC doesn't respond as it should.

I want to go over the lines.

 

Just got the T-belt done with all pulleys replaced at a cost of 6 bills, but this problem was there before all that. Getting worse with the cold weather now.

 

Thanks a lot.

  • 3 years later...
Posted

Here's a vac diagram I drew up, it can be applied to any 88-93/94/95 (yeah, first gen is what I mean) W body:

scan0001s.jpg

 

Just ignore the turbo part, and the circled part that shows what is at the front of the transmission will not have the check valve that looks like a dreidel (Jewish Hanukkah toy) on a non turbo W body, just a vac line going into the vacuum modulator.

 

Oh yeah, and anything 91+ will not have a vacuum EGR valve, they are electronic beginning in 91.

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