When i start the motor it shoots to bout 4 grand and then dies. i have the barmeter or what ever its called vacum and the vacum on the back of the intake hooked up. is there any others that need to be hooked up in order to idle. is there anything else i should be looking for.
I'm not sure I'm understanding what you are saying, but a 93 with mass air is not supposed to have vaccuum to the MAP sensor. It's supposed to be open to atmospheric pressure.
No. All 5.0 Mustangs made after 89 are Mass Air. All Mass Air cars do not connect the MAP/BARO sensor to vacuum. The MAP/BARO vents to open air.
Fix the incorrect vacuum plumbing first.
Diagram courtesy of Tmoss & Stang&2birds
If you still have idle problems after you have correctly connected all the vacuum lines, see the "Surging Idle Checklist for help with all your idle/stall problems. Everything you need to find and fix idle problems is in there.
The first two posts contain all the updates to the fixes. At last count there were 24 possible causes and fixes for surging idle/stall problems. I continue to update it as more people post fixes or ask questions.
See the following website for some help from Tmoss (diagram designer) & Stang&2Birds (website host) for help on 88-95 wiring Mustang FAQ - Engine Information Everyone should bookmark this site.