Surging/Stalling problem....what else is new?

See the following website for some help from Tmoss (diagram designer) &
Stang&2Birds (website host) for help on 88-95 wiring
http://www.veryuseful.com/mustang/tech/engine/

http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif

http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif

http://www.veryuseful.com/mustang/tech/engine/images/88-91eecPinout.gif

Diagram courtesy of Tmoss & Stang&2birds
http://www.veryuseful.com/mustang/tech/engine/images/88Stang5.0Vacuum.gif


Once you have your vacuum problems straightened out, if you are still having idle
problems, see the sticky "Help me create the Surging Idle Checklist" at the top of
the forum for help with your idle problems. The first post in the sticky has almost
all the details you need.

Hey dude, do these pics help? This is a 93 and has 4 hoses, 2 black & 2 white. I broke 1 of the white ones when I swapped intakes and now just have rubber hoses.

On mine there is a port at each corner and one in the middle. The center hose goes to some little canister looking valve/solenoid thing in the hoses from the air pump. The other one going toward the front of the engine is going to another solenoid/valve thing that is attached directly to the back of the air pump. Of the 2 hoses going towards the back, the top one goes to the EGR thing and the bottom one goes to a nipple on the bottom side of the upper intake that is sticking out the backside.

Both of my 93's and my 91 are the same. I think my 88 was also like this. I don't remember it only having 3 hoses, and the engine is out so I can't go check.

HTH
Cliff

The TAD and TAB solenoids are directly under the EGR Solenoid which is located on the back of the passenger side strut tower. I take it you still have the small factory vacum lines. So the the black line which is longer goes to the front Bypass valve for the smog system. One of the gray lines runs from the EGR (the top solenoid) throught the coupler then out to the EGR. The other gray should come from the other solenoid below the EGR valve for the TAD through the coulper and to the back smog valve.

Hope that helps