Ford Mercury stalls out when stopped

[AutoKid]

Maybe you guys can help me, whenever i come to a complete stop, my 1988 ford mercury stalls or comes close to stalling. I think its a vaccum leak somewhere but im not sure what else it could be, im just getting into cars so im the most knowledgable.

What do you guys think ?

[GTR2b]

The potential causes for this are nearly endless. I'd start with the easy stuff first.

- fuel filters
- clogged injectors
- incorrect idle setting
- fouled plugs

If you check these out first and don't fix the problem, come back and I'm sure we can get this nailed out.

[cpujunky]

Idel by-pass valve is what it sounds like.Change that and it should run like new.