starts, idles, then dies

[oreo]

When I start my Car it will start just fine idle up then down really quick, idle ruff for like 30 sec. to 1 min then die. I have replaced all the vaccum lines, and put a new atr billet vaccum block on. Now im at a total loss at what could be wrong. Anyone out there have this problem??

Jake
89 TTA
92 GMC Typhoon

 

[Razor]

More likely MAF sensor is bad.

But it could be a failing fuel pump, bad injectors, bad chip, bad computer, bad coilpack/module, voltage situation, etc. There is a test for each one of the above. I would check fuel pressure first, and swap MAF for know good sensor. Tho this can be difficult if there isnt another Buick around.

Definetely not vacuum related.