I just put on a new intake manifold and now the car runs like crap and and dies at stoplights and stop signs. im please help. The engine is 1992 305 tbi auto.

 

Check for serious vacuum leaks, especially around the base of the intake near the runners.

 

How would i check that?

 

get sum 1/4 in. rubber hose and listen for a hissing noise at the edges of the manifold

 

better off to buy some carb cleaner like (2+2) and spray around the manifold (engine running). if the idle picks up, you found the leak.

 

That carb cleaner method never worked for me.... Maybe propane will work... (use a little bottle of propane, unlit, and "hose down" areas, if idle changes, that's a leaky area...)
How'd you seal the gasket? with RTV? torque down right?

Is your idle higher then normal now?

 

yeah, dont overlook that.

I prefer the hose-in-the-ear method. Also works good for exhaust leaks, and telling if you're running rich, but you have to stick it in your nose for that...

 

I used fle pro gasket and rtv, I let the car sit for a good day and a half for the rtv to dried. I tried the carb cleaner idea. It didn't work. I was listern to the engine, I think it is coming from the back of the intake. I think it is the distributor gasket, that is the problem. Im going to rtv that up.

 

how about your oxygen sensor?

 

It was the distributor gasket, just a little rtv and it was fixed. Oxygen sensor