87 dakota, from headache to hopeful

You guys know the story bought it, idles great, falls on face when driving and puking when gas is hit after coasting. Changed break booster seemed to help some, now the egr light is on that is the next thing on my to do list. the break booster replacement did seem to help. it doesnt seem to stall as easy now, and the engine seems a little stronger. problem is now my break lights one turn off. any ideas?

check your engine vacuum with a vacuum gauge. at idle it should be between 17-21 inHg. If it's less, you could have a vacuum leak or restricted exhaust.