Ye I'll do that too, thanks.

 

just to let you know you can get a chip for SD hypertech.I had one for my 86 had it on for 8 months before i missed gear and spun a bearing.I found it on ebay for $100 it was the best bang for the buck i did can`t remember if i sold it or not had 5 cars since i will look and let you know

 

dirty mass flow censor?

 

If its not vacuum check ECT,... that sensor will cause this also,.. had it happen to me too.