i have a 1993 escort wagon i recently pulled out my stock engine and put in a escort gt motor i can help u .
ask the mecanic to check your mass air flow sensor if he unplugs it and the car runs the same u need to change it .also u could have a major vaccum leak,the intake boot could have a hole in it ,at last resort ask him to check your fuel pressure . u can message me for more ideas if u need more help . here is my wagon .
