Hey guys I am on here trying to find an answer for my brothers 94 vigor. The car was bought second hand with great records for maintainence, with almost 200k miles. It had been driving fine for a few months and all of a sudden one day after warming up the car will start to choke, bog, and eventually stall out then wont restart after it does so. Cranks all day until the battery dies. As soon as it cools off runs fine again until it warms up, very weird. I jumped the check engine light wire and it flashes a code 4, four flashes. I read somewhere else code 4 is a map sensor issue. Replaced that but still the same thing. tune up was done recently also. Anyone have any idea what could be causing this. Also IAC was replaced a year ago with a aftermarket one, maybe a faulty iac? Anyone chime in if they can I appreciate it.