I have an 89 gl that's been having this issue since I got the car. Upon attempting to start it will fire then immediately die you have to pump the gas to get it to start. If you pump the gas get it started then hold the car at say 3,000 for a moment it will stay running.Once the gas is depressed it will then idle at 1,000 rpm and once warmed up will have light idle surge im stumped. I've checked vaccum cleaned IAV and engine has had a full tune up.