Volvo Repair: 1989 Volvo 240 DL - Gas Flooding Engine, volvo 240 dl, fuel pressure regulator

Question
1989 240 DL, 205,000 mi., 65,000 on re-built engine.  Car is driven 5 days a week.  Recently driven off the freeway after 15 mi. to a stop light.  Turned right onto street and car sputtered and died.  Found gas was leaking from the air intake duct.  Technician has told me he spent 5-6 hours diagnosing problem.  Says that it is a combination of the cold start fuel injector mechanically failing and that the computer that controls the injectors is bad; after taking the computer control off the injector that he manually operated the fuel pump and the cold start injector is not closing off and fuel is being dumped through it.  This did not make sense to me.  I asked if the computer also controlled the closing of the injector as well as the opening of it.  He said that without the computer to control it that it should still shut.  He said that the other injectors are dumping fuel into the cylinders and that's why he believes the computer to be bad.  Is this an accurate diagnosis, or could this gas flooding problem be some other problem?

Answer
Craig, he should check the fuel pressure regulator first but his theories are good and yes that can happen with a bad computer.  He should change the ect sensor first.  That controls the amount of fuel as well.  I would check those 2 things first before condeming the fuel control unit. Roger