Bought a non running 740 a few months ago and after redoing nearly the whole fuel system the car runs and drives. On start-up I have to press the throttle and keep it at 2k rpms for 20 seconds. When I slowly come off the throttle, it will idle down and nearly stall before coming up to 1000-1200 rpms...

Still here. Solve some of the issues. Wonk fuel lines and Chinese fuel pumps with missing O-rings were likely causing a lean condition. I replaced everything from the in-tank pump to the fuel rail. Makes 43 PSI at the rail. No experiencing a hunting idle when in park. It will stall or nearly stall t...

I recently bought a non-running 1988 Volvo 740 Turbo (B230FTLH 2.2 AW71). The fuel pump and filter, injectors, fuel injection relay, and spark plugs were recently replaced by the previous owner. Car would run on starting fluid. Tested the fuel pumps by disconnecting the line and pumping gas into a b...