1966 Crown Coupe, 2016 200 S AWD, 1962 Lark Daytona V8.
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17,294 Posts
Welcome to Allpar. The fuel pump should 'hum' right after key-on for a second, then turn off waiting for the engine to crank over. The delay doesn't sound normal and may be a relay, wiring or PCM problem?
Get a wiring diagram and use 12 volt bulbs with jumpers to the fuel pump power/ground terminals and work forwards to the underhood fuse/relay (PDC) box. With long enough wires and a bulb tucked underneath a wiper blade, you can watch the bulb when the engine quits to see if it goes out or not. A fuel pressure gauge screwed into the rail and tucked under a wiper blade can help monitor fuel pressure as well. This will help locate the problem.
The P0352 isn't necessarily the coil and is probably a symptom more than a cause. It can be wiring/connectors, PCM or just where the engine decided to stall at. Even with 2 plugs not firing, a P0352 should at least give you a sputtering 2 cylinder engine with the other half of the coil working.
The crank position sensor can fail and not set a fault code, but I'm not saying that is the problem. Diagnose first. Does your scan tool display sensor and input/output states from the PCM?
Get a wiring diagram and use 12 volt bulbs with jumpers to the fuel pump power/ground terminals and work forwards to the underhood fuse/relay (PDC) box. With long enough wires and a bulb tucked underneath a wiper blade, you can watch the bulb when the engine quits to see if it goes out or not. A fuel pressure gauge screwed into the rail and tucked under a wiper blade can help monitor fuel pressure as well. This will help locate the problem.
The P0352 isn't necessarily the coil and is probably a symptom more than a cause. It can be wiring/connectors, PCM or just where the engine decided to stall at. Even with 2 plugs not firing, a P0352 should at least give you a sputtering 2 cylinder engine with the other half of the coil working.
The crank position sensor can fail and not set a fault code, but I'm not saying that is the problem. Diagnose first. Does your scan tool display sensor and input/output states from the PCM?