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Car dies won't start

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2002 996 6spd. I had a misfire on the passenger side bank of cylinders a few weeks ago that lasted until I shut it off at my destination and would stay after restarting. Happened again just recently. Odd because 99% of the time I drive it, it runs perfectly. Then all of a sudden car died while driving. Lost all power like pulling the plug. Would not restart, but I had power to all electronics and it turned over no problem. Let it set for 15 minutes. Started right up no issues.

2 days later I replace all three coils on the suspect pass. cylinders (new plugs 1k ago), runs great to work. Come out after work , won't start. I am suspecting fuel pump or fp relay. I am also suspecting the crankshaft position sensor, where is this located and is it a biotch to get at? Anything else to suspect? I'm borrowing a Durametric today.

Update...Car will not start at all now. Ordered fuel pump relay and crankshaft position sensor and will install as soon as they arrive (tomorrow). Has anyone replaced the crankshaft sensor? Thanks.

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I have driven it since I installed the coils and it ran great, then I went to start it and will not fire up. turns over but no love. Gotta be fuel or spark but the no spark is tricky given that there are alot of possibilities. Almost like the DME cut the engine. Hoping the Crankshaft position sensor will be the culprit. I'm open to ideas... Thanks all.

Also, will the ignition switch failure keep the car from starting all together (like the old ...click....crickets....click...) or what I am seeing where it actually turns over but won't start?

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The points you mentioned are all possible, however, random replacing parts is very expensive at the end. Use a diagnostic tool or go to a dealer to read out the fault codes first, according to the codes and some measurements it's more possible to narrow your search IMHO.

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Durametric has done nothing to help so far other than show me that there are no error codes. Tested fuel pump relay contacts with a fused jumper wire but still no start. It turns over but it does not even attempt to fire. It's like theres no fuel or no spark. I guess the fuel pump could be dead? Where is it located and how could i test it? Thanks.

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