I did a full engine rebuild on an 01' Boxster S 6sp this winter. Took my time, $8k worth of parts from Pelican, should last a lifetime from here...
Now reassembled, but engine will not start (arghh).
1) First checked fuel pressure, zero. Appears DME not telling fuel pump to kick-in. Fuel pump works as I can hardwire it and get 60psi. Even after creating "manual bypassed" fuel pressure, car will not start. Thus no spark.?
2) Heard issues of relay issues with DME, Fuel Pump, & Ignition specifically. Checked these 3 Relays and they were fine, but I replaced them regardless.
3) DME giving error code P0336 "Camshaft Position Sensor A Circuit Range/Performance". So I replaced the CPS. The logical culprit. But to no avail. Still getting same code and no start. (I have reset the codes just to be safe, but it comes right back after you try to start).
All of this might suggest a wiring problem. But, no electrical issues before the rebuild, no damage to the wiring during rebuild or reassembly. Triple checked every connection in the engine and its all buttoned up tight electrically. This is a low mileage nice-weather only car only so no corrosion in the system.
Cars electrical system seemed perfect before the rebuild.
Im at a loss.... ideas, anyone?
-Mike
