Engine will just keep cranking,stutter at times even die while driving, have replaced fuel pump, o2 sensors, now have found its more than likely crankshaft position sensor, I'm not sure where it is located, can't seem to find any helpful diagrams that actually show me where its located

if it shuts off while driving down the road. and restarts after 10 minutes, its usually a bad crank sensor that does this. it messes up timing and shuts off fuel supply.

is the your car engine cranking when you try to start, first check spark plugs ignition coils, remove one ignition coil and spark plug fix the spark plug in to the ignition coil then connect ignition coil to wiring and keep spark plug body touching on ground of engine head mettle parts, ask some one to crank engine then you can see is the plug sparking or not, do the same way to all the coils and plug otherwise you have to buy a ignition spark tester, is the all the coils and spark plugs are OK then check the fuel pump, it's sitting in under rear seat, before that do one thing disconnect oxygen (O2) sensor wiring and crank engine, the thing is if your oxygen sensor completely dead fuel pump will stop working, if engine start after disconnect O2 sensor, replace new O2 sensor, otherwise need to check fuel pump relay fuse and fuel pump. is this information helped you? please vote me and give a comment.

Vacuum leak? MAF sensor dirty? Should be some codes. don-ohio

upper 02 sensor run on a loop till the engine gets warm then it reads the sensor get you back on the road fast it will work better if the engine is warm when you take out the o2 sensor

sounds like your crankshaft sensor is faulty.I would change that first.

the auto shut down relay is not like a fuse that can shut the engine off the name it has actually has not much to do with its function.. the relay is controlled by the computer .. its main function is to stop run-on and turns off o2 heaters power to coil and injectors if you had the key in the run position and engine not running your battery would dies faster than a drive in movie.. but anyway if your stalling and think its the relay failing just swap it with another one that looks the same from the PDC.. what you may have is a bad fuel pump or even a crank sensor have you had it scanned for codes? sometimes but not always you may have a code for lean upstream o2 if the pump is failing but not always.. and for the crank sensor you may have a crank shaft position sensor performance or cam/crank sensor code ..

But, you did not change the crank sensor (on the drivers side of the bellhousing, just where it's a real pain to get to)

you might want to chk. the crank sensor and or cam sensor. sounds more to me that it could be fuel problem. chk. fuel pressure. pump could be on its way out. don't be fooled by hearing the pump running as they sound like they are pumping but there not, at least not enought pressure to keep it running. pressure should be around 50 p.s.i.

maybe have autozone or equal scan the computer for codes. could be a misfire in the cyl. somewhere. give me a code number and i will try to assist you further.