Pulled a plug and get one spark on any of the spark ignitors and then nothing, engine just turns over.

Was starting a week ago has just sat in the driveway

Any thoughts? Crank sensor cam sensor other?

Spark plugs are good and full charged battery. none of the ignition fuses are blown, under the hood or the dash!

Any thoughts or how to check crank sensor

Tha ODBII shows no codes HELP!!!!!

 

Check for bad grounds. Especially the one going from the block to the radiator support and on either side behind the inner wheel wells.

Also try diagnosing the alternator and for a bad ECM/PCM.

 

Symptom Diagnostic procedure
Engine will not start (MIL works OK, no DTCs set)
1. Test the battery
2. Test the starter
3. Troubleshoot the fuel pump circuit
Low compression
Intake air leaks
Locked up engine
Slipped/ broken timing belt
Contaminated fuel