2001 Dodge Ram 1500 5.9L. Engine Cranks but will not start or even attenpt to start. Fuel pressure is 50 PSI, Injectors firing, Good spark at plugs. Scanner shows no RPM's while cranking, replaced crank sensor, still no start, No codes. Any ideas as to the most common problems with these symptoms?

 

TPS maybe..no codes correct? My failed cat caused a no start..Bat at a full charge?

 

Clogged cat? Or, bad coolant temp sensor...

Pull a couple plugs, are they wet?

 

Clogged cat I'll go with. Unscrew the pre cat o2 sensor in front of the cat and see if it starts.

 

If the pre cat o2 is 'unscrewed' and it still doesn't start doesn't mean the cat still isn't bad, that's just one test to see if it is..if it's clogged really bad it won't start either way..

 

It should at least make some internal combustion sounds with the O2 out, even if the cat is totally clogged.