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2004 3.0 ranger cranks but wont start


langesean1

New Member
Joined
Jan 31, 2014
Messages
4
Vehicle Year
2004
Transmission
Automatic
evnin. thanks in advance for your time and knowledge. Tuck ran fine , no check engine light came etc. The next day when I went to state it just cranks but wont fire. I checked the fuel pressure at the rail and its fine.Fuel pump runs for a few sec. then shuts off-like it should.Pulled a plug and NO SPARK.Itested the coil and had it tested at the local auto parts store and its good.WTF? I read it could be the crank isensor or thecam sens. How do I test those?Thanks!!!
 
First check for 12volts at the coil with key on.

After cranking with no start pull a spark plug and check if it has fuel on it's tip, fuel pressure at rail is fine but are the injectors opening?

Crank(CKP) sensor issue should turn on the CEL(check engine light)
Same with Cam Sensor(CPS)
Problem with CPS would not cause a no start, poor performance yes, but engine would still start.

CKP sensor problem would cause a no start.
For the 2000 and up CKP disconnect the 2 wire connector, with key on engine off measure voltage coming from computer, should be 1 to 3voltsDC.
Now switch meter to OHMs and test the sensor, should be 250-1,000ohms, varies by outside temperature
 
RonD , thank you very much for the much needed info on the CPKand the CPS.I will check the CKP as you described and post [Hopefully] good results. First time user and I cant say how much your time and knowledge is appreciated~!
 

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