The Diesel Stop banner
1 - 4 of 4 Posts

·
Registered
Joined
·
63 Posts
Discussion Starter · #1 ·
Well, the old gremlins are persistent. I still have a periodic no start. I have replaced the cps
and the tach is moving while it cranks over.
Any ideas out there? I have changed the sensor recently. Is it a given that a moving tach means
the sensor is ok? It sounds like a sensor fail no start. No attempt to fire. I thought it may be the
shifter switch but moving the shifter does not seem to work. So far it has always started after a short wait.
HPOP going out??
 

·
Registered
Joined
·
63 Posts
Discussion Starter · #2 ·
How does the shifter switch work and will a sloppy shifter cause an intermittent
crank no start?? Any ideas?
 

·
Administrator
Joined
·
27,293 Posts
The shifter switch will cause a no-crank. It disables the starter if the shifter isn't in Park or Neutral.

I would say NOT the HPOP, but more likely something electrical. Your best bet would be to get it on a Powerstroke capable scan tool and see if there are any codes. You can also monitor parameters when cranking. Voltage at the PCM is important and needs to be above 9V while cranking.

Is it a hot no-start or any time, cold or hot?
 

·
Registered
Joined
·
63 Posts
Discussion Starter · #4 ·
Thanks good info. I don't remember a completely cold morning no start but in the day after maybe
an hour or so rest it has done it. So definitely warm.
 
1 - 4 of 4 Posts
Top