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Will not start, cranks, fuel pumps not shutting off....


This is a discussion on Will not start, cranks, fuel pumps not shutting off.... within the General Discussion forums, part of the Viper Truck SRT-10 Discussion category!
I think I have the problem solved! I have replaced the crank sensor, and so far so good, has started ...



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Old 08-27-2017, 04:47 PM
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I think I have the problem solved! I have replaced the crank sensor, and so far so good, has started flawlessly for about 30 times now... Would not start twice yesterday before I replaced it.
Suspect it was reporting rpms when the motor was not running...hence not starting. I also contacted Paxton to determine what signals the Paxton FMU needed to command the external fuel pumps on..it needs a boost signal which is 0 psi, atmosphere, and rpms...so it had 0 psi since motor was not running, and rpms most likely from faulty crank sensor.
Will post back if anything changes...but solved for now.
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Old 08-28-2017, 11:39 PM
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NOPE..spoke too soon, did it again today after starting fine 30+ times....took me about 10 minutes and 20+ tries today to get it to start....so on to changing the cam sensor hopefully this weekend....
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Old 09-06-2017, 11:43 PM
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Changed cam sensor, still has same issue...has also started dying driving down the road...has done that twice now. Currently removing the intake and inspecting all the wires and swapping out the coils and spark plug wires while its off....then on to removing the paxton FMU next.
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Old 09-07-2017, 03:33 PM
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Do you have access to a scan tool?
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Old 09-07-2017, 10:18 PM
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Quote:
Originally Posted by rbabody View Post
Do you have access to a scan tool?
Not at the moment, a friend of mine has the Snap On but he is 2 hrs away. Will get it the next time we see each other, which may be in Bowling Green next week.
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