I have a 2004 dodge ram 1500 with a 5.7 liter when temp. falls below 20 degrees truck will not start no dtc's present

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Customer: I have a 2004 dodge ram 1500 with a 5.7 liter when temp. falls below 20 degrees truck will not start no dtc's present and it has fuel pressure
Answered by ASE Master Tech 35yrs in 1 hour 9 years ago
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ASE Master Tech 35yrs
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Specialities include: Automotive Mechanic, Small Engine Repairs, Auto Body Repairs, Diesel Engine Repairs


ASEMaster35yrs :

Hi, glad to be of help. First make sure it's getting spark. There are only two sensors related to cold no start problems, coolant sensor and air charge sensor and your coolant sensor may not throw a code so I would change that first if your fuel pressure is within specs and you have spark at the plugs.


Coolant sensor (ECT)


http://www.autozone.com/autozone/parts/2004-Dodge-RAM-1500-1-2-ton-2WD/Coolant-Temperature-Sensor/_/N-jm5lwZ9gslt


 


Air charge sensor


http://www.autozone.com/autozone/parts/2004-Dodge-RAM-1500-1-2-ton-2WD/Air-Charge-Temperature-Sensor/_/N-jm5lwZ9gsls

ASEMaster35yrs :

If you don't have spark at the plugs there is another problem. Check or replace your ASD relay. Check for power to ASD relay & check wiring & connections. See this forum link: http://dodgeforum.com/forum/3rd-gen-ram-tech/290920-asd-relay-not-getting-ground-from-pcm.html

ASEMaster35yrs :

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