Grid heater warning light coming on while driving. Anyone have any ideas? 2004.5 3500 6 spd

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mrnone

Junior Member
Joined
Oct 14, 2015
Posts
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Ram Year
2004
Engine
cummins
Recently replaced injectors high pressure pump air dog fuel lift and a lot of other parts. Took months to figure out out was the computer the whole time. Drove 350 miles and developed a knock like an injector is bad. Did a solenoid check with motor running disconnected each solenoid one at a time looking for a difference. No detectable variance. Getting 21 mpg no smoke easy to start no power loss or other issues. Now the grid heater light is coming on staying on at random times. Truck has 96000 miles original on it has chinafornia emissions.
Thanx in advance.
 
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