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PRG

Intake Air Grid Heaters

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My manual states that the intake air grid heaters will cycle on and off for approximately 3 minutes if the intake air temp is below 60 degrees F. However, I can't seem to find the durtion of the on cycle anywhere. Mine stay on for about 3 to 4 seconds, then off for about 15 to 20 seconds. Just curious if this is the correct cyclic timing sequence.PRG, 2002, Ram 2500, 5.9 CTD, 4 WD, Extended Cab, 8" Bed, Quadzilla XZT+, Quadzilla Monster Air Intake, Quadzilla Recon Gage, Okanogan Highlands, WA.

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It total different depending on the IAT temp sensed at the manifold. The colder it is in the manifold the longer the grid heater will stay on. So there is no set time for how long they run. The IAT sensor will deside if the grid heater are needed because of low manifold temps. Like if I fire mine up on a cold morning I notice the if it idles the grid heater stay off more. But give it some throttle and grid heater are popping on and off more often. But to reverse this turn my exhaust brake on and the grid heater will nearly stay off.

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Thanks Mike. You have a great informational web site! Thanks for that too!Cheers,

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