3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Need help with Intake Grid Heater

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Old Nov 17, 2015 | 09:13 AM
  #1  
bobinyelm's Avatar
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From: Texas
Need help with Intake Grid Heater

2003 Ram 3500 HO

I am far from home in the Pacific Northwest with a problem and need to disable the grid heaters. It is raining 24/7 so I am looking for the cleanest/quickest way to disable the heaters.

I found reference to a fuse that controls power to BOTH grid heater relays (solenoids) but I don't know where it is located in my fusebox. (The coils are "hot" via this circuit and the PCM grounds the other side of the relay coils to activate the relays)

Can anyone help with a fuse location?

An alternative is removing the fusible link wire (that feeds the heater relays on the engine block) at the battery terminal, but I don't SEE a separate terminal connected to the battery terminal that can be removed. The terminal has several wires molded into it that cannot be removed, however.

Any help to disable this circuit w/o having to climb into the engine compartment would be most appreciated.

Thanks-
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Old Nov 17, 2015 | 11:24 PM
  #2  
FastTaco's Avatar
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From: Wilson, NC
Going to be in fuse box under hood drivers side.
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Old Nov 18, 2015 | 03:20 PM
  #3  
bobinyelm's Avatar
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From: Texas
Originally Posted by FastTaco
Going to be in fuse box under hood drivers side.
Didn't see a label there for it...

I ended up detaching the fusible link from the passenger side battery, which allows the solenoids/relays to activate, but the primary circuit is not powered, so the heaters cannot draw current.
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