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04 Nissan frontier truck problems Forums > > 04 Nissan frontier truck problems 04 Nissan frontier truck problems
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Frontier Nissan Frontier/HB/Truck Discussion Forum

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  #1  
Old 05-10-2018, 10:57 AM
pyrokiller2008 pyrokiller2008 is offline
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2004 Frontier Crew Cab
 
Join Date: May 2018
Posts: 1
Default 04 Nissan frontier truck problems

Can anybody help me figure out what's causing my truck to switch on and off OD by itself? When driving my rpms are at 2000 then all of a sudden I'll hear a clicking noise then my rpm will jump to 3500 to 4000 rpm even when I'm driving locally. Can anybody tell me what is causing this? My dashboard doesn't lite up any issues so can't hook the computer up to it to find out.

Last edited by pyrokiller2008; 05-10-2018 at 11:07 AM.
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  #2  
Old 05-19-2018, 01:17 PM
smj999smj's Avatar
smj999smj smj999smj is offline
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2006 Pathfinder
2003 Frontier King Cab
2003 Frontier KC SVE 4x4
 
Join Date: Jun 2012
Location: Prospect, VA
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Sounds like there's an intermittent short or open in the OD switch circuit. Basically, there are two wires at the O/D switch, one to a chassis ground and the other to the TCM. When the O/D cancel operation is selected, the TCM prevents the trans from shifting into 4th gear. With the wires in the shifter and the shift constantly being moved back and forth, it's possible that the wire broke inside it's insulation causing an intermittent open circuit. It's also very possible to have a faulty O/D switch. There is a testing procedure in the "AT" section of the factory service manual.
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