You may want to check to see if the recall on the TIPM was performed. All 2010 thru 2012 Dodge Nitros were affected. The TIPM can malfunction, causing the fuel pump to shut off while driving, as well as many other little issues that can make the vehicle seem almost "haunted". The recall was issue September 21, 2014. Here is a link to a page that will explain it. Defective TIPM Is Causing Dangerous Power Problems in Chrysler Vehicles
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You may want to check to see if the recall on the TIPM was performed. All 2010 thru 2012 Dodge Nitros were affected. The TIPM can malfunction, causing the fuel pump to shut off while driving, as well as many other little issues that can make the vehicle seem almost "haunted". The recall was issue September 21, 2014. Here is a link to a page that will explain it.
Defective TIPM Is Causing Dangerous Power Problems in Chrysler Vehicles