2012 Ram 1500 5.7 Cooling Issue (not a 2010)

Asked by Oct 28, 2016 at 06:57 AM about the 2010 Dodge Ram 1500 Sport Crew Cab 4WD

Question type: Maintenance & Repair

Recently I was driving home and my coolant temperature spiked.  I checked my fluids, I was bit low on coolant, so I corrected that.  I have checked over and over and no leaks.  Well, it has spiked twice within a week, the coolant light comes on, then goes off (within 3-5 seconds).  

Today on the way to work, it was operating right at the 199-203 mark until about 10 minutes into the 15 minute trip.  It then rose all the way up to 233, then slowly crept back down to 215 before getting to work.

After what I have read, I am going to swap the thermostat...am I on the right track?  

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