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Old 03-28-2019, 01:04 PM
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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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I believed the two thermostat set-up was only used on the QR25DE engine in the Sentra, not on the MR18DE. Here's a link to a part diagram for the QR25DE to show the locations of the two thermostats:

2003 Nissan Sentra Water Pump, Cooling Fan & Thermostat
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