I just recently purchased a 2002 Nissan Frontier SE with 126K miles. My concern is after the truck has set over night or for an extended period of time, I have to go down the highway 6 to 7 miles before it will shift into overdrive. Before finally shifting into overdrive, my RPM range is 2600 to 2700 at 60mph. When it finally shifts, my RPM range is 2300 to 2400 at 60mph. After shifting into overdrive, it is fine for as long as I drive the truck. Is this normal? If there is a problem, where do I start the fix? Has anyone else experienced this problem?
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2002 Nissan Frontier Question: 2002 Nissan Frontier Slow To Shift Into Overdrive
Answer #1Superbob March 21, 2011, 19:54Master
The engine may not be warming up enough to shift to overdrive, due to a failed engine thermostat. If the engine is not fully warm, it probably won't go into overdrive. Have the thermostat checked, it's probably supposed to run the engine at about 192F and if it's failed, the engine probably doesn't get above about 160F unless it's gone about 5 miles..
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