Temperature gauge shows hot but the engine is normal operating te
My wife's 1997 Subaru legacy wagon, 2.5, auto, a/c shows that it is running hot. Both fans run constantly ,but, the engine runs at normal operating temp. It is full of fluid, belt is in good condition, no leaks.
It seems to run at the mormal spot on the gauge when driving on rough roads or when the engine downshifts while going uphill.
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Always check it with the engine running, and put the gearbox into Park. and the handbrake ON, Make sure that the gearbox is warmed up to normal operating temperature first. A drive of a couple of kilometres ( or about a mile and a half, depending where you live) should do it.
To test your new thermostat, do the following
1. Make sure your heater is off.
2. Start your engine and allow it to run for 6 to 8 minutes so it can reach the normal operating temperature.
3. Turn your heat tmperature select all the way up, and then turn the fan on high. You should hear the thermostat click when it opens up to circulate the coolant through the system. You may also notice your temperature gauge reading lowering.
The only pressure you may have in the radiator/cooling system is very minimal and caused by the coolant heating up.Whenever pressure starts building , it is purposefully relieved through your coolant reserviors overflow hose. Thats why you should never fill your coolant reservior all the way up. It needs to have 3 or 4 inches to allaw for expansion.
If the water is flowing into the overflow tank then it is probably running a little hot. It is normal for a little bit to flow into if as the water heats and expands but there shouldn't be enough to overflow the tank. Have you tried changing the thermostat? If the thermostat isn't opening properly this will have all the effect in the world on how hot your engine runs.
The information I can find on this shows a code 15, not 16. It shows it as a problem with the #1 shift solenoid or it's harness. Causing different internal transmission concerns. The book I found shows no code 16,this could be a miss print. Either way, this is a concern that appears to be an internal trans. problem.Good luck.