1998 Subaru Legacy L.
I had my car’s timing belt and water pump changed at 107,500 miles (the timing belt was previously changed at 40,000 miles when the water pump had a leak).
On Saturday I noticed that the Subaru’s engine heat was 5-10 degrees warmer than normal. I use an Automatic plugged into he engine diagnostic port that reports to my iPhone. The dashboard temp gauge was fine. Previously the engine temp would be 178º or warmer, usually in the lower 180s on the highway and going up to the 190s in local driving or after going uphill on the highway. But always lowering to around 180 on level or downhill highway driving.
On Saturday, once the engine warmed up, it would not go below 189º and usually between 192-196º. At a red light it might go up to 199º (only went up to 201 or 202º once or twice). No huge jumps in engine temp (that happened last year).
Last year I had the head gaskets replaced and initially noticed higher engine temps but after a week the engine ran cooler. Saturday was a cool day and I notice that the engine has run hotter on cold days on occasion.
The engine temp is within normal operating tolerances. I realize that the coolant might be different than before and that the new water pump has a new temp gauge.
I am just wondering if I should be looking for anything, or if the higher temps continue should I bring it back to my garage (they are very good), or just not worry. The one thing I need to check is the coolant levels. Despite driving these years I am going to classify myself as a novice in diagnosing auto problems.