Your temp will be regulated within an operating range. One "line" up or down would not be unusual. It probably reacts this way when your cooling fans turn on and off to maintain proper operating temp. As long as it stays in the "good" range and your cooling system reservoir is showing "full", I would not be concerned about it.
2001 Cadillac DeVille Sedan FWD
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Maintenance & Repair
I have a 1999 Cadillac Deville that the drivers window will go down but will not go up. All the other windows work as they should. I can put direct power to the window motor and it will go up. I chang...
1999 Cadillac DeVille Sedan FWD
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Maintenance & Repair
On open road the temp remains constant at the halfway place on the digital gage. When in town or in traffic it overheats. Back on the move on open road it returns to halfway. I just replaced the water...
2003 Cadillac DeVille Sedan FWD
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Maintenance & Repair
I have put a new batter, starter, and alternator on my car, I have had it check by numerous ASE professionals. With a fully charged battery, it sounds close to normal. But after a few days it soun...
1999 Cadillac DeVille Sedan FWD
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Maintenance & Repair
My Cadillac DeVille keeps needing a jump. I've replaced the altinator and battery within last month. I don't know what else is going on. Can someone help?
2003 Cadillac DeVille DHS Sedan FWD
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Maintenance & Repair
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