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Discussion Starter · #1 ·
Have noticed that the gauge on the car is moving from normal operating temp to cold while driving. It seems to come up to normal while idling in traffic but once out on the road the needle will fall below the cold part of the gauge. It's having no noticeable affect on driving.

I would assume its the thermostat given that the car is '94 and possibly original but I did an antifreeze flush last summer and this has only started happening since that. I was carefully about bleeding the system but is it more likely its air in the system and anything I could try to determine which?
 
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