OK. I replaced the thermostat(180) and Temp switch/sender and the gauge sits around M and A in NORMAL when driving around.
Yesterday, the toll bridge went up and I had to sit for about 6 minutes and idle.
As the car was idling, the temp gauge creeped up to the line right after the letter L but never went into the Red.
I heard the fan kick on and the gauge needle dropped a little bit going back to the right most part/bottom of the letter L
I turned on the heater and it's blowing hot air with no problem.
From this point on, the gauge reads at L even when the car was moving.
I checked under the hood when I got home and no coolant leaks and no boiling in the coolant reservoir.
I'm going to get me a cooking thermometer tonight and check the temps.
1.
So, if I read 190-210ish, is that considered normal coolant temp ?
2.
Could air bubbles trapped in the coolant system/hoses cause this issue ?
3.
Any suggestions on what could be the issue ?
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