Thermostat temp guage goes to 220 degrees - 1994 Buick Century

most cars these days do run hotter than they use to. Back in the day, cars were manufactured to run at cooler temps such as 185-195 degrees. So in most cases that would be normal. If the car starts to smell like it is over-heating I would then have it checked but for now I would say it's okay. In newer models they are made to run as hot as 220 degrees. I hope this answers your curosities :o) Jesus loves you, John 3:16-17 (KJV)

your temp mark will also depends on your thermostat range anywhere between say 90 and say 180 if your temp goes in the red then you should be concern

This is most likely 2 problems. The ABS/Brake light and speedo issue will be the speed sensor located in the read differential housing. The temp guage issue (and I'm assuming this is at idle) could be thermostat or temp sending unit. The fluctuation is causes by the electric cooling fan cycling on and off to control the temp. However, most of the time this fluctuation should be from about 195 - 220 degrees.

either the thermostat is getting ready to fail or the temp sensor isnt working properlythese engines also leak fluid from rear side of head after getting hot so check that so may have air in system because of the blown head gasket

possible fan clutch issue with vechicle at operating temp shut off truck see if fan spins freely if so its bad should only make 1or 2 revolutions when spun by hand

It varies from car to car. but around 220 degrees. Noting that all cars do not have an accurate temperture reading at the guage, per manufacturer

I would check o2 sensors but to tell you the truth my dad bought a new thermostat that was suppose to open at 160 degrees his temp. got to 220 degrees before but check o2 senors and thermostat

Hello,
The cooling system is designed to opperate at 220 to 225 deg farenheight. it sounds like it is doing fine. The fan will come on at about 220.

I hope this helps,
Roy

replace the temp sending unit on the engine first

air con is broken