Temperature gauge goes up and down and no heat

The car doesnt boil over. I was shocked because I had only been in the car 10 minutes.

About two weeks ago I noticed that my warning light for high temp was lit.

Temperature gauge goes up and down and no heat. However if the thermostat fails to open your engine will heat up quickly but without coolant liquid it could overheat more quickly. Thats why you should always keep an eye on your temperature gauge and avoid high repair bills. Some thermostat faults might cause the temperature to climb and drop in mere moments.

2010 had inspection done and replaced upper radiator hose at that time. Right after that I had no heat and the temperature gauge would go up to hot but then come right back down. Brought it back to mechanic changed thermostat and both things ok only part way home.

Started riding with coworker only driving to her house 7 miles away and. Another common factor why temperature gauge goes up and down and no heat is the cooling system. As the name implies this is the system that tries to moderate your cars temperature.

The cooling system isnt one of the intricate systems in a car but it is one of the most important. If your temp gauge is not staying stable it keeps going up and down and you have PO300 code you will have to troubleshoot the problem until you find a solu. 2004 Impala 34 with about 170000 miles goes from having normal heat to having no heat at all and the dash temperature gauge goes up and down as well.

The car doesnt boil over. I want to think its the thermostat. This started since the temperature outside dropped but I did have the same issue last winter as well.

It vanished in the spring again. On October 23 2016. Ok so my temp gauge is fluctuating sometimes alot more then some it goes all the way up to overheat then goes back down to normal i just replaced thermo stat burped the radiator then a little bit ago it started fluctuating alot more and now when i get done driving it theres alot of antifreeze in the overflow tank and i.

Gasket has been replaced at that time but after 600 hundred km without any issue i am facing this constant problem of the temperature gauge going crazy and for whatever reason it comes from 90 steady up to 120 in about 30 to 40 seconds and then it comes back down while im still driving and then all the cycle again up and down up and down sometimes more than 120. The main reason why car temperature gauge goes up and down while driving is because something is not working properly in your cars cooling system. It could be the radiator fan water pump thermostat valve coolant or the gauge itself.

To fix either of these issues wed advise that you engage a proven auto mechanic. Outside temp says 62 AC running on and off running set at 68. Temp gauge goes to the second line to the right past center.

Start moving and temp creeps down to center and stays there. Stop at the store for 3 minutes start the car and sit at the light and the same thing happens. Start moving and the temp guage goes to center.

Gauge fluctuates constantly between normal and 210 in cool weather40 below. Also during accleration it will rise to 210 and drop back down never staying at a constant temp. It constantly moves between normal and 210 exempt during summer time it stays steady.

I replaced the t-stat 3 times having no affect. Since you are experiencing no overheating problems the most likely cause is that the engine coolant temperature sending unit is faulty. This sends a signal directly to the dashboard gauge.

There is another coolant temperature sensor close by which sends a signal to the ECU to help in engine management. One very cold morning zero degrees Fafter sitting in the drive way all night the coolant temp gauge started fluxuating while I was driving. Up until this time the truck would always sit at 210 degree any time of the year.

On this day it warmed up to 210 then would go to 230 then go back down to 190 then back up to 210. 2005 Pontiac Vibe wagonover 300000 no issues until recently. The temp gauge goes to overheat.

Here is what has been done in the past two weeks. New thermostat proper coolant new radiator cap sensor and just installed a used gauge panel. Fan is plugged inheat sensor gun shows normal temps.

The car is not overheating if the temp gauge goes up and down by turning the lights on and off. The gauge is giving you bad information. You can confirm this by starting the car from cold sitting in the driveway let the temp go to somewhere BEFORE normal operating temp then turn on headlights and fan blower on high watch the gauge then turn them off.

I own a 97 Chevy Monte Carlo. Ill try to make this as brief as I can. About two weeks ago I noticed that my warning light for high temp was lit.

I was shocked because I had only been in the car 10 minutes. But then it started to go down. Then it was kind of floating up and down.

Also I noticed I had no heat. I took it to a chevy dealer near where I work so I could have the. Replacement thermostats come in varying temperature ranges and you can typically go up or down 10 degrees to fine-tune engine temperature for the application.

For instance you may opt to use a 170-degree thermostat in place of the recommended 180-degree thermostat if you do a lot of towing or a 190-degree thermostat if you want to pick up a bit of horsepower and increase. What causes a 2003 mercury mountaineers temp guage to go from cold to hot then back to normal in seconds while driving. There could be a number of causes of a fluctuating temperature gauge but most commonly is the thermostat.

It could also be a head gasket cooling fan problem or the actual temperature sending unit. The issue that I am having is like. My temp gauge will jump from just below the 210 mark on the gauge all the way up past the max 260 mark instantly.

With no noticeable heating of the engine. I havent had time yet to try anything that has been suggested here but I have now gone two evenings and a morning without an incident. If your car thermostat goes up and down then chances are that there is a connection problem between the temperature sensor and the temperature display positioned inside your car.

Its wire might have become loose due to. Another reason the temperature gauge could read cold is if the thermostat in the vehicle stays open. With the thermostat stuck open the engine can be overcooled causing a low temperature reading.

If this is the case the thermostat may need to be replaced. What to Do If Your Temperature Gauge is High. If your temperature gauge is reading high it means your car.

One of the common problems of the Mitsubishi Pajero NM MonteroShogun 2001-2003 is the crazy temperature gauge. The symptoms are simple suddenly with no notice the temp gauge shows that the engines temperature is in the red area if youll stop and check you will see that the coolant is not boiling and the engine is not really hotter than usual.