Why is my temperature gauge going up and down

If it went up and stayed up you might begin to be concerned. It could well be due to one or more part failures something that makes diagnosing it a bit too complicated for the average person.

So now Ive got my backpack and Im ready to go to the University so I start my car pull out of the parking lot and start driving towards the University.

Why is my temperature gauge going up and down. The primary reason your car temperature gauge goes up and down while driving is simply because a component in your cooling system is not functioning correctly. This could be the thermostat valve radiator hoses radiator fan the temperature gauge or the coolant itself that circulates around cools off the engine. If the temperature gauge fluctuates alongside the ODBII readings be prepared for a set of potential issues.

One of them is a clog in the radiator but theres also air in the coolant plumbing system. 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.

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. My temperature gauge keeps going up and down when. Pull off the hose at the top of the motor if you can see the thermostat try pushing on the center with a screwdriver it is most likely stuck open.

You may be able to free it by pushing the center back and forth till there is no longer any resitance but it needs to be replaced. When the coolant goes through the heater core it gets cooled off enough that when it returns the thermostat closes again momentairly. So the temperature goes up and the thermostat opens again and then it goes back down.

If it went up and stayed up you might begin to be concerned. CaptPKelly answered 5 years ago. This is a sure sign of a stuck open or missing thermostat a weak water pump but rare if the water pump is not leaking or a heavily rusted radiator or a bad fan switch if you have an electric radiator fan.

9 people found this helpful. Youll have to check out the entire cooling system before you get to the head gasket. The radiator could be plugged could have plugged cooling passageways could have a defective water pump loose belt issue collapsed hose excessive load on the engine due to dragging brakes underinflated tires and so forth.

The thermal energy does leave the engine block because the universe tends towards thermal equilibrium so the temperature that my cars sensor reads decreases and my temperature gauge goes down. So now Ive got my backpack and Im ready to go to the University so I start my car pull out of the parking lot and start driving towards the University. I have a 1995 GMC K1500 Z71 350 TBI.

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.

Ive been using the heat for the past several weeks and its never done this until now. The temp gauge will normally go up about 13 of the way and stop as usual. It didnt even make it past the bottom bar today and it was definitely warmed up.

Doesnt do it until it gets up to normal operating temp. Sometimes when it does it my truck sputt. If the cooling system is building up excessive pressure then this is often a sign of cylinder pressure entering the cooling system.

The ECT sensor is also a culprit for the excessive reading you can test the sensor using a multimeter and a boiling pot of water. Why does the car temperature gauge go up. Published 05-02-2021 Maverik With the development of technology car overheating has become an old issue.

However that didnt rule out the possibility of your car breaking down in the middle of the road. Many of the car owners face problems with their cars temperature gauge. Why is the temp gauge in my car bouncing up and down and being erratic.

I guess the issue with the smoke on cold start up and the fluctuating temperature gauge are related to the same problem as they both occurred at the exact same time. The temp going nuts could be a Thermostat. The white smoke could be a.

Why does my temperature gauge keep going up and down. An accurate temperature gauge will always fluctuate because the temperature in the engine fluctuates. Usually the only time this is really noticeable is when the engine has been working hard and suddenly has to wait at a junction or similar and the gauge can rise considerably.

Why does my 97 f150 temp gauge keeps going up and down. Almost like it wants to overheat but in never run hot - Answered by a verified Ford Mechanic. We use cookies to give you the best possible experience on our website.

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.

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 which you must be getting false indications. Just bought my first MB c350 cgi and I love it.

But Ive noticed some strange behaviour. When I start the car and wait some minutes before driving the temp gauge is normally moving up to a warmer temp. This is normal temp as I understand.

But after driving slowly for I while it goes. When its not functioning as normal you are going to be faced with three possibilities. The gauge is too cold the gauge is too hot the gauge keeps moving up and down the scale.

Thats all assuming your engine isnt cold hot or inconsistent. My 97 3500 water temperature was going up to 190 and then back down to about 160 I thought maybe the thermostat was sticking. After one day when my girlfriend was driving the truck she called and sayed the heat was not working and the water temp was hot.

Now there are several reasons a cars temperature gauge spikes at stops. It could well be due to one or more part failures something that makes diagnosing it a bit too complicated for the average person. One the reason a car heats up when stopped but cools when driving is that air is moving over the engine and causing the fan to spin.