Why does my temperature gauge go up and down

The reasons for the failure of the water pump malfunction include seal leakage shaft breakage and casting breakage. The oil pressure will fluctuatewhen you start up the oil is cold and thick so the pressure will be maybe double the normal running temperature.

The reasons for the failure of the water pump malfunction include seal leakage shaft breakage and casting breakage.

Why does my temperature gauge go up and down. 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. A common reason your car temperature gauge goes up and down and no heat is emitted is that your cooling system is faulty.

You may want to check out clogged components such as the heater core radiator hose coolant level thermostat or water pump. The coolant passageway might be blocked with sediments or rust. 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. When the thermostat is stuck open it can cause the coolant to circulate constantly resulting in the motor never reaching the correct operating temperature.

The cooling fans may be working intermittently as a result of a faulty cooling fan relay or resistor. The difference between the relay and the resistor is that the relay controls the power to the fan in total meaning that if. Why does my temperature gauge keep going up and down.

Low coolant a clogged radiator bad water pump and a handful of other things could all be a potential issue. Replacing a thermostat is much easier than replacing an engine so keep an eye on your temperature gauge. 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. Reasons Your Car Temperature Gauge Go Up.

There is not one but multiple reasons why this happens. One thing you should know that this could cost you a lot of money to fix it. When your car gets overheated the temperature gauge is the first thing to indicate it.

If the gauge crosses the optimal mark you should immediately pay attention to it. 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.

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. Doesnt do it until it gets up to normal operating temp.

Sometimes when it does it my truck sputt. When a temp gauge drops to cold it indicates a problem in the cooling system temp gauge sender units need water to activate the resistance that makes the gauge read so a falling gauge indicates no water around the sender unit — air lock in the system–faulty wire connection to the gauge sender unit. I have a 2002 Nissan Sentra.

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 still. Oct 15 2011. 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. 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. The reasons for the failure of the water pump malfunction include seal leakage shaft breakage and casting breakage.

It is one of the reasons why your car temperature gauge suddenly goes up. A failure of the head gasket is one of the worst possible conditions responsible for your cars temperature gauge goes all the way up. 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.

Why Is my Car Thermostat Going up and down. You pull over by the roadside because you saw the overheating light coming on and the temperature gauge pegged up. Then you start the car a few minutes later and everything seems to be fine.

Again as soon as you start driving the temperature goes from cool to hot within a minute. A few days ago got in my car after it has been parked several hours. As soon as I started the engine the temp gauge instantly hit the red fell right back to bottom then shot to red then to bottom.

Once driving it stayed below half way and behaved normally. Got in car the next day and white. I have the over flow tank hooked up properly and coolant expands into the tank when hot and sucks back into the system when it coold down.

Im thinking it is either my gauge my sending unit or something terrible like a head gasket leak pumping combustion gas into the coolant jacket. Edited by Big6ft6 on 12-31-09 0238 PM. I asked the same question about fluctuating temp.

Gauge 8 pages ago. Was told cummins offered an updated thermostat but that it may not fix the problem if it is a problem rather than just an annoyance. Mine does the same thing going from about 160to 190 and back down.

Sorry I cant be of any more help than that. Answer 1 of 8. The oil pressure will fluctuatewhen you start up the oil is cold and thick so the pressure will be maybe double the normal running temperature.

As the engine warms up the oil pressure will go to the normal running pressure.