Skip the auto shop - Our mechanics make house calls

Q: Temperature gauge jumping

asked by on

my Citr0en c2 temperature gauge jumps from 3 bars to red i have changed water pump, thermostat and housing and coolant temp sensor also bled it.

My car has 177000 miles.
My car has a manual transmission.

A: Hello. If possible, it would be good to ver...

Hello. If possible, it would be good to verify coolant temperature (with a laser thermometer or similar), to confirm that your temperature sensor and gauge are reporting temperature correctly. If so, it’s possible that you have a blown head gasket - given the advanced mileage. Blown head gaskets can "superheat" coolant rather quickly by leaking combustion gases into the coolant cavities in the engine. Coolant can be tested for the presence of these gases. I would recommend having a certified technician diagnose the overheating issue if you need further help having this addressed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Silhouette

Many different parts can cause the vehicle to overheat. The most common would be the thermostat, radiator, water pump, air in the coolant, or a coolant leak. When a vehicle overheats at idle the usual suspect is the radiator fans....

Q: Leaking coolant using water

Hello. It sounds like you have a simple and straightforward problem. The radiator may be leaking because of the age of your BMW 745Li, and likely needs to be replaced. When the radiator is replaced, it is a good idea...

Q: AWD not working when the rear is overheating.

Hi there. Check the oil level on the rear differential to your vehicle. The oil level may be low and causing the differential to overheat. Look for signs of leaks and any loose bolts. If the level is low, top...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.