Skip the auto shop - Our mechanics make house calls

Q: Temperature gauge past 260 degrees

asked by on

My temperature gauge isn't working right. When the ignition is on the needle goes up past 260, but my engine never overheats. It’s just the gauge that’s malfunctioning. The coolant temperature light is always on, too, but when I check the radiator it’s always full. My Trans Sport is a Montana extended edition with 4 doors. Do you know how I can fix this? Any help would be appreciated.

Hello there. There are a few possible reasons why your 1997 Pontiac Trans Sport would have a high temperature gauge reading like this. There are two lines of reason for this problem. Either the gauge is reading high due to the coolant temperature sensor, or the temperature gauge itself is faulty. The other possibility is that the temperature actually is that high. When diagnosing this, the first thing the technician will check is what the temperature is actually reading from the coolant temperature sensor and what the actual coolant temperature is. Have a qualified technician, such as one from YourMechanic, diagnose the overheating issue in order to have this repaired.

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

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: Didn't want to start then started drove 40 mi overheat a little at red light car die wont start

You will need to check the coolant level to see if you lost coolant or the cooling fans are not coming on. Have a mechanic like one from YourMechanic come to you and check the engine overheating problem to see...

Q: no oil pressure

It sounds like you may have a wiring issue with your oil pressure sensor. I would recommend inspecting the wiring yourself or having the wiring inspected professionally to determine if the circuitry is causing any issues. If any wiring requires...

Q: AC fan not working

The most common causes of the AC fan not working are problems with the temperature sensor or the fan itself. If you need assistance with this, I would recommend having a certified mechanic, such as one from YourMechanic, come to...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...