Skip the auto shop - Our mechanics make house calls

Q: Bolt broke by thermostat

asked by on

I was trying to figure out why my car was overheating and a bolt broke off by the thermostat.

A: There are a lot of malfunctions that can ca...

There are a lot of malfunctions that can cause a car to overheat. Low coolant level, worn water pump, sticking thermostat, internally clogged radiator, externally clogged radiator, improper cooling fan operation, sludge coated water jackets, collapsed hoses or bad head gaskets. The thermostat is a good place to start, but they can be checked without removing them. The 3.8 in your car has a history of bad head gaskets. It’s also possible that your temp gauge is malfunctioning. A thorough diagnostics is needed to inspect all the parts of the air flow and coolant flow systems. A snapped off bolt can be troubling. Steel bolts can seize and corrode when threaded into aluminum. Heat is usually required and a bolt extractor kit. A qualified mechanic from YourMechanic can come out to diagnose the overheating issue and inspect your thermostat.

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: Thermostat leak

Hello, I have come across this many times on this vehicle. You will need to replace the thermostat housing as an assembly to stop the leak. These begin to leak because the plastic warps and no longer seals. You would...

Q: My car is violently shaking in nuetral and remains this way when I start driving

Hello, thank you for writing in. A vacuum leak if bad enough can cause engine vibration. The vibration is technically caused by the engine misfiring and not combusting the air/fuel mixture correctly. Fix the vacuum leak since you already know...

Q: Bad Ignition switch Symptoms

If upon actuating the ignition switch you hear "crackling" noise in the dash, that could be due to arcing or a faulty component such as a relay that happens to be in the circuit that you are powering with the...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...