Q: Bolt problem

asked by on

I have begun replacing my thermostat, but I have a bolt unable to be removed from the thermostat housing.

It is common for this to occur on this engine. It is typically due to corrosion caused by electrolysis. Once this occurs the bolt almost fuses itself to the metal around it. In some cases, using a penetrating lubricant can get into the threads and loosen it. From my experience with this engine, I typically need to break the bolt and re-tread the hole and use new bolts. If you are going to have this done, consider YourMechanic, as a certified mechanic can come to your home or office to repair this.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Bolt problem

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: I own a 2000 mercury sable LS DOHC and yesterday I changed my cyclinder 3 coil and my car ran better then ever but I went to start

Hello. There are 2 likely sources of the white smoke - which is engine coolant getting into the exhaust system. The lower intake manifold gasket can leak coolant into the air intake and a blown headgasket - common on these...

Q: I have a 2001 Toyota Tundra 4.7 V-8. When replacing the valve cover gasket, what should I torque the valve cover back to when rein

The valve cover bolt is tightened to 60 inch pounds.

Q: Q: Car runs hot

On some of these engines, the idler, or tensioner pulley, tends to go bad and throws the belt. However, it could be that your belt just broke from age and wear, or another problem caused the belt to break or...

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...
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...