Risky, as you do not want to use very high torque, you do not want to snap the stud. Try low torque and see if it moves, but still use the back and forth action to help loosen the rust.
Have you tried heat, ie torch? It is in a hard to reach place. I cannot really fit a torch in that area. It has a couple wires by it. I was going to say the same thing that there is not a lot of room and using a torch may damage other items. I am going to try some liquid wrench and see how that goes. Give it a good soak and let it sit for a while, you may be wise to do this a few times and work the nut back and forth.
On another topic my wheel bearing wire snap. Not sure what you mean by wheel bearing wire? The wire for the wheel sensor is cut. Screw the three bolts back into the front and back of the new catalytic converter. Mark O'Brien started his professional writing career in at the "Newman Grove Reporter" newspaper. O'Brien indulges his mechanical side by fixing mowers part-time. Step 1 Go to your local auto store and tell the year of your Pontiac Grand Prix car.
Step 2 Slide under the side of your car and locate the catalytic converter. Step 3 Unscrew the three bolts on the front and back of the catalytic converter. There are 8 references cited in this article, which can be found at the bottom of the page. This article has been viewed , times. The catalytic converter, which is responsible for the cleanup of a vehicle exhaust, is a key component of a vehicle emission control system.
When this piece malfunctions, the car will create additional emissions, run more roughly, and have reduced fuel efficiency. While the cost of replacing a catalytic converter can be expensive, you can save money by doing it yourself with just a few hand tools and jack stands. To replace a catalytic converter, start by jacking the car up so that you can work underneath it. Then, locate the catalytic converter at the center of your exhaust system and remove the oxygen sensor with a ratchet wrench.
Next, unscrew the bolts at the back of the converter, followed by the ones at the front, and remove it from the car. Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers.
Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow. Download Article Explore this Article parts. Tips and Warnings. Things You'll Need. Related Articles. Article Summary. Part 1. Park in a level place and jack the vehicle up at all four wheels and support on jack stands.
Replacing your vehicle's catalytic converter isn't quite like replacing a tire — you'll need to raise the entire vehicle off of the ground, rather than just one corner.
It's very important to find a level spot to do this maintenance on your car. If your car is not stable, you risk serious injury or death if your jacks fail. If you have access to a professional-quality hydraulic lift and know how to safely use it, this is also an acceptable way to lift your car when replacing the catalytic converter.
Allow the vehicle's exhaust to cool down. If your vehicle hasn't had an opportunity to cool down after running, its exhaust system can still be quite hot. To reduce the risk of painful burns, give your vehicle a chance to adequately cool down before working on it. Depending on your vehicle's exhaust system, this will usually be a matter of just a few minutes.
To test the heat of the exhaust system, put on a pair of heavy mechanic's gloves and gently brush the exhaust tube with the back of your hand. If you can't feel any heat, you may cautiously repeat this test without the glove.
Locate the catalytic converter. Slide under the vehicle and locate the tubes of the exhaust system, which should run all the way to your vehicle's rear exhaust. The converter should not be terribly difficult to find — it will usually take the form of a rectangular or rounded "box" in the middle of your exhaust system.
Some models can have a roughly cylindrical shape. You may need to take it to an auto shop to have it repaired if it has already been replaced and welded back into position, rather than bolted. You can still replace a welded converter if you have access to a sawzall or similar tool and a welding machine and know how to safely use both, but these advanced tools are beyond the mastery of most amateur mechanics.
Remove the O 2 oxygen sensor from the catalytic converter. Most modern catalytic converters are equipped with one or more oxygen sensors that monitor the efficiency of the car's exhaust system continuously. If your catalytic converter has an attached oxygen sensor, use an oxygen sensor socket and a ratchet wrench to disconnect it before proceeding. When you're done, move the sensor out of your way so that it doesn't interfere with the rest of the process.
If bolted, apply penetrating oil to the bolts. Catalytic converters that are bolted in can sometimes have bolts that are rusted, partially-corroded, or "jammed" into their nuts.
These bolts can be very tricky to remove, so loosen them up by applying a penetrating oil available from most auto stores. Allow the oil to seep into the bolts and lubricate them for several minutes before attempting to remove them.
Remove the bolts at the back end first, then at the front. Use an appropriately-sized wrench to begin loosening all of the bolts before you start removing them. Once all of the bolts are loosened but still attached , remove the "rear" bolts those closest to the open end of the vehicle's exhaust before removing the "front" ones those further away. Remove the converter when you're done. You may have to support the exhaust once the converter is removed. Alternatively, for welded-in converters, cut the converter out.
If your converter is welded into the rest of the exhaust system, rather than bolted in, the only way to remove it is to physically cut it out of the pipes it's connected to.
0コメント