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Exhaust Pipe Replacement
What is an Exhaust Pipe?
As the engine burns fuel to mechanical power, the liquid fuel is turned into a gaseous state full of toxic chemicals. Instead of letting these exhaust gases vent into the air we breath, an exhaust system is used to channel these gases through a cleaning process, quiet the noise of combustion, and vent the filtered air from the back of the vehicle. To direct these gases through converters and mufflers, metal exhaust pipes are used. These metal pipes can withstand the abuse of high heat, and the corrosive properties of gasoline and road debris to last for many years.
How does an Exhaust Pipe work?
The exhaust pipe works like any other pipe, as it channels exhaust gas from one place to the next. It begins at the exhaust manifold flange, moves down to a specialty pipe called a 'flex pipe', and from there a new portion of the exhaust pipe extends from the flex pipe to the catalytic converter. This section of the pipe will contain an oxygen sensor, allowing the computer to analyze the exhaust before cleaning in the catalytic converter. After the catalytic converter, another section of exhaust pipe will move the cleaned exhaust to the muffler, and an oxygen sensor on that portion of the pipe will allow the computer to analyze the gases after cleaning. This provides a measurement of the efficiency of the catalytic convertor(s). Finally, the muffler is attached, and quiets down the noise from the engine. Attached to the muffler is the tail pipe, which channels the gas downwards, keeping heat away from the rear of the vehicle. This is a typical system, and there are many configurations of these parts.
The average cost for a 2004 Mitsubishi Endeavor Exhaust Pipe Replacement is between $4,013 and $4,048.
Labor costs are estimated between $73 and $107 while parts are typically priced around $3,940.
This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
For a more accurate estimate based on your location, use our Fair Price Estimator below.
What are the symptoms of a bad Exhaust Pipe?
When a portion of the exhaust pipe fails you may notice a check engine light, depending on which section has become perforated, but you will certainly notice the engine has become substantially louder and may lack power or use excessive amounts of fuel. That is because the engine may be compensating for the false readings from the oxygen sensors. Visible clues include rust or damage to the exhaust pipe, signifying an area that may be leaking exhaust and preventing the processing of exhaust gases.
Can I drive with a bad Exhaust Pipe?
A vehicle can be driven without a portion of the exhaust system, however, this is not recommended. Aside from pollution and legalities of having a properly functioning exhaust system, a leaking exhaust pipe is likely robbing you of fuel mileage, and the hot discharge from the exhaust leak may be overheating one of many components on the undercarriage. Having the exhaust system repaired at the soonest opportunity is the best course of action to return your vehicle to proper operating conditions.
How often do Exhaust Pipes need replacement?
Exhaust systems incur enough failures that specialized shops for exhaust systems have sprung up in most towns around the country. However, the typical repair is more likely to be a muffler, catalytic converter, oxygen sensor, or exhaust manifold gasket. Exhaust pipes are made corrosion resistant, and it takes many years for that material to break down under dry conditions. This is why most vehicles in dry climates will never need a section of the exhaust pipe replaced. Those who live in areas frequented by snow, road salts, heavy rains, and high humidity are at higher risk of needing the exhaust pipe replaced, and this can become a necessity in only a few years in the northeast united states.
How are Exhaust Pipe issues diagnosed?
Diagnosing a leaking or perforated exhaust pipe simply involves looking for the leak, or following the sound. Exhaust pulses from a leaky exhaust pipe are unmistakeable to the trained ear, and are sure to be the loudest thing under the vehicle. Listening for a leak, and focusing on the rusted or corroded portions of the exhaust pipe will soon yield the discovery of the leak.
How are Exhaust Pipes replaced?
Since exhaust pipes are either clamped together or welded on, the replacement procedure may be to cut off the portion of the pipe needed replacement, or disconnect the portion of pipe at the clamping location. Once the bad section of exhaust pipe is removed, the new section can be cut to size, fitted, and clamped or welded in place. If the portion of the exhaust has been ordered from the manufacturer, only removing and replacing the fasteners is typical, but if the pipe is being repaired from raw pipe, the technician will likely need to bend the pipe to match the old section before refitting and welding or fastening the pipe in place.
RepairPal Recommendations for Exhaust Pipe issues
If one portion of the exhaust pipe is perforated due to corrosion, it is likely that another location will soon have the same issue. having the entire exhaust system inspected for corrosion and damage can prevent a return trip to the shop in the near future. Also, the rubber and metal brackets used to secure the exhaust to the vehicle should be inspected, as the exhaust system is fairly heavy and will encourage corrosion to create perforations if not secured properly.
What to look out for when dealing with Exhaust Pipe issues
While repairing the exhaust pipe, it is extremely important not to bump or misshape the heat shields surrounding the exhaust system. Changing the position of the heat shields will nearly always cause the heat shields to vibrate at certain engine speeds due to engine vibration frequencies at those speeds. There are many sizes of exhaust pipe, and ensuring that the inside diameter of the exhaust pipe matches the replacement section will help avoid issues during installation. Always measure the pipe before purchasing a replacement section.
Can I replace the Exhaust Pipe myself?
For bolt-on replacements, changing a section of the pipe is simple, especially if there is no oxygen sensor to change. That being said, if the pipe is to be manufactured for the vehicle, attaching flanges and installing the pipe will require pipe bending equipment and welding equipment. If this is the case, most DIYers will not have the tools or training to accomplish this task. On bolt-on applications, the exhaust bolts will likely be rusted, seized, and fragile, and heat or cutting may be required to remove the fasteners from the vehicle. If there is any doubt about removing the bolts, it may be best left to a professional.
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