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For example, if you typically fill your vehicle with the cheapest low-octane fuel, try running your vehicle on a few tanks of high-octane fuel. Adding one gallon of lacquer thinner to ten gallons of gas at your next refuel may also be effective clearing out catalytic converter deposits.
You can try either of these methods in combination with the Italian Tune-Up method. You may need to fix other engine problems in order to solve your catalytic converter problem.
A lazy oxygen sensor might falsely indicate a catalytic converter problem, yet not set a DTC for itself. A technician can determine if the sensor is responding as it should. Other engine problems, such as fuel trim running too rich or too lean, oil or coolant burning, or engine misfire problems could all lead to catalytic converter contamination or premature failure.
Depending on the extent of the damage already done, fixing engine problems might save the catalytic converter from a meltdown.
Exhaust leaks are common and can skew oxygen sensor readings without setting other DTCs. Worn exhaust gaskets and corroded flex pipes are two common issues that are significantly less expensive and more effective than replacing a catalytic converter. Removing and cleaning the catalytic converter is another potential fix. After removing the catalytic converter, use a pressure washer to blast out any contaminants from the matrix. Be sure to flush the unit from both ends. Another way to clean the catalytic converter is to soak it overnight in a combination of hot water and degreaser or laundry detergent.
This process takes longer but is necessary to dissolve the deposits clogging up your catalytic converter. After washing or soaking, be sure to dry the catalytic converter completely before reinstalling. Step 5: Prepare your tools.
Identify what size sockets or wrenches are required to remove the catalytic converter flange nuts or bolts. Sometimes various extensions or flex joints, or a ratchet and socket on one side, and a wrench on the other side are required for removal.
Take care to make sure the tools are properly seated before attempting to torque the hardware loose. As noted earlier, exhaust hardware is especially prone to rust and therefore extra care must be taken not to round off or strip any hardware.
Step 6: Replace the catalytic converter. Replace the catalytic converter with a new one, and replace any exhaust flange gaskets to prevent exhaust leaks. Emissions regulations vary from state to state, and a vehicle can be failed for having the incorrect catalytic converter installed. Step 7: Install the catalytic converter. Install catalytic converter using the reverse of the removal procedure, steps Some vehicles use a catalytic converter design that is built into the exhaust manifold, and bolts directly to the head s , and leads down into the exhaust system.
These types of catalytic converters are also very common, and in many instances can also be replaced with a basic set of hand tools.
Step 1: Locate the catalytic converter. For vehicles that utilize catalytic converters that are built into the exhaust manifolds they can be found under the hood, bolted directly to the engine cylinder head, or heads, if it is a V6 or V8 engine. Step 2: Remove obstructions. Remove any covers, cables, wiring, or intake pipes that may be obstructing access to the exhaust manifold. Step 3: Spray penetrating oil.
Spray any exhaust manifold nuts or bolts with penetrating oil and allow them to soak for a few minutes. Remember to spray not only the hardware at the head, but the hardware at the bottom flange leading down to the rest of the exhaust. Step 4: Raise the vehicle. Depending on the design of the vehicle, sometimes the bottom bolts can only be reached from underneath the vehicle. In these instances it would then be required to raise the vehicle, and secure it on jack stands in order to access these nuts or bolts.
Step 5: Identify the tools needed. Once the vehicle is raised and secure, identify what size tools are required, and loosen the exhaust manifold hardware both at the head and at the flange. Again take care to make sure that the tools are properly seated before attempting to loosen the nuts or bolts, as to avoid stripping or rounding off any hardware.
Replace catalytic converter with a new one. Replace any manifold and exhaust gaskets as to prevent exhaust leaks or engine performance issues. Step 7: Install the new catalytic converter. Install new catalytic converter using the reverse of the removal procedure. All things considered, bolt-on type catalytic converters are typically a simple job to do, however, the specifics can vary greatly from vehicle to vehicle. If you do not feel comfortable attempting to replace one yourself, have a certified technician, such as one from YourMechanic replace your catalytic converter for you.
The most popular service booked by readers of this article is Catalytic Converter Replacement. Our certified mobile mechanics perform over services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair. Catalytic Converter Replacement Cost. Service Location. Method 1 of 2: Installing a bolt-on type catalytic converter located in the exhaust system There are many ways a catalytic converter can be bolted on, specifics vary from vehicle to vehicle.
Materials Needed Assortment of wrenches Jack Jack stands Penetrating Oil Ratchet and socket assortment Ratchet extensions and joints Safety glasses Step 1: Raise the vehicle and secure it on jack stands. Remove the hardware and the catalytic converter should come free. Method 2 of 2: Installing a catalytic converter built into the exhaust manifold Some vehicles use a catalytic converter design that is built into the exhaust manifold, and bolts directly to the head s , and leads down into the exhaust system.
Also take care to remove any oxygen sensors that may be mounted in the manifold.
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