Question about 1995 Subaru Legacy

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95ls Rusty clamps btwn exhaust pipe/ catalytic converter/ Y pipe

The clamps and spring bolts are disintegrating from rust between these exhaust system sections. Is there any corner cutting way of replacing them without buying $1600 worth of exhaust system parts? The car is only worth $2000 at most.

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Those Y pipes are very spendy and rust is definatley a bummer. I live in the desert southwest and see this problem much less as there is little or no rain. Depending where you live it might be worth it to call a yard in vegas or phoenix and purchase one salvage and try to get it ground shipped as cheap as possible. Couple of hundred for the Y pipe and 75 bucks shipping might be a way to go.Set terms and get supplier to guarantee its condition

Posted on Jul 01, 2009


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1 Answer

How can I remove catalytic converter near firewall?

Catalytic converters are in the exhaust pipe and have 2 bolts holding a clamp. These bolts rust easily so use a penetrating oil on the bolts and nuts before attempting to loosen them or the chance of breaking them is great.

Mar 12, 2016 | Cars & Trucks

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How di I replace a catalytic convertor

Replacing a catalytic converter ranges from easy to moderate for most DIY mechanics. It is best to take off the entire exhaust system (not the exhaust manifold or headers) for a through inspection when doing this job as a bad catalytic converter is a sign that other parts of the exhaust system may be requiring replacement as well including the muffler(s) and tail pipe(s). Tenneco's Walker Muffler site has detailed schematics for both domestic and foreign cars. TRW Aftermarket may carry them too. (If you own a very expensive car; you plan on keeping for a long time , see about a stainless steel exhaust system... Borla, Remus, Supersprint, Bosal, and ANSA make many for foreign cars.) The other thing(s) to check and remove before taking the exhaust pipes off are the 1 or 2 Oxygen sensors... they will affect your gas mileage significantly. Unplug the wires to them and unscrew the front one and look at it. If it's filthy fouled replace it and the lower (if there are 2) one too... the information from both of them influences the car's ECM/ECU computer to adjust the air/fuel mixture.. (NGK, Beru, and Bosch make oxygen sensors for most cars.) Ensure you buy new exhaust pipe hangers and mounting bolts, if your hangers don't include them. Use Penetrating oil on a COLD exhaust system to help free up the bolts that join the lower part of the exhaust manifold to the first part of the exhaust system. Letting it sit overnight seems to work best. You may need a new gasket there so prepare and buy a new one to replace it. (When replacing, tight is good, too tight is bad as you may break off the stud or bolt.) IMPORTANT!!! Old catalytic converters need to be disposed of as hazardous waste as they contain several gridded wafers of electroplated platinum base metal. (Contact the new catalytic converter seller to see if they will take your old one or contact your city or county disposal office to see how to properly dispose of a used one.) Exhaust pipes typically fail where there are bends as the metal is stretched and thinner there... look for holes and rust. Typically, a ratchet set, rubber mallet and hacksaw may be required to cut a catalytic converter out and then crush the round inner sleeve remaining inside the exhaust pipes ends with a thin flat chisel, pulling it out of the "good" exhaust pipes using locking pliers (a.k.a. Vise Grips tm). (Alternatively, a rubber mallet may be used to strike the catalytic converter to break it loose from the exhaust pipe ends... DO NOT DO THIS if the catalytic converter is in the disintegration stage. Do Not use the mallet on the exhaust pipes as they will bend!) Use crocus cloth or sand paper to smooth the inside of the exhaust pipe connections and ensure by trial off the car that the new catalytic converter goes in the pipe ends easily before mounting the separate pieces on the car... terrible to learn it won't go in, due to carbon soot or rust when you're on your back underneath!

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Where is the catalytic converter located in a 94 chevy corsica?

From the engine, you have manifolds coming out the side of the engine. It will probably look a little rusty. The manifold is the first part of the exhaust system. After the manifold, you will have pipe running below the car. the pipe is bolted to the manifold. After the pipe there will be a larger portion of the exhaust. Kind of an oval shape pipe. Probably roughly 12" long. The catalytic converter gets VERY hot, so let the car cool completely before touching.

Dec 01, 2011 | 1994 Chevrolet Corsica

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2000 S80 2.9 Is the connection where the exhaust and catalytic converter meet threaded on both the exhaust and the catalytic converter, or does the bolt just go through both and have a nut on the end? ...


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What are the torque specs for 1996 Buick Century 3.1 L intake manifold?

Front Pipe REMOVAL & INSTALLATION Pipe Without Catalytic Converter
  1. Before removing any component of the exhaust system, always squirt a liquid rust dissolving agent onto the fasteners for ease of removal..
  2. Raise and support the front of the vehicle on jackstands.
  3. Remove the exhaust pipe-to-manifold nuts.
  4. Support the catalytic converter, then disconnect the pipe from the converter. Remove the pipe.
  5. Remove the exhaust gaskets. To install:
  6. Be sure to use all new gaskets when required. Assemble the system, check the clearance and tighten the bolts to about 15-30 ft. lbs. (20-41 Nm). Fig. 1: Front exhaust pipe connection common on vehicles with the catalytic converter not included 86813320.gif

  7. All clamps should be tightened to about 18-25 ft. lbs. (24-34 Nm). Do overtighten the clamps. If pipes become dented they can leak.
Pipe With Catalytic Converter
  1. Before removing any component of the exhaust system, always squirt a liquid rust dissolving agent onto the fasteners for ease of removal.
  2. Raise and support the vehicle.
  3. On some vehicles you will need to remove the brace from the transaxle.
  4. Remove the exhaust pipe nuts from the manifold.
  5. Support the catalytic converter pipe bolts from the rear of the converter.
  6. Lower the catalytic converter/front pipe assembly from the vehicle. To install:
  7. Be sure to use all new gaskets when required.
  8. Attach the new catalytic converter/front pipe assembly to the vehicle. Tighten the pipe to manifold nuts to 20-40 ft. lbs. (27-55 Nm).
  9. Attach the bolts at the rear of the catalytic converter/front pipe. Tighten them to 30-35 ft. lbs. (41-47 Nm).
  10. Connect the brace at the transaxle if removed.
  11. Lower the vehicle. prev.gif next.gif

Dec 18, 2010 | Buick Century Cars & Trucks

1 Answer

My car has no power when you accelerate and there is a whistling noise coming from the exhaust.

There are a LOT of potential problems to consider in this scenario. However, given your limited description, one thing I would check is for a clogged exhaust system. A fairly common occurrence is for the guts of the catalytic converter to essentially disintegrate over time, come loose, and sometimes to get blown back into a pipe or the muffler where it can clog the exhaust. Sometimes debris from an old muffler can do the same thing.

The newer catalytic converters are much less expensive than they used to be, and sometimes a generic one can be fitted. There are simple tests a mechanic can do with a vacuum gauge on the engine to look for a clogged exhaust, or you can simply putt he vehicle on a lift and do a visual inspection for old, rusty components that appear as though they are falling apart.

One other possibility is that your exhaust has rust through in a section near where the Oxygen sensor screws in, and that sensor is getting false readings as a result and feeding the bad information back to the computer. That could explain the poor acceleration too.

Nov 28, 2010 | Buick LeSabre Cars & Trucks

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Part of muffler pipe undone?

I suspect you are referring to the section of exhaust between the exhaust manifold and the catalytic converter. Does the car sound like a tractor? If it does, I suspect the bolts at the manifold flange have rusted and fallen out. You can fix it yourself with the correct size bolts.

Here is a diagram of a basic exhaust system...

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1 Answer

How to replace/remove both catalytic converters

Below are the steps needed to remove the catalytic converters. You may be able to first remove the band clamp from between the converter and the exhaust manifold, then loosen the rest of the system and to get enough clearance to slide the converter towards the front of the vehicle but you will need to first remove the clamp that holds the converter to the rest of the exhaust. Hope this helps
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First you need to raise the vehicle.

Next, you need to pry the insulators from the support brackets and support the muffler and tailpipe with jackstands.

Then, loosen the the catalytic converter down pipe-to-front resonator clamps and separate the front resonator from the converter down-pipes. Carefully lay the free laying exhaust on the ground.

Right Catalytic Converter

Then, remove the down-pipe-to-transaxle bracket nut, loosen the clamp and separate the extension pipe from the converter.

Next lower the vehicle and remove the air filter and intake ducts. Disconnect the wiring harness for the O2 sensor and the remove the sensor.

Finally loosen the band clamp at the exhaust manifold and remove the converter from the engine compartment. You may need to replace these clamps after removal because you need to pry it apart and they will leak when you reinstall.

Left Catalytic Converter

Now disconnect the wiring harness for the O2 sensor and the remove the sensor.

Next remove the down-pipe-to-transaxle bracket nut

Finally loosen the band clamp at the exhaust manifold and remove the converter from the engine compartment.

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1 Answer

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HI, this guide will help you with this replacement.

Step1 Lift your jeep. Unfortunately, the catalytic convertermag-glass_10x10.gif sits about midway down the length of your jeep, so lifting one end or the other will not do. Ramps are your best bet to get you within reach of the parts when working from home. Luckily, this is usually the hardest part of this repair. Step2 Be patient with the bolts, as they are often hard to remove due to size and awkward placement. You may have to drill or saw bolts to remove them. With this in mind, you should pick up new bolts, nuts and seals for your replacement project. Step3 Buy a catalytic converter specific to your jeep to avoid extra work. A generic part must be welded into the jeep, while a vehicle-specific model comes pre-welded to the proper pipes for easy bolt-on installation. Step4 Remove the 02 sensor (with an O2 wrench) before unbolting the catalytic converter. Then, you should remove the pipe connecting the sensor to the converter. Depending on your exhaust system, you may have to remove more pipes before you unbolt the converter from the muffler. Step5 Replace the old catalytic converter with a new one. This should be the easy part, as you simply bolt the new part in place. Step6 Reattach the exhaust pipesmag-glass_10x10.gif and 02 sensor, and the basic job is done. Make sure you replace any cracked or rusty pipes while you have the exhaust system apart.

  • Catalytic converters often fall under a separate emissions warranty that lasts at least 7 years and 160,000 miles. Even if your car is out of its regular warranty, but it is a newer model, ask your dealer to replace the part for you free of charge.
  • Rent the O2 wrench or socket if you do not own one. Most auto parts stores carry this tool for rentals.
  • In many states, older (vintage) cars do not need a catalytic converter, so you can gut it or remove it completely. No damage will result from running a car without a converter.
  • Due to emissions standards, it is illegal to buy or install used converters.
Please rate and god bless:)

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1 Answer

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