Question about 1995 GMC Yukon

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Have no horsepower, very hard to start, no trble codes appear: Could the catalytic converter be clogged

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It could be or your fuel pump could be weak, fuel filter could be dirty, need a tune up? Lots of things can cause those problems....

Posted on May 09, 2013

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1 Answer

What are the symptoms of a catalytic converter


Low horsepower very little exhaust especially when u rev it hard. for a plugged one or plugging

May 20, 2014 | Cars & Trucks

1 Answer

Loss of power check engine light


is the check engine light on ! if so it may be a clogged up convertor. here is the symtoms, A clogged catalytic converter reduces the flow of a vehicle's exhaust by creating a constricted and/or blocked exhaust channel, which engine exhaust gases flow through on their way out of a vehicle's tail pipe. By reducing the flow of exiting engine exhaust gases, a condition that creates an increase in engine exhaust back pressure (thereby reducing engine efficiency), a clogged catalytic converter results in a small reduction in engine horsepower. A clogged catalytic converter causes a reduction in vehicle gas mileage.
Fumes leaving exhaust is sulfurous as if it is coming from a rotten-egg is one of the unmistakable clogged catalytic converter symptoms. good-day !



Nov 09, 2011 | Cars & Trucks

1 Answer

We've been recently told (after our check engine light came on, no longer any horsepower left to accelerate and once stopped can no longer start the vehicle) that our 2001 Hyundai Sante Fe had a...


If your mechanic is right about catalytic converter at fault then you can ask him to just remove those for a while and check if your car works fine. Catalytic converter are there just to reduce pollution and I don't recommend to drive without them but for checking you can do that for a while.

Aug 15, 2011 | 2001 Hyundai Santa Fe

1 Answer

2000 jeep cherokee 4.0......new water pump, radiator, thermostat, coolant system is full....now it is overheating again....hard starting and idles very rough...I think the catalytic converter may be...


the main symtom of a bad converter is. you can push pedal to floor and only go about 15 mph, if it is clogged up. the car will idle well but no power at all. the fist thing is overheating usually from misfiring spark plugs, and burns out the mechanisms inside. Catalytic converters are not designed to handle the heat of burning fuel; when fuel starts to burn in the converter, it can cause a great deal of damage to the converter and the rest of the exhaust system. One of the noticeable symptoms of overheating in the converter is a significant loss of power from the engine.

Jan 12, 2011 | 2000 Jeep Grand Cherokee

1 Answer

How do you know if your cat converter is going bad? Can you test for it?


There are two ways a converter can fail:
  • It can become clogged.
  • It can become poisoned.
There really is no "inspection port" for the consumer or mechanic to see an actual clog in a converter. Often, the only way to tell if a catalytic converter is malfunctioning (plugged) is to remove it and check the change in engine performance. When a clogged converter is suspected, some mechanics temporarily remove the O2 sensor from the exhaust pipe ahead of the catalytic converter and look for a change in performance.
A catalytic converter relies on receiving the proper mix of exhaust gases at the proper temperature. Any additives or malfunctions that cause the mixture or the temperature of the exhaust gases to change reduce the effectiveness and life of the catalytic converter. Leaded gasoline and the over-use of certain fuel additives can shorten the life of a catalytic converter.
A catalytic converter can also fail because of:
  • Bad exhaust valves on the engine
  • Fouled plugs causing unburned fuel to overheat the converter
­Sometimes you can tell that a converter is clogged because you don't go any faster when you push the gas pedal. Also, there usually is a noticeable drop in gas mileage associated with a clogged catalytic converter. A partially clogged converter often acts like an engine governor, limiting the actual RPMs to a fast idle. A totally clogged converter causes the engine to quit after a few minutes because of all the increased exhaust back pressure.
The catalytic converter, like the rest of the emissions system, typically has a warranty length that exceeds the term of the warranty for the rest of a typical U.S. automobile.
Here is a safety reminder: Do not park your car over tall grass or piles of dry leaves. Your car's perfectly running catalytic converter gets very hot -- enough to start fires! You can keep it running well by keeping the ignition system in top shape, to prevent any unburnt fuel from entering the catalytic converter.

Dec 11, 2010 | 1989 Dodge Dakota 2WD

1 Answer

I HAD A DIAGNOSTIC CHECK AND A CODE FOR DEFECTIVE CATALYTIC CONVERTER WAS THE RESULT. WHAT COULD BE CAUSING PROBLEM?


to rich fuel or oil consumption will clog the converter causeing hard starts loss of power poor economy hope this helps don

Jun 24, 2010 | 2005 Pontiac Grand Prix

1 Answer

1996 VW Jetta has an engine code of P1586 Engine


P0422 - Catalyst below threshold.

Catalytic converter is clogged or out of medium.

Replace it.


ACTUAL DIAGNOSTIC:

Fault Code Definition
Code P0422 indicates that the Bank 1 Main Catalytic Converter's emissions efficiency has fallen below the minimum allowable limit. This threshold is tracked by a Catalyst Monitoring Oxygen Sensor located on or near the outlet of the Catalytic Converter.

Symptoms

* Check Engine Light will illuminate
* In many cases, no abnormal symptoms may be noticed

Common Problems That Trigger the P0422 Code

* Defective Catalytic Converter
* Engine misfires have damaged the Catalytic Converter
* Internal engine damage resulting in high oil consumption and/or a leaking Head gasket has damaged the Catalytic Converter

Common Misdiagnoses

* Oxygen Sensors are replaced when the real problem is a damaged Catalyst
* Catalyst is replaced when the real problem is internal engine damage, which is producing elevated emissions levels
* Catalyst is replaced when a misfiring engine is the real problem



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Jul 30, 2009 | 1996 Volkswagen Passat

1 Answer

Engine has no horsepower


Sounds like the catalytic converter is clogged.



Please rate this a fixya

Feb 04, 2009 | 1992 Volkswagen Jetta

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