Question about 1990 Cadillac SeVille

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Exhaust Converter- most likely clogged - 1990 Cadillac SeVille

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To find out for sure,Midas will check your whole exhaust for free,will crank it and raise it up and check from one end to the other.

Posted on Oct 28, 2012

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My 1995 cadillac eldorado was losing power like the car was running out of gas and now smell exhaust


When you say smell like exhaust, does it smell like rotten eggs (sulfur)? If so, could be catalytic converter clogged up.

Jul 03, 2016 | Cadillac Cars & Trucks

2 Answers

How do i check if catalic converter is clogged up on a 91 pontiac grand prix


temp gun. rear of converter should be hotter than front of converter.power loss is also a way of knowing your converter is plugged. car seams to be under stress load sound when running..

Jan 18, 2013 | 1995 Chevrolet Cavalier

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

Doesnt accelerate at 40 mph, loses power, jerks alot, and vaccum problem


check for a clogged catalytic converter in the exhaust system...that will cause the symtoms u r having...have a repair shop do a back pressure test on the exhaust system in front of the catalytic converter if is is more than 3psi u have a clogged converter

Jul 17, 2011 | 2002 Ford Ranger Regular Cab

1 Answer

Loss power wont start maybe exhaust or catltic ?


I had a chevrolet cavalier once that had a clogged exhaust. i was driving and the catalytic converter fell apart, and clogged the exhaust system. I completely lost power, and barely got home. Try getting your arm under the car, and hit the catalytic converter with your had, or a mallet. If it has fallen apart and failed, you should hear a clattering sound. Try inspecting the whole exhaust system, looking for bends in the exhaust pipes. When my catalytic converter failed, i also heard a hissing sound when it was running, and the engine was slightly overheating because of the restriction in the exhaust.
!!GOOD LUCK!!
Matt

Jun 16, 2011 | 1994 Mercedes-Benz S-Class

1 Answer

There is a clog in the exhaust system. I have had the catalytic converter replaced and still have the clog. I cannot accelerate without the car engine fluttering.


if the converter was of the honey comb style then its possible that a piece of the old converter has broken off and lodge in the exhaust downstream from the converter causing a blockage in the exhaust system.the exhaust will have to be inspected to find the blockage from either tapping the exhaust to hear a rattle or visual inspection of the inside of the exhaust.

Apr 20, 2011 | 2004 Mitsubishi Galant

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

3 Answers

My Dodge Dakota won't go above 30 miles an hour and acts like it is going to stop running when the gas tank gets below half full


may have a weak fuel pump, same happened on my dakota, was the fuel pump ,also change fuel filter same time

Dec 06, 2009 | 1995 Dodge Dakota

1 Answer

Starts then shuts down


You may have a clogged up exhaust, I had this problem on several occation that just about drove me crazy thinking it was electrical problem. Unbot the exhaust, and see what happens. The catalytic converter usually is the one that clogs up so you want to disconect the exhaust system before the catalytic converter.

Jun 30, 2009 | 1999 Chevrolet Malibu

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