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Should i replace cat. if just makining thumping noise replaced one by manifold lately under rt still

A lil noisey

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Steering wheel vibrates thumping noise

At what speed do you feel the shake and does it only happen when you apply the brakes?

Posted on Mar 02, 2009

  • 14 Answers

SOURCE: thumping noise coming from front tire to passenger seat side

first off how many miles are on the car?does it only do it on bumps in the road?

Posted on Apr 22, 2009

  • 1244 Answers

SOURCE: rear end makin a scrubbin noise i replaced all

check the rear u-joints and also check for play in the pinion bearing and yoke on the rearend

Posted on Jan 21, 2010

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SOURCE: On a 91 ranger, can you replace the 2 cats with 1

not if you live in California, I dont know about other states.

Posted on Mar 08, 2010

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SOURCE: thumping noise on 2000 ford tarus i replaced the cv axle and wheel brg

Check the control arm bushings one is likely worn out.

Posted on Oct 04, 2012

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My car wont pass smog I have replaced exhaust manifold gask. cad.converter donut still wont pass what is left as far as exhaust replacement

did your replace the whole cat?, if not is the cat still good? If not your might have to replace that. the cat cuts 80% of the emissions.

Feb 23, 2016 | 1994 Pontiac Grand Am

1 Answer

Replaced my cat on neon ...still makes loud sound from that area in cabin. Mechanic feels it was a the cheap after market unit I purchased. Motor mounts were replaced but this sound is like a loud .

probably not the cat at all but a cracked flexible section in the exhaust pipe before the cat or a crack at the flange at the exhaust manifold
cats work regardless of the price and do not make noise either if fitted correctly
Pass on the mechanic and go to an accredited muffler/ exhaust fitting shop and get a diagnosis and a quote

Nov 09, 2015 | Cars & Trucks

1 Answer

Nissan online mechanic

code p 0432 is main cat converter bank 2 --efficiency below threshold ===causes -- cat converter---wiring heated oxygen sensor (HO2S ) in the bank 2 manifold before the cat converter
ave a compression test done to determine inlet valve seat insert loose
if you have a problem with it there should be a bit of a miss, or it should change with rpm
could be a cam lobe failing and the noise should change with rpm

Aug 07, 2017 | 2003 Nissan Maxima

1 Answer

Thumping noise on 2000 ford tarus i replaced the cv axle and wheel brg

Check the control arm bushings one is likely worn out.

Oct 04, 2012 | 2000 Ford Taurus

1 Answer

I have a thumping noise in the rear passenger side of my 96 lincoln continental. When I hit the slightest road imperfection, I hear a thumping. I have had the airbags replaced, and they are fine. My...

Have you checked your spare tire? That and the jack for your car can work their way loose.

The rear swaybar can make noise but a visual inspection when the airbags were done should have shown up. The tailpipe can hit the frame or your rear bumper may be loose. The gastank can be loose.

Another area is inside the rear seat. There is an extra seatbelt for rear passengers and the end can swing freely under the seat. Would like to know what you found.

Nov 14, 2009 | 1996 Lincoln Continental

1 Answer

Strange raddling noise from front passenger side

if the noise only happens when the vehicle is in motion...check the front suspension. place the jack under lower control arm ,then get a bar and lift up on the tire..ball joint issues are well known in blazers and cause this condition. if it does the rattle noise when its idling and to op temp--could be the cat converter causing the noise on pass side directly under passenger seat. when cold, smack the cat with rubber mallet and if any rattle is present, cat should be replaced so it dont cause further damage .hope that was helpful !!

Jul 07, 2009 | 1998 Chevrolet Blazer

1 Answer

Engine light

you have a cloged cat converter, or an exhaust leak near the manifold... if you rev it at idle and it sounds loud check under car for loudness, if your driving and your going about 30 and it sounds like 90, its the cat converter, replace is the only fix for converters

May 19, 2009 | 2004 Dodge Ram 1500

1 Answer

Running loud and thumping on floorboards

Your cat is on the passenger side of the vehicle,,, don't see how it's hitting the floor under your foot. Get another opinion. Could be a transmission mount or some other part that's bad, (even an exhaust pipe hanger, but those things would be transmitting thump, and would not be under your feet.If the shield on the cat is loose, I've used green wire ground clips made for grounding electrical junction boxes on home wiring systems (available at any home-depot in the electrical department for about $2.00 for a bag of about 15 clips) to re-attach the shield so it dosen't vibrate. It is not heavy enough to cause a thump though! Have someone else look at it!!!

Feb 26, 2009 | 1994 Jeep Cherokee

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