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I have a 2005 1500 chevy silverado, would a broken manifold bolt, cause a bad cat code ?

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Negative to check your catalitic messure about two feet from the mofler and have some one presing the gas pedal and if you feel the air. The cataliticis good

Posted on Nov 26, 2013


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Posted on Jan 02, 2017

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SOURCE: 98 silverado codes po420,po430,po446

if the cat was pluggin you would see this as your going down the road it would not get to top speed .. They act up usually only run 40 top speed.

Posted on Apr 12, 2009

  • 52 Answers

SOURCE: My 2000 Chevy Silverado has trouble code P1133.

some cars do have recalls for bad codes being thrown check your dealership and if theres no problem they can block the code so your engine light will not come on for that code

Posted on Jun 30, 2009

  • 4088 Answers

SOURCE: broken bolts on exhaust manifold 6.0 liter chevy

These bolts usually have become very hard and brittle from the high temperatures. You will need carbide drill bits to drill into the bolt remains for insertion of an 'easy-out' tool. 'Penetrating oil' squirted into the threads may help remove the ends.

Posted on Oct 29, 2009

  • 22 Answers

SOURCE: keep getting cat code 420 replaced cat and o2

it sounds as if your air-mass meter is going bad. good luck :)

Posted on Dec 04, 2010

  • 3 Answers

SOURCE: I have a 2000 chevy

That was a common problem with the long/short bolt starters. The solution is the newer style starter with the 2 long bolts. I just replaced mine today. It already has the 2 long bolt style unit, but the new one came with a long bolt for those doing the conversion.

Posted on Jan 07, 2012

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Code p0135 on 2004 Chevy impala 3.4 lt v6. Which oxygen sensor is this

code p 0135 refers to heated oxygen sensor (HO2S) ) 1 bank 1, heater control---circuit malfunction====causes --fuse--wiring--HO2S--ECM
heated oxygen sensors are located in the exhaust manifold or exhaust pipe before the cat converter bank 1 is closest to the fire wall
use the proper sensor tube spanner as the wires are delicate and easily broken when removing or installing the sensor

Feb 11, 2017 | Cars & Trucks

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This code refers to a plugged catalytic converter.

Jul 04, 2008 | 2003 Chevrolet Silverado 1500

1 Answer

Does cleaning oxygen sensor clears p0154 fault

code p 0154 refers to heated oxygen sensor (HO2S) 1 bank 2 --no activity detected===causes ---wiring---HO2S--ECM
it also refers to oxygen sensor(O2S) 1 bank 2 no activity detected ===causes --- wiring )2S---ECM
the HO2S is the sensor in the manifold before the cat converter and the O2S is after the cat converter
they can be cleaned in vinegar but they would be showing signs of activity so in this case it is broken wires , bad connections of faulty sensors

Sep 15, 2016 | Cars & Trucks

1 Answer

Code p1133 is on chevy silveldo

Here's a link to your code. P1133 Chevrolet HO2S Insufficient Switching Bank 1 Sensor 1 Hi Frank,sounds like your oxygen sensor is bad,you didn't state your engine size,I will send a couple of firing orders so you will know where bank 1 is which is cylinder one which means the sensor is screwed into the exhaust manifold cause it's bank one,bank two would be at cat. converter.Here's the 4.8 engine firing order. Specifications Firing Order AutoZone com Here's the 5.3 engine. Specifications Firing Order AutoZone com Here's the 4.3 engine firing order. Specifications Firing Order AutoZone com

Feb 21, 2014 | 2003 Chevrolet Silverado 1500

1 Answer

Ford Escape EGR Blow out Transmission & Engine problems

we do 1 question at a time . not multiple problems

Feb 28, 2017 | 2001 Ford Escape

1 Answer

2000 silverado knock sensor issue

I think it not real probable that the cause of your knock sensor code is the result of bad gas. However, I suppose it IS possible. Most knock sensor codes are caused by engine mechanical problems like bad pully bearings, loose timing chains, broken valve springs, collapsed valve lifters, etc. that would cause a "knocking" or "tapping" in the engine.

The next most probable cause would be damaged knock sensor wiring. I have fixed many that have had damage from rodents getting into the engine compartment and chewing on the wires. Depending on which engine your Silverado is equipped with, the knock sensor could be mounted between the cylinder heads in the valley under the intake manifold. Mice like it under there.

Then again, it all depends on WHAT KIND of knock sensor code you are getting. For 2000 Silverado there are 3 possible knock sensor codes: P0325, P0327, P0332. The diagnostics (and possible causes) change depending on which code you have.

Jan 06, 2012 | 2000 Chevrolet Silverado 1500

1 Answer

How many oxygen sensors are on a 1999 chevy blazer?i found 3 one on each manifold before the cat and one after the cat. but the guys at the local auto parts store said that there are 4 total. am i missing...

if it has 2 cats then it has four sensors. i cat 3 sensors. i dought they all went bad. o2 sensor malfunction will not cause a cat efficiency belw threshold code. i would guess a baf cat on bank one.but if air pump was bad it might be poluted with carbon.try driving it hard for a bit. mabee it will clean up

May 30, 2010 | 1999 Chevrolet Blazer

1 Answer

Broken bolts on exhaust manifold 6.0 liter chevy

These bolts usually have become very hard and brittle from the high temperatures. You will need carbide drill bits to drill into the bolt remains for insertion of an 'easy-out' tool. 'Penetrating oil' squirted into the threads may help remove the ends.

Oct 28, 2009 | 2002 Chevrolet Silverado 1500HD

1 Answer

Accelarating from 25 to 40 MPH - a "rattle" in exhaust system

Had my y-pipe replaced (bad cats) and the bolts at the y-pipe flange where it attaches to the exhaust manifolds started to get loose and I go tthe viberating (tinning) noise. Took it in the first time and they tightened everything up but it seems it's doing it again so I'm going to try to fix on my own. Just wondering how much of a pain it's going to be to get to the bolts and what size...

Jun 06, 2009 | 2007 Chevrolet Silverado 1500 2WD

1 Answer

2003 chevy silverado codes

Most likely cause is the intake manifold gasket

Feb 03, 2009 | 2003 Chevrolet Silverado 1500

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