Question about 1991 Volkswagen Jetta

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I need to replace cat convert on 97 vw jetta

97 vw jetta would not go over 30mph. a auto shop put it on the diagnostic machine, it said oxygen sensor was the problem. they replaced it and i still could not go over 30mph. same auto shop checked into it and said i needed a cat convert which would cost another $600. for them to replace. can i buy a cat convert and install it myself? can you instruct me on how it is done?

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Sounds right they are expensive shops dont make a lot on the installs.

Posted on Nov 12, 2008

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On the 2004 honda crv along with code 1259vtec, l also have code 0420 which deal with the oxygen. If I upgrade the gas and put in lucas fuel injection cleaner, is it possible to correct the condition


NO--- code p0420 refers to the catalic converter system, bank 1 --efficiency below threshold===causes --cat converter, wiring-HO2S sensor 2
code p1159 refers to heated oxygen sensor (HO2S) -front circuit low voltage positive terminal===causes--wiring--HO2S--ECM programming---ECm

In both codes the heated oxygen sensor is mentioned so I would have it replaced before I spent money on a cat converter.

Feb 09, 2015 | 2004 Honda CR-V

1 Answer

Can please someone tell me where is my heated oxygen sensor on my 1999 VW Jetta Show picture if possible please


HO2 sensor 1 is on exhaust between engine and cat. converter, HO2 sensor 2 is after cat. converter

Jan 12, 2014 | Cars & Trucks

1 Answer

2002 toyota rav 4 / code po420 whats wrong ?


You have a cat converter ie eficiency code. Most shops are willing to sell you a cat converter and make a quick buck. However you can save some major money if you can find out what is wrong. A cat converter doesn't just go bad by itself something causes it to fail. Most likely a bad oxygen sensor or a dirty mass air flow sensor. I would replace the oxygen sensor in front before I replace converter. Reset check engine light and see if light comes back on. If it stays off you just save about 600 dollars. Oxygen sensors cause cat converters to go bad. So fix the cause first, then if you have to replace converter.

Oct 28, 2010 | 2002 Toyota RAV4

2 Answers

Had ignition coils replaced. enging light back on. wasd told now i have to replace cat conv. at 102,000, and had a/c replaced, timing belts and all other 105,000 services already! $3,000 later now I...


The cat is the primary part for cleaning up your emissions. Like any bad part on a car if it is not replaced in a timely manner it can lead to other parts going bad, such as the oxygen sensors. It can also negatively effect your gas mileage, because the computer determines fuel off of the oxygen sensors. The check engine light should also be on preventing you from passing inspection(if your area has an emissions inspection).

Sep 22, 2010 | 2003 Volkswagen Jetta TDI

1 Answer

Replace a o2 sensor on a 2005 vw jetta


You'll need an oxygen sensor tool (wrench) available at your auto parts. The size is standard for all VW 02 sensors.

Jun 11, 2010 | 2005 Volkswagen Jetta

1 Answer

P1176 2000 VW JETTA ALREADY CHANGED THE 02


17584/P1176/004470 - Bank1: O2 (Lambda) Correction Behind Catalyst: Control Limit Reached Possible Causes
  • Intake Air System leaking
  • Oxygen Sensor(s) and/or Oxygen Sensor Control faulty
Possible Solutions
  • Check Intake Air System for Leaks (False Air)
  • Check Oxygen Sensor(s) and/or Oxygen Sensor Control (all of them!)
This is the pre 02 sensor located before the catalytic converter.

May 10, 2010 | 2000 Volkswagen Jetta TDI

1 Answer

The check engine lamp on my vw jetta 3 is ''on'', i put a diagnostic reader on and it showed the following codes:P0422,P0411,P0300B,P0301B,P0302 and P00172B, what do they mean and how can i solve the...


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



Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.!@#$%

May 06, 2010 | 1996 Volkswagen Jetta

2 Answers

OXYGEN SENSOR ID


Only way to tell is count the number of wires coming from it. You also need to know if its the right or left bank and upstream or down stream. Upstream is before cat converters and by or in exhaust manifolds, down stream is behind converters and only measures converter effeciancy.

Mar 08, 2010 | 2001 Volkswagen Passat

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



Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.#$%^&

Jul 30, 2009 | 1996 Volkswagen Passat

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