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I had timing belt, head gasket and catalytic converter replaced one week ago and now service engine light is flashing and truck is shaking.

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  • Cars & Trucks Master
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Got to see wich cylinder is misfiring get it scan when the light flash its to warn you that you might damaged your cathalytic converter

Posted on Apr 02, 2015

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  • Cars & Trucks Master
  • 372 Answers

If check engine light is flashing it means pull over and stop driving, you are damaging your engine. I would take it back to whomever did the work immediately

Posted on Apr 02, 2015

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  • Contributor
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Have it scanned , was the computer cleared after all this work? And or have you driven this vehicle more than 40 miles. As it usually takes about 40 miles for the light to come back on. I would scan it and if there is more than one code. Check the first code clear and drive. As if one thing being wrong/bad part would make the computer to try and correct air/fuel mix and throw more codes.

Posted on Apr 02, 2015

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Posted on Jan 02, 2017

freetek
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SOURCE: 2002 chevy malibu catalytic converter

You probably have way too much unburned fuel in your exhaust system (how's your mileage?) or possibly a failed oxygen sensor that is giving false information to the computer.

Posted on Feb 20, 2009

landsend
  • 1066 Answers

SOURCE: engine light keeps coming on, had catalytic converter replaced 2x

a bad or disconnected oxygen sensor will make the engine run rich.
How about a clogged air filter? 

Posted on Mar 27, 2009

  • 14036 Answers

SOURCE: Catalytic converter is bad on 1995 Subaru Legacy L Wagon

dearship parts are high.you can buy a factory catalytic converter or universal converter cheaper at auto parts place.they basic the same parts the.dealership has same catalytic converter.they put their price and labor rate charge an hour your pocket book will be empty.i have used universal catalytic converter.had no problem with it.the only difference is universal converter body a little shorter.but has same lengh as factory.if check engine is coming on you cant turn it off .if computer showing you a code.you could have a misfire causing rich exhaust emission.that can ruin a catalytic converter have it scan.dealership charge you about $130.00 .you can have it scan at advance auto or auto zone.to see what pcm code is.it could be oxygen sensor somethinh minor.

Posted on Jul 12, 2009

  • 2 Answers

SOURCE: 2004 VW Jetta 1.8T

Loss of power? How many miles? Plug, plug wire or ignition coil(if seperate poles) would be my guess.

Posted on Jul 13, 2009

  • 6982 Answers

SOURCE: Engine shaking after timing belt replaced

No repair should only last three weeks...don't touch anything and have the shop that did the work come and get it. I have lots of ideas but it will need to be checked over to verify them. Rather than comment on the "maybe" of this, have them check it out. Any reputable shop will be more than willing to do what's needed...Bad jobs ruin that reputation!

Posted on Sep 16, 2009

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1 Answer

2007 Hyundai Accent SE 1.6L Flashing check engine light and no power. Automatic transmission, car doesn't want to shift.


Injectors, compression, several engine mechanical issues ( burnt valves, weak or broken valve springs, piston rings, head gaskets, cracked block or heads ) and bad ECM drivers for injectors/coil packs can all cause engine misfires. The flashing light means possible catalytic converter damage .

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My car tried to shut off going down the highway. Then it was shaking mildly. engine light came on flashing.This is a 1999 Dodge Stratus- 4cyl.-2.7 engine


The flashing engine light means the miss is bad enough to cause damage to the catalytic converter. The check engine light does not involve engine oil.
Are you saying the timing belt is not turning the cam ?

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What would be causing what sulfur smelling exhaust smoke?


The Smell is-- Sulfur Dioxide-- from an over heated
Exhaust Converter

Yes-- it will be ruined soon

White Smoke all the time, could be a head gasket

It could also be-- lots of fuel-- that is overheating the converter

Have to look at fuel trim on scan tool data

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Check engine light flashing and shakiness in car accompanied with burning smell.


The check engine light flashing is a pretty much universal sign that you have a misfire that is bad enough that a lot of raw, unburned fuel is being dumped in to the Catalytic Converter, to the point that it could be ruined if the problem is not taken care of very quickly.

Feb 24, 2014 | 2002 Ford Ranger

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I have a 2005 chevy cobalt, and it has been driving fine until a couple of months ago. One day it just started shaking and my engine light started to flash on and off. I got it checked out and they said it...


It sounds like the catalytic converter might have come loose causing a loud exhaust leak. Did they repair the problem that caused the converter to plug up like a defective oxygen sensor or coil pack?

Aug 19, 2013 | 2005 Chevrolet Cobalt

1 Answer

Check engine is flashing. Checked water level and found it very low. Added water but no coolant. Still flashing. Will lack of coolant cause Check Engine light to flash ?


No. a flashing check engine light means that there is a serious possibility that the catalytic converter is in danger of getting damaged. If you are losing coolant (and i am guessing that your engine is overheating) you most likely have a blown head gasket or a cracked cylinder head. And because of that you are getting a large quantity of coolant on the exhaust system, which can ultimately damage the catalytic converter.

May 31, 2011 | 1999 Mazda Millenia

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I have a mazda protege 2003 and my car stinks like rotten eggs when i put on the gas and on top of that, my engine light is blinking and my car shakes when i stop at a red light!


i have a 2003 mazda protege. this is the third time my check engine light has come on. the first time the car started to shake when i stopped at a light and the check engine light came on. i had a readout done and it said misfire. i took it to a garage and they changed my spark plugs and wires. 2 weeks later it came on again and my car started to shake whenever i stopped. readout said misfire. they fixed the coils. it has been 2 weeks since then and my car started shaking again whenever i stop and the light came on. what could possibly be wrong with it?

Feb 06, 2010 | 2003 Mazda Protege

1 Answer

The only fault code on 2001 kia sephia is P0422, catylist threshold low.... car ran for 2 weeks fine after new fuel pump, and then just died like first time.... 126 thousnd miles and plenty of fuel, fuel...


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.$%@#

Jan 24, 2010 | 2001 Kia Sephia

1 Answer

Engine using oil. No sign of leaking. Catalytic converter replaced 13 months ago, now needs replaced. Told need new engine. What is causing the catalylic converter to plug?


Was a leak down test performed on the motor?This will determine if the oil loss is due to bad rings or a head gasket.A head gasket can be repaired,rings will require an overhaul or new motor.Have checked the coolant for oil contamination?

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