Question about 2000 Mazda Protege

1 Answer

Check engine light won't go away


Car with check engine light on. Diagnosis cat not up to par. replaced cat and ox sensor. check engine light back on. Now running rough at idle. Diagnosis now is egr valve, noticed low vacume. Any thaughts?

Posted by on

  • redlining Sep 24, 2008

    I didn't replace my cat yet, on my 2002 Protege ES (the car has 121K Miles on it) but I took it to auto zone and they pulled a P0401 code. Likely causes are the EGR Valve. I plan to buy a rebuilt one on ebay for $40 instead of paying Autozone or the dealer $150-$170 for a new one. It was running ridiculously rough when I came to a stop but only intermittently. (Maybe every 8th stop or so). I could also feel a bit of a ping during highway driving.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

I read it could be the mass air flow sensor and or faulty spark plugs. also be sure to check all the little vaccum hoses for cracks.

Posted on Sep 20, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Where is oxy.sensor


Usually in the exhaust pipe near the engine.
They don't usually cause a rough idle, and the check engine light should be on if you have a faulty sensor.

Mar 21, 2016 | Cars & Trucks

2 Answers

Check engine light flashing check engine soon smell of gas and not running smouth


Check engine light flashing means there is a bad misfire , it flashes to tell you your damaging your catalytic converter . You need to have it check , you don't won't to have to replace the catalytic converter . Can cost up to $1,000.00 . Flashing Check Engine Light CarMD

Feb 03, 2016 | 2004 Cadillac Deville

1 Answer

Running rough check engine light flashing


sounds like your cat converter is blocked. depends what providence your in but you could have a garage put a few holes in it and it should run fine. or pay big bucks for a new one.

Apr 07, 2013 | 1999 Ford Taurus

1 Answer

5.3 liter Chevy engine #1 Cylinder not firing at idle


My opinion...

Year? Miles?

There's no way I'd dive into a "HEAD GASKET"
diagnosis without pressure testing the cooling
system and (wet/dry) COMPRESSION testing
the whole engine...

Even if it is a "HEAD GASKET"... the entire engine
might be ready for a REFRESH... and tossing a new
Head gasket into a TIRED ENGINE not insubstantial
(a lot of wasted time & money)...

Come back with some compression numbers...

but don't bother with any of this if your engine oil has water in it.

(in my opinion)

Carnac the Magnificent

Apr 04, 2017 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

Had 3 codes come up for ox. sensor..po155-po151-po153 which one to replace and exactly where located?


it is the o2 sensor in front of the cat converter jack up truck and support under truck locate ur cat converter do this with truck cold cat can burn skin very easily same with exhaust pipes .when locate converter follow pipe forward towards engine look toward top of exhaust pipe will see a small tube with wire connected this is problem sensor check wiring and connector un plug and remove replace than reconnect

Oct 24, 2011 | 1999 Ford Explorer

1 Answer

I am hoping someone on here can help me with my problem...My check engine light came on my 2003 Chrysler 300 M special edition and also wouldn't start at times for up to 30-45 minutes at a time, and...


Have you had the battery changed since you had the car. Have that checked for a full charge and no dead cells. Always have the air-conditioning completely off when starting the car. The starter takes a lot of amps to turn over and having the AC on doesn't help.

and another reason is the code didn't clear out completely. this tool can help you test the code.

Jun 22, 2011 | 2003 Chrysler 300M

1 Answer

I have an audi 3.0l 2002 audi a4 avant quattro. I printed out a paper stating i could reset my oxygen sensor warning light ( check engine light ). I have torn my car apart looking for the letters oxs near...


The dealer has to "reflash" your 02 sensor light. On some Audi's, the dealer has to reset the O2 code first and if it comes on again, then they will need to replace the cat convertors.

Oct 12, 2010 | 2002 Audi A4

2 Answers

PO420 code-service engine light is on


P0420 Catalyst System Efficiency Below Threshold (Bank 1) first thing to do is go back to basics do a tune up (plugs) check the plug wires spray them with water or windex if you get a miss change them, run some fuel injector cleaner through it, don't just throw parts on it ,that is'nt cheap

Mar 24, 2010 | 2002 Nissan Altima

1 Answer

I have a 1996 saturn wagon. it failed on omissions for egr. ox sensor and catalyst. I had a new egr.. o2 sensor.. oxygen sesor before catalyst.. drove car on many different drive cycles and over 4-600...


You need to read the codes that your check engine light is showing. Go to Autozone or any place like that and they can read the codes for free. Throwing parts at a car doesn't fix it but finding the source of the problem and then repairing as necessary will allow for better results. Going off the check engine light being on can mean it is anything.

You have two O2 sensors on your car. One just after the head on the header. This is the O2 sensor that tells the PCM what the air/fuel is and the PCM can adjust accordingly. The one BEHIND the catalytic converter (or cat for short) does nothing but tell the PCM that the cat. is working properly. You may be changing the wrong O2 sensor. Also the EGR could be an electrical problem if that is the cause of the emissions failure.

So to review, find out the codes, post back with the codes and everything can go from there.

Feb 26, 2010 | 1996 Saturn SL

1 Answer

No power, Burning smell, Idles rough, engine light flashes


could be your cat converter
also check dist cap and rotor

Jan 29, 2010 | 2004 Chevrolet Cavalier

Not finding what you are looking for?
2000 Mazda Protege Logo

Related Topics:

299 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

69199 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22026 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6817 Answers

Are you a Mazda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...