Check Engine Light?

Tiny
WROBLEWSKI1991
  • MEMBER
  • 2000 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 111,000 MILES
I have owned my 2000 Mazda for about 18 months and shortly after buying it the check engine light came on. Long story short, I had both converters replaced, both O2 sensors, new spark plugs, and new coil pack. It was only after the new coil pack did the problem get solved - or so I thought. A few months ago the CEL came back on. I was told that one of the 02 sensors had failed (b/c I went with a cheap brand) and it was replaced with a Bosch. This did not solve the problem and the CEL would come on for a few days and off for a few days. The CEL has been on non-stop over the last couple weeks. Up until today, the car drove great. However, the idling became rough today and actually stalled out twice while waiting at a stop light. The car (when not idling) drives very nice. I have spent enough money on this car already and am at my breaking point!
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Monday, October 19th, 2009 AT 2:25 PM

80 Replies

Tiny
MATHIASO
  • MEMBER
You will need to scan and get the code(s)and get back to me, I'll help.
engine stalling could be Mass air flow sensor, or problem with the idle control valve. This guide will help us get the codes so we can fix it

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
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Monday, October 19th, 2009 AT 2:46 PM
Tiny
WROBLEWSKI1991
  • MEMBER
P0171 and P1569. Thanks.
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Monday, October 19th, 2009 AT 9:24 PM
Tiny
MATHIASO
  • MEMBER
Thank you for coming back with codes.
I was good at guessing for the mass air flow sensor :-)
P0171 is your mass air flow sensor.
Remove it and clean it with brake fluid or electronic cleaner , sometime it does the triks.
There could be a vacuum leak downstream of the MAF sensor, or the sensor is just faulty .
if the fuel filter have never been changed, it time to do it.

P1569 , this is a variable tumble control system solenoid valve.it is between the egr valve and egr boost sensor solenoid valve. it may be faulty.
there is also a variable tumble control system vacuum switch. check the ground at the switch and check the switch.
I have send the diagram in your email and it should be clear there.


https://www.2carpros.com/forum/automotive_pictures/46384_scan123_1.jpg

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Tuesday, October 20th, 2009 AT 3:50 PM
Tiny
NIKKIT585
  • MEMBER
  • 2000 MAZDA PROTEGE
Engine Performance problem
2000 Mazda Protege Automatic 147000 miles

Hi. My check engine light just came on. I got the car from a friend, who had let it sit for over a year. I've noticed that when I am idling at a light in drive that the car jerks forward a little after a few seconds. It's gotten worse since the light came on, and I have to either switch the car to park or keep the brakes pushed in all the way. Also, when the car lurches, there is a spike in the rvm meter, only up to 3 or so. Anyone have any idea what this is?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Get the computer scanned for OBD2 code/s at Autozone and comeback with it this is where we start.
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
NIKKIT585
  • MEMBER
I got the scan, and the code is P0401. EGR flow insufficient. Any idea what I need to have done?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Open the EGR valve and inspect for carbon all over and make sure if its vacuum operated its getting vacuum thru its solenoid
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
NIKKIT585
  • MEMBER
I got the EGR code fixed, but the check engine light came back on. This time the code is P0507, Idle Control System RPM High. Now what?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
KINGSX
  • MEMBER
  • 2000 MAZDA PROTEGE
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 14,200 MILES
Could a cracked intake hose trip a check engine light that reads 02 sensor bank 1 too lean?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
JACK42
  • EXPERT
Absolutely. There cant be any air leaks between the Mass Airflow Meter and the engine or the PCM will think it is lean
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
KINGSX
  • MEMBER
So, if i replace the intake hose, and reset the check engine light will this take care of this problem? And is there anything else that i can fix along with this problem? Like air filter, and cleaning MAF ? and if so, can i clean the MAF with carb cleaner?
Thank you for your time..


https://www.2carpros.com/forum/automotive_pictures/264294_Picture_017_1.jpg

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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
JACK42
  • EXPERT
Honestly if there is a crack in the hose big enough for you to notice it will lean out the engine. Air is getting in past the MAF, so the PCM doesnt know it is getting in there, but the o2 sensor is reading lean due to the leak. You shouldnt have to do anything besides replace the boot and clear the code. Do not use carb cleaner on the MAF, there are specific cleaners fore that. Carb cleaner will leave a residue that will cause more problems
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
LSMAN
  • MEMBER
I wonder if you are on the same boat as me. Look at the P0171 code.

If you have LX model, there was a recall on the MAF
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
67MUSTANG
  • MEMBER
  • 2000 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 42,860 MILES
My 2000 mazda protoge wont start after its been driven for a long distance untill it cools off
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Check engine light on

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis, finding out what's going on.
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
NIKKIT585
  • MEMBER
  • 2000 MAZDA PROTEGE
Engine Mechanical problem
2000 Mazda Protege 4 cyl Automatic 147763 miles

My check engine light came on awhile back and it was an EGR code. I got the EGR code fixed, but the check engine light came back on. This time the code is P0507, Idle Control System RPM High. Now what?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
JACK42
  • EXPERT
Could be caused by a sticky idle air control valve, vacuum leak or maybe even the computer. Try cleaning the Idle air control valve with carb cleaner and also spray around the intake area to see if there is any vacuum leaks, the engine rpm will change slightly when you spray one. What exactly did they do to fix the EGR problem?
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
NIKKIT585
  • MEMBER
There were a few hoses that were cracked. They replaced them and that fixed the EGR problem
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
JACK42
  • EXPERT
Need to check for vacuum leaks as advised.
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Friday, July 24th, 2020 AT 6:30 PM (Merged)
Tiny
VYZANIARIS
  • MEMBER
  • 2000 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • MANUAL
  • 148,000 MILES
I owe a Mazda Prot√ ©g√ © 2000 148,000 miles. My engine came on. I took it to the dealer. The dealer diagnosed it was my spark plugs, Coil wire and a cracked hose. The estimate to fix it was $600. Was it a fair price.
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Friday, July 24th, 2020 AT 6:30 PM (Merged)

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