Question about 2002 Mazda Protege
Common problems mazda protege 2003 check engine light
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Posted on Jan 02, 2017
I had the same problem and found that the air admission tube was badly cracked.
Since this let air enter the engine downstream of the mass airflow sensor it is not measured so the engine ECU don't send the proper amount of fuel to provide the right air/fuel mixture. At higher RPM, the vacuum in the tube is enough to close the crack and hide the problem.
I temporarly repaired it with duct tape until I get the part.
Posted on May 27, 2009
my 2001 mazda protege starts hard, idles low and high at various times (never normal) and it acts as though its going to stall at all times. sparks and wires are changed no help, changed air filter no help. any idea on what to do?
Posted on Nov 26, 2009
most vehicles check light comes on when you have a bad oxygen censor or maybe because it is fuel injected, it has a dirty or faulty injector or something of that sort if you take it to an automotive place they will test it on a handheld computer for you and most of the time its free i know it is at an autozone! goodluck!
Posted on Dec 18, 2009
Testimonial: "Thank you very much this was very helpful."
Check the air inlet boot going from the air filter to the intake for rips or holes. If rips exist, this would allow air to bypass the filter and mass air flow sensor and will lead to a check engine light appearing. The code would read "too lean, bank 1." If this problem is allowed to continue for long periods of time, the EGR ports will have to be cleaned out and maybe even the intake.
Posted on Apr 03, 2010
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