Question about 2003 Mazda 6

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Very loud squeal when accelerating and loss of power

When i accelerate the car makes a very loud squeal sound as i shift through the gears. if was driving ok but a lil rough. now its losing power and will barely go. it pulled codes for mass air flow sensor and two rear o2 sensors... i replaced the idler pulley and belt and still no change. help would b greatly appreciated.

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  • 20 Answers

How many miles? V6? Have you had a tune up(spark plugs changed..AT LEAST)? Should be changed about every 60,000 miles, according to the manual. Does your engine burn oil? Check your intake rubber tube, vac lines, pcv tube for crack. Hopefully your catalytic converter isn't the problem due to above...

Posted on Apr 24, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Starts good, idles good but bogs down when accelerating.

its the caburtor, it blocks the fuel from the pump and it also bogs out, factory fault you need to replace the caburator and bypass all the smog stuff, just install the o2 sensor into the air intak hose thats what i did

Posted on Feb 11, 2009

  • 24 Answers

SOURCE: I have 2004 mazda mvp

Have you replaced your PCV hose? If it gets sucked in it will cause a lot of problems.

Posted on Feb 25, 2009

  • 1 Answer

SOURCE: 2002 Mazda Protege acceleration problem

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.

Stephane

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Posted on May 27, 2009

  • 166 Answers

SOURCE: car hesitates at different rpms in all gears on my 2004 mazda 6

Hi, it might very well be the electronic engine control system that is malfunctioning, among other probable causes. I'm not there in person, but I can help you go through the most probable causes of this accleration-hesitation problem that you have. In fact, here's a very good, handy diagnostic article exactly on your issue, detailing the six most probable causes:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Hesitates_When_Accelerating.htm
Go through these to definitely solve your problem.
Brad

Posted on Jun 01, 2009

jblack891
  • 1 Answer

SOURCE: 2003 mazda protege idles rough and shakes, almost stalls

What about new spark plugs and wires?

Posted on Oct 02, 2012

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