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2005 mazda 3 rough idle

Rough idle

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4 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 16 Answers

SOURCE: idles rough when at stop lights etc.

Depending on vehicle mileage, you are likely ready for a tuneup that would include new

1. Spark plugs
2. Spark plug wires
3. ignition cap/rotor, if used
4. new serpentine belt(s)
5. Fuel system cleaner such as Chevron Techron or Regane
6. New timing chain/belt if mileage warrants--check owner's manual

Barring serious mechanical issues, the above items should eliminate the idling problem OR make it much easier for a shop to trace the real problem using a OBDII Scan Tool.

Posted on Jan 07, 2010

  • 275 Answers

SOURCE: 2003 Mazda Tribute will start, idle rough for a

check the fuel filter air filter and vacuume lines if they all good make sure the spark plugs are making a bright blue spark

Posted on Jan 20, 2010

  • 2 Answers

SOURCE: 2005 Mazda 3 idles rough at stop light and sometimes dies

My daughter has a 2005 Mazda 6i 2.3L and it idled rough/stall/ shift hard fom 1st to 2nd. After replacing many parts: O2 sensors ,purge valve,3way valves, plugs, and checking all hoses and no cure I discovered on another site that the Pcv valve and hose are behind the air intake. you can get to it from underneath. It runs from the bottom of the manifold to the top and I had to **** the hose at the top to pull it off the nipple. I removed the throttle body and hose, the two shuttle valves and unbolted the starter and moved it out of the way. Lube the hose well and may need a large screw driver to help push it on and then work the clamp on. You can stand up and reach under the manifold and work it on. It is exasperating but can be done. It beats taking the whole manifold off. The old hose had a 2 and half inch **** /crack in it. It has a slip cover over it to insulate from the engine and helps seal the crack at times which explains all the erratic behavior. I thought one of the other hoses up top was the pcv but was wrong. The hose $15. Bad engineering as far as location. This cured the problem. The local Dealer told me they figured out how to do it without removing the manifold and shared the info with me.Car runs great now and shifts smoothely. This task is for shade tree mechanics that like to do this stuff. Be sure and not break the top nipple, it swivels a little and appears to be made out nylon etc.

Posted on Dec 15, 2010

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1 Answer

What does code P1277 really mean (in layman terms)?

Possible causes
- Faulty Fuel Injector
- Faulty Fuel Injector Interface Module
- Fuel Injector harness is open or shorted
- Fuel Injector circuit poor electrical connection

Jul 30, 2015 | 2005 Mazda 3

1 Answer

I have a2004 mazda 3 s when the a/c is on the idle gets rough when the compressor cycles on and off. A/c works intermittenly,can feel the idle fluctuate even while at speed and slightly accelerating.

when the ac compressor comes on, the engine should rev up a little to compensate for the strain of the compressor and if this is not happening, then you would get that rough idle. Some engines have a valve control to let in a little air into the engine intake so that it revs a little. I think this is called an AC step up.

May 29, 2012 | 2004 Mazda 3

1 Answer

Had a question bout my mazda rx8 I was driving it one night it was running fine the next day went out and it won't turn over it takes awhile bit it finally starts and idles real rough and you give it...

Too many possibilities

Won't turn over is one problem -battery,cables,grounds,

Idles rough-- vacuum leaks,spark plugs never replaced,
egr valve etc

Worn O2 Sensors
Dirty MAF Sensor
Old Fuel Filter

You have to go into a lot of technical detail & history
on your vehicle, for us to even guess.

May 23, 2011 | 2005 Mazda RX-8

1 Answer

2005 Mazda 3 idles rough at stop light and sometimes dies

The ignition coil should be fine at that mileage. If spark plugs do not fix it suspect a faulty MAF sensor. If the MAF is sending a bad signal it will affect with the idle as the ecu is trying to compensate for the MAF.

Apr 22, 2009 | 2005 Mazda 3

2 Answers

2005 Mazda 3 idles rough at stop light and sometimes dies

The problem is a faulty solenoid in the vapor recovery system. The solenoid is sticking open and allowing fumes from expansion of fuel in the fuel tank to enter the air intake and smother the engine. This is how the Mazda service tech explained it to me. It is a known problem on the Mazda 3 in various trims which Mazda refuses to acknowledge. Usually the check engine light comes on and the engine diag code reads mass airflow sensor, which is incorrect. I dealt with this for 6 months on my wife's 2005 Mazda 3i before the dealership figured it out. My cousin bought a 2007 Mazda Speed 3 which developed the same problem after a few months and was cured by the same fix.

Jan 10, 2009 | 2005 Mazda 3

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