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Rough idle EGR valve question ! 2002 mazda protege 5 2.0

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Rough idle EGR valve question ! 2002 mazda protege 5 2.0

  #1  
Old 09-05-2017, 07:30 PM
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Join Date: Aug 2017
Location: New Brunswick
Posts: 3
Default Rough idle EGR valve question ! 2002 mazda protege 5 2.0

I recently had a rough idle and such when car is warm and fit into the common problem of having the egr valve clogged up.so I replaced the egr and coil's /plugs/ wires as well. The problem is the check engine light was still on (P0300) after all the new parts and still had the rough idle. Today I was heading home from work and noticed the check engine light went out and the idle was smoother at staying around 800 RPMS. I was excited !but then the same night heading to my girlfriends the check engine light came back on and the idle was rough but almost smoothed out a couple times. What is going on ??anybody have a slightest clue?

Much appreciated
 
  #2  
Old 09-28-2017, 10:06 PM
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Join Date: Sep 2017
Location: Woodstock, Georgia
Posts: 6
Default

Kinda the same problem here but with a p0303. Any modifications done or is the car stock?
 
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