P5 Rough idle after warmed up.

[CTpro5]

My 02 P5 with 55K miles start acting up lately. every morning after warmed up, the idle will drop to 200 RPM close to stalling. The rough idle will last about 5 mins, then everythings back to normal for the rest of the day.

I have Put in NEW NGK Plugs, and seafoam 3 months ago. Now i will like to change the Spark plug wires, and the Canadian REVISED EGR Valve.

Anyone know what website i can order the Revised Canadian EGR valve?? also what else i'm missing to replace, that can cause that idle problem.

Thanks

 

[Tzar177]

clean your IAC

 

[protegericky]

how would you go about cleaning the IAC
with water? compressed air?

 

[MazdaSpeeder]

I believe a carbon cleaner like Brakleen will work fine. If new wires and cleaning the IAC doesn't solve it, change your coil packs next.

 

[protegericky]

thanks for the info (thumb)

 

[CTpro5]

CEL just came on. code P0300 random engine misfire.
Just changed Spark plugs, and wires. still no help. So next will be coil packs, how to clean Idle control valve?? and then the EGR .

 

[CTpro5]

Updates: Changed Plugs,wires,coils,maf sensor, cleaned Idle control valve, EGR is next. what else did i missed??

 

[CTpro5]

replaced MAF too. idle's still rough. Also now when i try to restart the engine when warm, it cranks for like 10 seconds to get it to start. Could it be my 02 sensors?? or EGR??

also i noticed when i let-go of the gas pedal while driving, the rpm will slowly drop,but when it gets to 1000 rpm, it will bounce to 1500 rpm by itself.

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[CTpro5]

idle back to normal. It was the EGR valve stuck open. thanks all the help.

 

[georgecastaneda]

hey guys. when the EGR is no good does the ECL comes on?

thanks

 

[georgecastaneda]

idle back to normal. It was the EGR valve stuck open. thanks all the help.

did u clean it or replace it?

 

[CTpro5]

I cleaned with Brake cleaner, I also have the NEW revised EGR on hand, will install next month.

 

[dfb]

02 sensors?

 

[georgecastaneda]

well i did the same thing but with the IAC and its working better now. i just gotta get the EGR but there is two different type which is the canadian and the american. which one should be better for my car?

 

[Mixerdriver]

where is the egr located? I need to check mine

 

[Tommyr]

where is the egr located? I need to check mine

If you look through the how to forums there are a few detailed descriptions with pictures!