Author Topic: Lumpy / erratic idle  (Read 7724 times)

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Offline Doc.

  • S Class
  • *
  • Posts: 20
  • Gender: Male
  • Body: Hatchback
  • Colour: Celestial Blue Mica (38J) Metallic
  • Engine: 1.6L
  • Fuel: Petrol
  • Model: Mazda 3
  • Transmission: Manual
  • Trim: Takara
  • Year: 2009
Lumpy / erratic idle
« Reply #15 on: January 24, 2017, 06:08:37 AM »
I have an 09 Takara and my car used to do this. At some point I ran into the P2187 MIL code . . .

I got hold of a Bluetooth OBD scan tool, and downloaded a few Apps to play with (Torque, Carista, MiniOBDII).

Had no warnings initially, but yesterday the 'Engine' light came on, and refused to go away.
I think the idle issue is getting worse, but that might just be the (ex) Fiat owner in me expecting the worst!

I'm getting that same fault code Dean (P2187 ~ 'System Too Lean at Idle')

I'm leaning towards the Intake issue now, having done a bit more research . . .

It's still covered by the basic warranty from the Dealer I bought it from, but if it's something basic/cheap/simple like a loose/leaking joint/hose, it's probably not worth the hassle of getting it back to them and being without it for a few days.

Thanks again for all the input on this, I'll let you know how I get on.

Mazda 3 Forums UK

Lumpy / erratic idle
« Reply #15 on: January 24, 2017, 06:08:37 AM »