Author Topic: Fast idle on first start  (Read 814 times)

Offline WIZZ

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  • Body: SUV
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  • Engine: 2.2L 150ps
  • Fuel: Diesel
  • Model Grade: SE-L
  • Transmission: Automatic
  • Year: 2017
Fast idle on first start
« on: May 24, 2018, 12:49:29 pm »
Anyone else had this?

Offline Deeps

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  • Located 20mins NW of Stuttgart, Germany
  • Body: SUV
  • Colour: Crystal White Pearlescent
  • Engine: 2.2L 150ps
  • Fuel: Diesel
  • Model Grade: SE-Lux
  • Transmission: Automatic
  • Year: 2015
Re: Fast idle on first start
« Reply #1 on: May 24, 2018, 12:54:36 pm »
Anyone else had this?

Yes, I suspect just about everyone of us diesel owners. It's quite normal so nothing to panic about.
« Last Edit: May 24, 2018, 01:34:16 pm by Deeps »
Mazda CX-5 Exclusive Line 2.2D (150PS) 6AT AWD tugging a 2016 Hymer Eriba Troll 542 Caravan (1300kg).

Offline WIZZ

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  • Posts: 12
  • I NEED TO UPDATE MY SIGNATURE!!!
  • Body: SUV
  • Colour: Arctic White
  • Engine: 2.2L 150ps
  • Fuel: Diesel
  • Model Grade: SE-L
  • Transmission: Automatic
  • Year: 2017
Re: Fast idle on first start
« Reply #2 on: May 24, 2018, 01:16:12 pm »
Yeh, with you, but I've had the car a year & it has just started doing it ?? petrol engine cold start, for sure.

Offline Deeps

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  • Posts: 395
  • Located 20mins NW of Stuttgart, Germany
  • Body: SUV
  • Colour: Crystal White Pearlescent
  • Engine: 2.2L 150ps
  • Fuel: Diesel
  • Model Grade: SE-Lux
  • Transmission: Automatic
  • Year: 2015
Re: Fast idle on first start
« Reply #3 on: May 24, 2018, 01:39:33 pm »
On some days mine fast idles quite noticeably whilst on other days not. I suspect it's dependent upon several factors e.g. temperature and humidity driven by the requirement to meet strict exhaust emissions and hence get the engine up and running optimally in as short a time as possible. Only Mazda know for sure but as said earlier, it's a well known and documented event.
Mazda CX-5 Exclusive Line 2.2D (150PS) 6AT AWD tugging a 2016 Hymer Eriba Troll 542 Caravan (1300kg).

Offline twabrigs

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  • Engine: 2.2L 175ps
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  • Transmission: Manual
  • Year: 2013
Re: Fast idle on first start
« Reply #4 on: May 24, 2018, 03:07:01 pm »
As Deeps says it's perfectly normal, but only happens under some obscure combination of circumstances possibly involving phases of the moon.

Seems odd you've never had it up to now though.

Offline howardsathome

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  • Body: SUV
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  • Engine: 2.2L 150ps
  • Fuel: Diesel
  • Model Grade: SE-L
  • Transmission: Manual
  • Year: 2013
Re: Fast idle on first start
« Reply #5 on: May 24, 2018, 04:31:40 pm »
My diesel has always done this over the last 5 years, there does not seem to be any 'normal' conditions that cause it to not occur. This week (cold first thing then warmer later), it starts up fast when backing out of the garage and is back on normal tick-over by the time the doors have closed.

Offline Bert321

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  • Model Grade: SE-L Nav
  • Transmission: Automatic
  • Year: 2017
Re: Fast idle on first start
« Reply #6 on: May 25, 2018, 12:28:24 pm »
 Mine does it most often on cold starts when the ambient air temp is in the low to mid teens.

Offline Anchorman

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  • Year: 2018
Re: Fast idle on first start
« Reply #7 on: June 08, 2018, 06:53:19 am »
I can’t believe this question gets asked so often. I have this pdf pinned on the U.K. CX-5 owners Facebook page. It shows all the conditions that raise the idle speed.
Eagles may soar high but weasels don't get sucked into jet engines.......

Offline BigAl

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  • A CX5, a CX500B and a CX650C. Too CX'y...
  • Body: SUV AWD
  • Colour: Soul Red Metallic
  • Engine: 2.2L 175ps
  • Fuel: Diesel
  • Model Grade: Sport Nav
  • Transmission: Manual
  • Year: 2015
Re: Fast idle on first start
« Reply #8 on: June 11, 2018, 12:13:35 pm »
U.K. CX-5 owners Facebook page.

Hadn't seen that group, will be over shortly...

Alan

Offline Anchorman

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  • Year: 2018
Re: Fast idle on first start
« Reply #9 on: June 15, 2018, 10:46:28 pm »
U.K. CX-5 owners Facebook page.

Hadn't seen that group, will be over shortly...

Alan

You’ll be made most welcome.
Eagles may soar high but weasels don't get sucked into jet engines.......

Mazda CX-5 Forums

Re: Fast idle on first start
« Reply #9 on: June 15, 2018, 10:46:28 pm »