Rough idle 2012 3.0 D4D auto

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T Dog
Newbie
Posts: 1
Joined: Sat Apr 11, 2020 8:51 am
Town: Winchester
Vehicle: 2012 Hilux 3.0 D4D auto
Real Name: Terence

Rough idle 2012 3.0 D4D auto

Post by T Dog »

Hi guys. We moved to the UK 3 years ago and after a rough ride in a MazdaCX 5, I’m back in my beloved Hilux. I have the 3.0 auto D4D which I look forward to getting into each day except for:

When she’s warm, she experiences rough idle when in drive or reverse. This is to say, when I arrive at a robot and stop, the engine idles irregularly like it is on the verge of stalling( it never does stall). If I slip it into neutral she returns to normal idle. She drives beautifully. Fuel consumption seems normal and other than the rough idle under load, I can’t fault her.

The following has been replaced:
Egr valve
Engine coolant temperature sensor
Maf sensor
Diaphram filter on map sensor
Throttle body

There are no apparent air leaks on the intake side. The fuel injectors have been removed and tested by Bosch approved workshop and all ok. It’s such and insignificant issue but a huge irritation.

Any thoughts or suggestions?
Baksteen87
Newbie
Posts: 5
Joined: Mon May 18, 2020 1:55 pm
Town: Pretoria
Vehicle: 2001 3.0 Toyota Hilux KZ-TE
Real Name: Winton

Re: Rough idle 2012 3.0 D4D auto

Post by Baksteen87 »

Hi Terence

Had a similar problem with idling and a few others but after cleaning my valve timing sensor on the diesel pump all my problems was sorted also had n diesel knock which was sorted after cleaning the plug
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dalkill
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1573
Joined: Wed Feb 13, 2008 8:34 am
Town: Cape TOwn
Vehicle: 2.4 GD6 SR D/C 4x4
Real Name: Shaakir

Re: Rough idle 2012 3.0 D4D auto

Post by dalkill »

Baksteen87 wrote: Wed May 20, 2020 9:02 pm valve timing sensor on the diesel pump
is that something different to the suction control valve?
I had my SCV replaced after machie plugged in laptop and saw some variances in the pressure or something like that.
No rough idling though. Just a precautionary thing.
2016 2.4GD6 SR D/C 4x4 (Oct 2022 - current) (Buraaq VI)
2007 d4d 3.0 D/C 4x4 (Mar 2016 - July 2022) (Buraaq V)
2003 Isuzu KB300 D/C 4x4 (May 2015 - Feb 2016) aka Buraaq IV
2000 hilux DC 2.7 4x4 (Jul 2011 - Sep 2012) aka Buraaq III
1999 RXI 20v (Nov 2009 - Jul 2011) aka Quicksilver
1990 hilux DC 2.2 4x4 (Jun 2008 - Jul 2011) aka Buraaq II
1997 corolla 160i GLE (Feb 2007 - Sep 2009) aka Green Goblin
1990 GLI twincam (still my fav rolla) (Oct 2005 - Mar 2007) aka Wit Blitz
Golf GTI 2.0 (temp insanity for 2months) (Jun 2005 - Aug 2005) aka A mistake
1993 hilux SC 2.2 4x4 (April 2003 - Sept 2005) aka Buraaq

TOYOTA IS MY LEWE
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dalkill
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1573
Joined: Wed Feb 13, 2008 8:34 am
Town: Cape TOwn
Vehicle: 2.4 GD6 SR D/C 4x4
Real Name: Shaakir

Re: Rough idle 2012 3.0 D4D auto

Post by dalkill »

T Dog wrote: Sat Apr 11, 2020 9:40 am If I slip it into neutral she returns to normal idle.
so from this I'm assuming it has something to do with auto box.
maybe the gearbox oils (is it some sort of viscous oils i'm geussing) that not good anymore and when heats up... it's trying to exgange the clutch :?:
2016 2.4GD6 SR D/C 4x4 (Oct 2022 - current) (Buraaq VI)
2007 d4d 3.0 D/C 4x4 (Mar 2016 - July 2022) (Buraaq V)
2003 Isuzu KB300 D/C 4x4 (May 2015 - Feb 2016) aka Buraaq IV
2000 hilux DC 2.7 4x4 (Jul 2011 - Sep 2012) aka Buraaq III
1999 RXI 20v (Nov 2009 - Jul 2011) aka Quicksilver
1990 hilux DC 2.2 4x4 (Jun 2008 - Jul 2011) aka Buraaq II
1997 corolla 160i GLE (Feb 2007 - Sep 2009) aka Green Goblin
1990 GLI twincam (still my fav rolla) (Oct 2005 - Mar 2007) aka Wit Blitz
Golf GTI 2.0 (temp insanity for 2months) (Jun 2005 - Aug 2005) aka A mistake
1993 hilux SC 2.2 4x4 (April 2003 - Sept 2005) aka Buraaq

TOYOTA IS MY LEWE
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