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Old 03-29-2018, 02:34 AM   #1
Riteshb
 
Drives: yairs 2010
Join Date: Jan 2018
Location: durban
Posts: 5
Low idle on Yaris 2010

I guy a ran a diagnostic test on my car and they is no error messages. Please can some help me with a low idle on my car it is sitting around 300 reeves. I think it supposed to be around 500?
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Old 03-31-2018, 12:47 PM   #2
SirDigby
 
Drives: 2007 yaris 3 door
Join Date: Sep 2015
Location: Denver, Colorado
Posts: 872
durban? where is that?
plugged air box filter? clean air filter? clean MAF? clean injectors?
if all else fails, there is an idle adjust screw.
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Old 03-31-2018, 03:33 PM   #3
ex-x-fire
 
Drives: 2010 yaris 3 door hatch
Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 185
Durban is in South Africa, Is this Yaris a diesel or gas version?
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Old 03-31-2018, 04:49 PM   #4
B.B._07
 
Drives: 07 5dr
Join Date: Nov 2015
Location: YYC
Posts: 119
For the 1.5L 1NZ-FE engine Yaris the official idle speeds are 550-650 for the M/T and 650-750 for the auto transmission. Rather unlikely that you have the 1.5L engine in ZA but it's a good baseline, and 300 rpm is way too low for any 4 cylinder engine. Most modern engines have electrically controlled throttle bodies so you can't adjust the idle up and down with cable tension like in the old cable operated TB's. If you're not getting and codes or pending codes I'd start with checking the air filer and cleaning the MAF sensor with brake cleaner to see if that improves things.
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Old 04-01-2018, 10:31 AM   #5
dogsridewith
 
Drives: 2007 2-door hatchback
Join Date: Jul 2016
Location: USAnotCA
Posts: 465
idle rpm revolutions per minute Toyota Yaris OBD II connector frequency multimeter

Maybe your idle is actually 600 rpm, and the 300 reported is due to the "diagnostic" missing a factor of 2. (I used the frequency setting of a multi-meter to find that my manual trans 1NZ-FE stays very close to 600 rpm idle once warm. The rpm pin on the OBD II connector--Toyota designates this "DLC3"--makes 2 pulses per engine revolution.)

Last edited by dogsridewith; 04-02-2018 at 03:33 PM.
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Old 04-03-2018, 02:10 AM   #6
Riteshb
 
Drives: yairs 2010
Join Date: Jan 2018
Location: durban
Posts: 5
How I know the idle is low is when I am driving the car switching of
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