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Old 05-10-2016, 02:24 PM   #1
Darkhorse6
 
Drives: 08 5dr HB
Join Date: Aug 2013
Location: Canada
Posts: 28
Random No Start Issue

Hi All,

I've having a random starting issue. Every now and again, I will start my 08 yaris 1.5 mt and it will either long crank or crank, fire and immediately stall.

Normally on the next start up the car is fine. Even if I shut the car off and restart it cranks and fires normally.

Today I had about a 30 minute episode where the car would crank, fire for a split second and then stall. The weather is about 20c/68f today, the car had been parked for about 30 mins. After many attempts of giving it gas and not giving it gas, the car finally fired and ran and idled perfectly fine.

Any ideas on what this could be? Could it be the crank position sensor?
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Old 05-10-2016, 02:25 PM   #2
Darkhorse6
 
Drives: 08 5dr HB
Join Date: Aug 2013
Location: Canada
Posts: 28
I should also mention that I have 3/4 of a tank of gas, 87 octane, which I bought at Shell station in town where I have previously bought gas.
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Old 05-10-2016, 03:16 PM   #3
brushforhire
 
Drives: 07 HB YARIS, 15 JUKE, 00 TUNDR
Join Date: Mar 2007
Location: Johnstown, PA
Posts: 320
Are there any check engine lights?
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Old 05-10-2016, 03:46 PM   #4
Darkhorse6
 
Drives: 08 5dr HB
Join Date: Aug 2013
Location: Canada
Posts: 28
No check engine lights unfortunately
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Old 05-10-2016, 06:33 PM   #5
CTScott
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Drives: 09 5dr LB, 2x 08 3dr LB
Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
Possibility of the fuel filter being clogged. That will make it hard to start, but then run fine once started.
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Old 05-10-2016, 07:07 PM   #6
brushforhire
 
Drives: 07 HB YARIS, 15 JUKE, 00 TUNDR
Join Date: Mar 2007
Location: Johnstown, PA
Posts: 320
Do you let your gas get really low before you fill up? I am thinking CTScott is dead on. I know we had a few customers who got some residue in the tank, and the pump would suck it up to the little bag looking filter on the bottom of the pump, and it would deprive the engine of fuel.
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Old 05-11-2016, 12:46 AM   #7
froger
 
Drives: 08 yaris 1.8 dual vvti 5sp
Join Date: Feb 2010
Location: Calgary AB Canada
Posts: 38
Hello , if your car is Canadian ,A 2008 Canadian model came with a immobilizer, It kinda sounds like you are having an immobilizer issue.Sometimes when you start the car too fast, the signal from the immobilizer ecu doesn't get received by the engine ecu, so then the engine ecu locks you out (cranks but no start),after the second attempt or a long cranking eventually the signal is received and then the engine starts.The other issue with the immobilizer is if you leave the keys in the ignition too long the immobilizer ecu goes to sleep ,then you won't be able to start the car at all ,unless you pull the keys out of the car and wait about a minute before starting again .Also if you have an aftermarket engine remote start ,I would look to see if that isn't messing with the immobilizer ecu,had it where it burnt out an ecu ,back feed through the immobilizer communication lines.
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