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 Post subject: Help - Car wont start, but will after a few hours
PostPosted: Fri Jul 06, 2018 9:59 pm 
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Vehicle: MY01 GT

Posts: 349
Location: Sydney
Car didn't start last Saturday night. Then Sunday morning it started fine and no issues starting up all week, until this afternoon.
Waited 3 hours and it started up again.

Things I have checked.
1. Battery is fine as it cranks the car
2. Fuel pump comes on key ignition
3. No ECU codes
4. Checked and cleaned MAF, Cam & Crank sensors

Can anyone recommend anything that I can go over and check, just worried getting stranded somewhere when the family is in the car.

Thanks


Last edited by Ferdimage on Sat Jul 07, 2018 10:19 am, edited 2 times in total.

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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Fri Jul 06, 2018 10:36 pm 
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Vehicle: 98 N/A 5MT Foz - 82 BMW E28

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Location: Launceston, TAS
By no start do you mean it cranks over but won't start, or you turn the key and it doesn't crank at all?

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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Fri Jul 06, 2018 11:56 pm 
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Vehicle: MY01 GT

Posts: 349
Location: Sydney
epearce wrote:
By no start do you mean it cranks over but won't start, or you turn the key and it doesn't crank at all?


Sorry, should of mentioned that it does crank but wont fire up.


Last edited by Ferdimage on Sat Jul 07, 2018 10:18 am, edited 1 time in total.

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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 1:33 am 
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Vehicle: JDM SF STi Pure White

Posts: 148
Location: Germany
Maybe shagged coilpack? Or did the MY01 come with CoPs?


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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 10:26 am 
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Vehicle: 00 gt

Posts: 263
Location: HerveyBay
Sounds very similar to crank angle sensor that went on my suzuki once. I wouldn't have thought a clean would fix it.

This is my 2c of internet banter, i'm no mechanic


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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 12:01 pm 
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Vehicle: MY01 GT

Posts: 349
Location: Sydney
Though I would check the condition of the timing belt since its been over 7 years old.
Looks ok and there is still tension.

Checked my grounds and cleaned them with Electronic spray.
Fuses are all ok.
Checked my fuel filter , its clean without blockage.

Where else to look?


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Last edited by Ferdimage on Sat Jul 07, 2018 1:09 pm, edited 2 times in total.
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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 12:23 pm 
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I Say: Looks like I picked the wrong week to quit drinking.
Vehicle: 03XS Auto-Red;Mercedes Valente

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Location: Central Coast, NSW
I’m sorry, did you say your timing belt is over 7 years old?

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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 1:11 pm 
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Vehicle: MY01 GT

Posts: 349
Location: Sydney
JAK50N wrote:
I’m sorry, did you say your timing belt is over 7 years old?


Yes that old, but the car doesnt see much kms per year.

Would an old timing belt cause the car not to start also?


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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 1:22 pm 
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Vehicle: MY01 GT

Posts: 349
Location: Sydney
whitfoz wrote:
Sounds very similar to crank angle sensor that went on my suzuki once. I wouldn't have thought a clean would fix it.

This is my 2c of internet banter, i'm no mechanic


Yeah the crank angle sensor magnet was full of dirt, cleaned it up last Sunday, if its gone bad doesnt it pull up an ECU code?


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 Post subject: Re: Help - Car wont start, but will after a few hours
PostPosted: Sat Jul 07, 2018 4:06 pm 
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I Say: I am a Subarist!
Vehicle: 06 JDM STi Foz

Posts: 1970
Location: Sydney
No, not if it is intermittent.
Have the starting problems been related to hot starts?
Coolant temp sensor might be the problem if you are having to wait for the motor to cool.
Otherwise, find some second hand crank and cam sensors and swap for a test.

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