FJ cruiser intermittent starting problem

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Aug 26, 2021
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byron bay australia
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I have a 2014 FJ 4wd auto. Recently it has developed an intermittent starting problem. Occasionally, maybe once a week it will crank over but not start.

I’ve tried both my keys when this happens and it makes no difference, so I have ruled out a key fob issue. The problem also happens whether it is in Park or neutral so I don’t think it is the gear position sensor.

If I leave it for a minute or two sometimes it starts again. Other times I come back in an hour or so and it will start. The vehicle runs perfectly once it’s going and it is not showing any warning lights on the dash.

I’m wondering if anybody has had a similar problem, which I can use as a starting point when trying to diagnose. I’m thinking it could either be fuel pump, crank sensor, fuel filter, or any number of other things.

The issue started a few months ago and has got progressively more frequent. I’m supercharged and running a non-standard fuel pump by the way.

Thanks in advance.
 
Joined
Mar 10, 2005
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CT
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Almost sounds like vapor lock.

Have you checked to see if you are getting spark during no start times?
 
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