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2007 Cruiser wont start when its hot outside

 
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Old 27 Jul 2017, 07:14 am
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Exclamation 2007 Cruiser wont start when its hot outside

Hi everyone, i have a real brain teaser here. I have a 2007 2.4L non turbo Cruiser. When its hot outside, i will not crank at all. everything powers up as normal, but there is nothing going on under the hood. The battery and Starter have tested good. As i said, it only happens when its been sitting in the sun all day (usually at work). If it rains, or it sits overnight in my carport, it starts lie there is no issue. Once its been sitting in the sun, it can take 10-15 minutes and then it'll crank. and once it cranks that first time, it cranks every time UNTIL the following day it sits in the sun at work! Weirdest crap ever. Ive seen a few people ask about this, with no real answer. Thanks for any help you can throw my way!
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Old 27 Jul 2017, 09:42 am
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Default Re: 2007 Cruiser wont start when its hot outside

First I would suggest checking a group of ground wires going to the inside drivers side fender under the hood.. The wire contacts get corroded inside and it can look good on the outside. Post if this helps or not.

Also does the red little security light stay on when it happens?
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Last edited by ptcruisersteve; 27 Jul 2017 at 09:44 am.
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Old 27 Jul 2017, 11:03 am
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Default Re: 2007 Cruiser wont start when its hot outside

This could still be a battery problem...the heat from hitting the hood all day can make it hotter. Try parking in the shade if you can or put a cover on the car.
You can test this by putting a tarp or 2 over the hood & see if it works.
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Old 27 Jul 2017, 11:55 am
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Default Re: 2007 Cruiser wont start when its hot outside

Probably not the case with a modern car and in-tank fuel pump, but I have had similar problems with vapor lock. The fuel boils and the lines can't pressurize.
That can trigger the ASD in some cars - my '82 efi Imperial was notorious for this - it had an aftermarket out of tank pump and it was brutal to start sometimes.
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Old 27 Jul 2017, 01:44 pm
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Default Re: 2007 Cruiser wont start when its hot outside

Sounds like some sort of thermal expansion problem. Maybe the ignition switch or TIPM. I'd put a windshield shade in it and make sure it shades the steering column, in order to test the ignition switch.
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Old 27 Jul 2017, 06:02 pm
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Default Re: 2007 Cruiser wont start when its hot outside

I was thinking possibly the ignition switch also. I found I get zero volts to the com wire on the starter. But the next time I turn the key, it may crank or partially crank, then I lose voltage again
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Old 27 Jul 2017, 06:59 pm
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Default Re: 2007 Cruiser wont start when its hot outside

Are you planning to answer the questions in the previous posts?
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