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Hi Matt,
I follow your posts when you put in your advice to other tabs here on the board and for this to get you down this hard, it must be a very elusive problem!
The idea I would like to put forth is this is a no start problem related to heat soak situations since it’s the only time it keeps doing it.
In my opinion to keep hammering on the ECT sensor isn’t so logical at this point. The ECT is really only a fuel trim system and not a fuel shut down system.
I want to say that the electrics on any system are heat sensitive. In this case it raises its ugly head after shutdown or during the restarting or during cranking phases.
Something is failing to give a signal or receive a signal that the engine is trying to start.
You don’t mention any flooding of the cylinders and what the ignition is doing right then?
To cut to the chase and reiterate the fact that something has stop talking to another component.
I will have to contend that these newer cars use Crank Position Sensors that are known in the 240s to fail.
Failure of these things, in many cases, we’re not catastrophic in nature and that, in itself, raises its ugliness during this startup scenario!
I know nothing about FWD and AWD cars or the engines and how many cylinders they have or don’t have. But I do know they all have sparking coils and paraphernalia leading up to do just the same darn things!
Your car won’t start hot and so can our 240s!
I would be scoping out putting in one of those Crank sensors, if you haven’t already, or combing over the wiring connectors since this is a 22-23 year old car!
If I had an engine with multiple coils, with no spark wires or rotor button, that would still leave me looking for a distribution system, that can have flaws!
A whole set of bad coils is unlikely but one power supply or input line is all you need!
Oh know, here comes a story!
When I was a teenager, I had an Italian motorcycle that used the old type brush DC generator.
It would quit charging when it got temperature or vibration.
Took it to the shop twice with the light on and leaving it running to confirm the problem to the Unauthorized Harley Davidson dealer/mechanic of an old man but his patience prevailed!
A stator winding had a cracked wire that grew longer and shorter with heat and separated like a tree twig in a wind. It would slip sideways just a hair and quit charging.
Why couldn’t the same thing be going on with your car?
You got to find out, which one, of the two sides of the FIRE TRIANGLE is not present under heat!
I think you are reaching, in mind, just not body, yet!
(:-)
Good luck!
Phil
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