I've got a 5.7L TBI (1995) that has an odd problem that I've been trying to
diagnose and correct.
On a cold start, the truck starts fine. Drive it till it's hot and stop for
~30 minutes or less, it starts right up.
If you stop for longer than 45 minues or so, it will start right up.
If you stop for 30 to 45 minutes or so, it will start then immediatly die.
You can crank and crank and crank and crank and it will eventually start,
run rough for a few seconds, then idle fast and run fine. Stop it
immediatly again & it will start OK.
I did notice that if I turn the key on and off about 10 times (letting the
fuel pump relay come on for 2 seconds) after it won't start, it will then
start right up without the crank, crank, crank.
Any thoughts? I've had a new fuel pump, filter, relay, etc. during the past
5 years that I've been trying to diagnose and correct this problem.
ANy suggestions or thought are appreciated.