When the car is cold it cranks an runs fine all day long until you shut it off then It want refire. I replace the ignition coil new plugs an wires has anybody had the same issue please help

 

You have any more information to give us so we have something to start with?

Like what car do you have and what engine is in it?

 

1987 camaro 2.8l v6

 

Use a multimeter to check the resistance of each injector and write it down. Then warm it up and check the resistance of the injectors when hot, and write it down. Report back with what you find, inconsistencies are bad usually.

 

Are you saying that it cranks normaly but wont start, or that it wont start because it is cranking slow . Slow cranking when warm could be a bad starter or one that is heat soaked.

 

i am getting EXACTLY the same with my 1991 V6 3.1
starts with a flick of the key when cold, when the car gets to operational temperature, it stalls when i try to hold it at let's say 4000rpm AND/OR when i didn't rev it, it just won't start again.

When the car has cooled down for like 45 minutes, it just starts perfectly again, until the car reaches 90C and then just does the same again.

completely new distributor and ignition module
new spark plugs
new spark plug lines
new fuel filter


What i have read on several forums is that the ignition module found in the distributer is the one to blame 50% of the time along with the injectors..
From what i have read the injectors give perfect ohms when room temp, but when at operational temp they just start failing.

Now before going into a full disassembly of the top part of the intake/fuel rails, i'm going to check in the first few days if i get enough fuel pressure when the car is hot (i guess this isn't the problem.. but still)

again, everything i just typed is what i have found so far.. if anyone has a good working solution (because i have seen this problem pop up more than once) you deserve a medal :-)

 

The injectors start to fail at operational temp because the coil is bad so the injectors shut down.

 

Thanks for your response, so you believe it might not be the injectors but the main ignition coil?
I ordered one yesterday, just because it's the only thing in the entire ignition system that hasn't been changed, and the old one looks.. old :-)

 

I'm sorry I should have specified....I meant the coil inside the injectors.