I have a 89 mustang 5.0L it will start and run fine but when it reaches operating and i shut it off the engine will turn over but will not start. please help,Thanks

 

could be your coil, wires, tfi module, or dizzy but most likely tfi module

 

Could a broken map sensor cause it not to start when hot? Because recently i changed the heads and before that it ran fine and the only thing different are the heads and the map sensor got wedged under the upper intake and cracked the map sensor. I already have a new tfi module ,wires,coil,and cap so im stumped. any ideas would be great. Thanks

 

You need to find out if it's losing spark or fuel

 

it has both fuel and spark and it still wont crank

 

OK, you've just contradicted yourself. So which is it.

 

^^^^^lol noobs, I always love explaining the difference between cranks but won't start vs won't crank so it won't start..lol

 

Does it not start because it seems like the battery is going dead or does it crank ok just wont start? Mine had a bad starter/soleniod which made the car seem like it had a dead battery when it got hot if thats the problem your having....

 

so the car cranks slow?

sounds like starter heat soak

 

the motor spins but wont CRANK(no combustion)there is both fuel and spark. the starter sounds fine and fast seems like it throws it self way out of time but it IS in time.