I have been trying to figure out my friends no start problem on his 2000 3.8 5spd mustang, its got spark and commpression, fully charged batteryjust no fuel at all, no noise from the fuel pump, I have tested everything I can and the only thing that doesnt check out so far is the battery voltage I am suppose to be getting at pin 11 on the Constant control relay module, my DMM shows less than a volt, so i am wondering if I have to replace the CCRMalso I read up on the PATS system and was wondering if it could be the problem as well, the anti theft light constantly blinks with the KOEO but it lets me crank the engine over but just wont start it, will pats let the engine crank but not start or does it just stop the strater from cranking all together

 

if ur not getting fuel it can be ur pump or try checking the relay sometimes it causes these type of problems

 

where is the fuel pump relay go? am having the same problem, same car 2000 mustang 3.8 manual trans.

 

and can u send mea message, on the other message i didnt check the box to notify me when u reply

 

Try banging on the underside of the fuel tank with a stick.

No I'm not joking.Fuel pumps do just quit working,usually due to the brushes in the motor wearing out,and beating the gas tank will sometimes get them to work again for a very short time.
This is why most fuel pump failures happen after the car has been shut off and you try to restart.The road vibration keeps the brushes in contact with the commutator and the pump keeps purring merrily along.When you shut the car off,the brushes lose contact and the car won't start.

Give it a try,it might work and it's a lot easier than probing wire connectors andtesting relays.