Truck will not start when I first try to crank it, cycle switch a few time and the "wait to start" light comes on and I can hear lift pump come on and it starts right up. no codes, doesnt matter what the temp is, just had ecm repaired, checked relays and fuses no help Thanks for any info.

 

Hook up a fuel pressure gage , I do not remember , but I think you should have a min. 7-9 psi from lift pump-LP .
The put a test light on the LP 1st power side , then check with ohm meter for a good ground , see if the pump is getting power during those first couple of turns of the key [ maybe the ignition switch is not making that connection the 1st couple of times ] .
If your going to stay a while , fill in more of the truck info in the signature , and put you location , you may be near someone that could help .

 

Thanks for the info, pump is not getting power during the first try at starting. It will come on when the "wait to start" light goes off, and then starts right up,until I turn the truck off. Im in Meridian, Texas. It does not matter if the truck is cold or hot,and the temp outside does not matter.

 

Now just go upstream , hot from fuel pump , till you find where its not going through , power .
Could be burned points in relay , brushes / armature in pump motor , and key sw.

 

Mine was the same way until my oil pressure sending unit went out, once that was replaced the wait to start light works fine.

 

The pump should run for 25 seconds when you "bump" the starter if not try inter changing the relay there are 3 in the PDC all the same.

 

Holy Resurrection Batman....this is a 2008 thread

 

Yes, but if someone new Google it, then they have my answer to the problem.