Ford Repair Questions? Ask a Mechanic for Answers ASAP
Hello. My name is ***** ***** I am happy to assist you today. Give me just a moment to review your post, and I'll be right back with the help you need.
Okay lets start with checking injector pulse and fuel pressure if your sure you have spark.
If you have injector pulse as well as good spark it should start, are you sure you have good spark?
Please do and while you doing this take a look at the check engine light and see if it comes on with the key on and goes out while cranking.
Okay then , you going to need to check and see if you have injector pulse and proper fuel pressure. Are you able to do this?
It should have at least tried to start with added fuel. Are you sure you have good compression as well? As I am sure you know, you need good spark, injector pulse, proper fuel pressure and good compression for the engine to start and run. Its just a matter of which one you are lacking to get this resolved.
Okay let me know the results.
50 PSI is not good , this engine needs at least 100 to 120 PSI to start and run.
Are you getting this low compression on all the cylinders?
Sure thing, let me know what you find and we can work from there.
Post back when your ready .
Okay so where back to determine if you are loosing spark or injector pulse or fuel pressure.Have you scanned the system to see if there are any fault codes setting?
The one code Im seeing in your list that could cause a no start concern is the P0340 which is in most cases caused by either failing camshaft position sensor and or the wiring to it. Have you checked it?
No it will not cause all the other codes. Try clearing the codes and lets see which ones reset.
Please do and let me know.
Okay the is the Cam sensor code and that is likely the source of your problem.
The 5.4 has one. see the link below for replacement steps. Make sure the connection to it is okay,https://dl.dropboxusercontent.com/u/104923897/cam%20sensor%20Nov%2026.pdf
See what codes are resetting. Since you just replaced the engine you may also want to go back and make sure all grounds are in place.
I would suspect you have either a bad ground or the PCM is failing. Go back in and inspect all your connections including all grounds.
Then you may be dealing with a bad computer.
Replacing the computer will require programming.
Your very welcome and thank you as well. Please take a moment to rate my service so I can get credit for my time, the question remains open for follow up even after doing so, all you need to do is return to this question if need be.Thank you again.
Sure thing. Im here if you need me.