2006 F150 4.2 fuel issue? I get an intermitent no start condition and no obd codes. Then I discover that it really isn't intermitent, it only occurs after I have been running the engine. It will not start for at least 5-10 minutes after I have driven a few miles and shut the engine off. So if I wait 5-10 minutes then she starts and runs just fine. I played with this in the driveway to recreate this condition so I could determine if I had a spark or fuel issue (I have spark during no start). I found that 50% of the time I could start it right back up immediately after I shut the engine off. But if I shut it off right away again, then I got the no start condition again and have to wait another 5-10 minutes. Now with cold engine I can start the motor over and over. To fix this I read forum after forum, which led me to decide that I had a fuel pump driver problem (module) located on back axle under spare tire. I replaced this and restarted the engine many times. The problem seemed to be gone but this only lasted about 30 minutes. Then it would not start at all and still no codes. I plugged my old module back in and the truck fired right up. So I decided I needed to (flash) pcm for new part but that changes nothing. Still no start with new module and runs with old module. I also replaced relay in fuse panel.

 

where can i find what the obd live data specs are supposed to be so i can compair my readings to what the specs should be