2006 5.4L F150 engine issues
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2006 5.4L F150 engine issues
Hi, I have threads going on other sites too, you may have seen, but I absolutely have to get this sorted out and I need to reach as many experts as possible.
2006 F150 5.4L, 75,000 miles, bought brand new.
Ford dealership had my truck for 2 months and couldn't figure it out. Basically, the truck starts and idles fine. If I give it any throttle, it will not increase RPM and sputters out. If I don't let off the throttle, it will die. After it FULLY and I mean FULLY warms up, I can coax the RPM higher and drive it...roughly.
No codes. Prior to the dealership it was giving me a crank or cam position sensor error, so I had those replaced and it did nothing. I also inspected the wiring and it looks fine.
Cleaned the throttle body.
Replaced MAF the other day, with a Motorcraft one.
A few years ago I replaced the plugs and COPs, as well as the FPDM.
Dealership replaced O2 sensors.
I have a few videos of sensor readings that I took while it was running, like this one:
I'm pretty desperate for help here...
My sense is that there's a sensor that isn't working properly somewhere, and that when it's fully warmed up it responds slightly better to whatever is being thrown out of whack...fuel/air mixture, or something.
2006 F150 5.4L, 75,000 miles, bought brand new.
Ford dealership had my truck for 2 months and couldn't figure it out. Basically, the truck starts and idles fine. If I give it any throttle, it will not increase RPM and sputters out. If I don't let off the throttle, it will die. After it FULLY and I mean FULLY warms up, I can coax the RPM higher and drive it...roughly.
No codes. Prior to the dealership it was giving me a crank or cam position sensor error, so I had those replaced and it did nothing. I also inspected the wiring and it looks fine.
Cleaned the throttle body.
Replaced MAF the other day, with a Motorcraft one.
A few years ago I replaced the plugs and COPs, as well as the FPDM.
Dealership replaced O2 sensors.
I have a few videos of sensor readings that I took while it was running, like this one:
I'm pretty desperate for help here...
My sense is that there's a sensor that isn't working properly somewhere, and that when it's fully warmed up it responds slightly better to whatever is being thrown out of whack...fuel/air mixture, or something.
