UPDATE! The truck started today with me giving it a little gas and actually ran. The motor smoked, I think from running rich. It wouldn’t idle on its own, died when I tried to let it idle by itself. The motor didn’t sound weird I don’t think. I cleared all the codes prior to this attempt. Im updating the whole post so please read again!

Okay I’m stumped. Bought this truck not running the lady was driving it and it died.Here a list of diagnostics/new parts
04 f150 5.4 4x4

codes the truck threw when I started it.P0102- MAF OR VAF A CKT LOW INPUT(wasn’t fully plugged in, wasn’t clipped but was on the plug and honestly plenty enough to make some connection.)

P0113- IAT sensor 1 CKT high

P2106- throttle actuator control system forced limited power

new parts
fuel pump
fuel filter
crank sensor
both cam sensor

diagnostics
fpdm-good (had a new one on and no difference in FP)
coil packs- good replaced 2 years ago grounded and checked for spark✅
spark plugs-good 6 months old grounded check for spark✅
injector noid light check- good
checked the grounds I could find/cleaned
fuel is getting to the rails at 5kpa according to scanner which is like 1psi. Checked pressure at new fuel pump and it’s running 130psi.
truck won’t start off ether
tbps-unsure
throttle body is moving good
temp is reading -40 on scanner(ait sensor threw code so I guess it’s bad)
i have oil pressure when cranking according to dash
checked fuses (not completely sure if I checked all the right ones) injector, starter, and basically anything that could do with fuel, spark or timing)
No weird rattling or noises when cranking

 

Are the injectors spraying?just because you have pressure doesn't mean the engine is getting fuel.

Shoot some starting fluid in it for a quick check

 

Fuel pump would have been my first thought too, but you've eliminated that, so I think it must be electrical ( unless there is massive compression leak, like maybe hose to brake master cylinder came off).

Model, year, mileage?
OBDC codes?
Spark checked?

I'd use Google to find charts for the relays and fuses to decide which to test.

 

need more details. Some test work seems incomplete and/or not clear how you’ve determined some parts are good. And as already mentioned, no mention of dtc code history.

 

not sure, I’ve not pulled one to see but between that and a compression test I think that’s about all I have left before I take the timing cover off and check timing

 

by reading this forum to diagnose this stuff that’s why I just put checked good

 

Still no mention of DTC history, and not clear on which fuses were checked or how tested (same for grounds).



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