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The lack of input from the OBD port is hurting your ability to make a diagnosis, and it may also point to the key error. So, when reviewing the wiring diagram I would focus on that problem first. It may be just a fuse (that appears to be OK but doesn’t let juice pass), so I would look again at your fuse bank with your power probe.
update…. i finally found the problem with the truck i took all the tape off the off the main harness on the firewall and found 4 blown fusesable links so im gona buy 4 new fuses links and i will have a running truck (i hope)T)
Yea it sounds like you’ve had some not so dedicated people working on that in the past, nice find, keep us posted.
I don’t know this vehicle, but I remember something about crash sensors shutting down the fuel and spark as a safety issue… Something to consider and possibly reset… Good Luck!
i have one Question after starting the truck i hooked up the code scanner to look at the live/view data and the passenger side fuel injector is reading -14 at cold but at normal operating temperature its -6 and the driver side is fine. does that mean the passenger side is starting to clog up?. i have 4 new o2 sensors its a f150 with a 4.2l v6
On a Ford if you are thinking PCM then think again and again before you buy one, they rarely go bad. Make sure your conections at the PCM are good. I would bet you have a crank sensor problem.
Quoted From jesse166062:
On a Ford if you are thinking PCM then think again and again before you buy one, they rarely go bad. Make sure your conections at the PCM are good. I would bet you have a crank sensor problem.
if i have a crank sensor problem would it set off a code on the computer?
Quoted From F150guy82:
if i have a crank sensor problem would it set off a code on the computer?
Sometimes they don’t.
I had a car awhile back that had a missfire code but no cranksensor code.. the crank sensor bolt came out and it was just hanging there, after putting a new bolt back in the code never came back.Quoted From F150guy82:
i have one Question after starting the truck i hooked up the code scanner to look at the live/view data and the passenger side fuel injector is reading -14 at cold but at normal operating temperature its -6 and the driver side is fine. does that mean the passenger side is starting to clog up?. i have 4 new o2 sensors its a f150 with a 4.2l v6
Are you looking at fuel trim numbers, pulse width or duty cycle of a particular injector?
Quoted From dreamer2355:
As long as your fuel trim numbers are +/- 10 of each other, you should be fine.
Here is a video by Scanner Danner that explains fuel trim –
http://www.youtube.com/watch?v=oRX2V6_a … re=g-all-c
i drove the truck to the store about 5 miles round trip and when i pulled on the gas pedal it has a hesitation and lass of power to go and sound sort a like a knocking sound and the truck starts to shimmy, shake if the rpm go higher then 1500.. could that be bad injectors? when can i do to fix the problem
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