truck doesn`t run
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truck doesn`t run
I`m new to here I have a 93 f150 xlt 4x4 351 automatic it would run for a little bit then shut off now doesn`t run at all. So thinking it was the fuel pump changed it, still same problem disconnected the fuel line at the pump turned on ignition pump ran may 2 secs. then shut off. Reset inertia to be sure no change everything else works no codes to be found. Any ideas?
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
The pump is only going to run one second when you turn on the key so that is normal.
You need to see what codes you have in CM in the computer.
Check for spark and if you have none unplug the PCM Computer and check again and if spark returns you have a bad computer.
If still no spark I would guess you have a bad Coil, PIP sensor or ICM but check your codes first and see what they say.
You need to see what codes you have in CM in the computer.
Check for spark and if you have none unplug the PCM Computer and check again and if spark returns you have a bad computer.
If still no spark I would guess you have a bad Coil, PIP sensor or ICM but check your codes first and see what they say.
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I have fire, fuel pressure my codes are 33, 133 or 331, 33 the 33 is egr code I measured ohms the book says 5000 mine is 3000 will the low ohms make the truck not start? codes 133 and 331 are not listed in my book
Thanks for the help!!!!
Thanks for the help!!!!
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I changed the fuel regulator no change anymore ideas? still have fuel pressure and spark at the plugs
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Fleet Owner
Joined: Oct 2005
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From: Kentucky
I see you have replaced a fuel pump, FPR and various other parts. Have you confirmed what the fuel pressure is? You state you have spark, could you clarify where you checked it as well as the color (yellow, blue, etc.)?
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I have spark at the plugs i pulled the wire of of # 2 put a screw driver in it and turned the engine over watched the blue spark. I don`t have a noid light yet can i get them at parts stores, walmart or both? Thanks for the help!!!!!!
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Joined: Mar 2009
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From: Washington County, Penna
i know it isnt as accurate but i grounded a test light and put it on the 2nd wire of the injector ( not the solid red wire ) and has a friend crank the engine and it kinda pulsed, its a cheap *** way to see if it is firing injectors at the harness, but not exacctly accurate as to tell you if it is pulsing quick enough
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checked the injectors with anoid light, injectors are good but spark was orange this time battery is charged, would this be a coil pickup issue? is there a way to check it or just replace it? Again Thanks for everyone`s help!!!!!!!!!!!!!!