My 1996 F150 fixer-upper!

Discussion in 'General Discussions' started by Pity7700, May 29, 2016.

  1. Pity7700

    Pity7700 oh umm...uhh?

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    was able to get a bolt for the transmission support at the local hardware store, not sure what happened to the original one. trans was knocking around and making a ton of noise. nice and quiet now, trans shifts great too.
     
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  2. Pity7700

    Pity7700 oh umm...uhh?

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    Alright, I'm getting a crankshaft sensor code along with every O2 sensor.
    Crankshaft sensor is brand new, still popping up.

    Anyone have a clue? Been digging a little, thiming I might have a vac leak somewhere, kinda odd that all o2 sensors are throwing codes, a vac leak could cause it, correct? Previous owner said he replaced 1 of them, not sure which.

    Give me some ideas, gents.
     
    Last edited: Jun 2, 2016
  3. Pity7700

    Pity7700 oh umm...uhh?

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    P0385 is the crankshaft code that's showing up.
     
  4. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Did some searching, seems something
    as simple as a misfire can cause
    that code to show up and keep coming back.
    Saw drill down list of things to check on that code one of them being "replace PCM"
    Others are crankshaft sensor short to power and short to ground.
    Seems like if either of those types shorts are occurring it will not run.


    Replace PCM Not something you want to just whip out your wallet on.

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    Last edited: Jun 3, 2016
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  5. Pity7700

    Pity7700 oh umm...uhh?

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    I did see that. I also looked up the O2 codes im getting, also say it could be a "replace pcm" situation.
    Might try to snag a pcm from the salvage yard tomorrow, they have a ton of 5.0s. wonder if I have to have a 96 pcm or if I can use another year.

    eBay has refurbished pcms for $200, that's not too bad.
     
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  6. Roush PSD Interceptor

    Roush PSD Interceptor 7.3L Straight Piped Diesel

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    Electrical gremlins like chasing a ghost or
    a vapor in the wind. There one moment and gone the next.

    I'd try the engine running and pull plug wires one at a time to see if it makes a difference in the way it idles, heck worth a shot.

    That would eliminate misfire as source of code on crankshaft sensor.

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  7. Pity7700

    Pity7700 oh umm...uhh?

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    Took the day off work. messing with it all day.

    Found a couple more brittle hoses when I get home.

    The o2 codes that are being throw is for the o2 sensor heater circuit. I gotta check the wiring for the sensors to make sure something isn't melted.
     
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  8. Pity7700

    Pity7700 oh umm...uhh?

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    Checked the voltage readings of the o2 sensors with my scan tool, bank 1 sensor 1 is at .3v, bank 1 sensor 2 is reading .07v and bank 2 sensor 1 is reading .3v.

    That's all pretty low readings which would mean the vehicle is running lean.
     
  9. Pity7700

    Pity7700 oh umm...uhh?

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    What do y'all think of this?

    Gutted cat?

    20160603_141557.jpg
     
  10. Bdons-SD

    Bdons-SD Anti spark plug!

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    Gutted, or a redneck patch job


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