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Thread: Help...electrical? Fuel?

  1. #1
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    Help...electrical? Fuel?

    My O3 has the weirdest issue. It's unpredictable. Started a couple of weeks when I hit a hard bump it died but started back up. Then it started doing whenever I hit a hard bump. Now though it's dying on the highway I pull over and it will sounds like its not getting fuel then it will go quiet like the ignition is not working at all then let it sit and it fires up. It's not running bad when not dying no studdering or anything. Any idea guys?

  2. #2
    How many miles are on it?

    2004 Silver Birch
    300B
    Build date:9/29/2003, Adopted on 12/02/05
    Exhaust by Greg
    13.630 @ 100.49 mph (11/21/10)

    2015 Ford Focus SE Sport FWD
    2013 Lincoln MKS EcoBoost AWD (377whp/423tq).
    2010 Ford Fusion Sport FWD
    1989.5 Ford Mustang 5.0 LXsport

  3. #3
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    Could it be a bad fuel inertia switch? Usually it has to be manually reset after tripping though. It's located in the trunk to the left.

  4. #4
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    Thanks

    140k runs great though

  5. #5
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    Quote Originally Posted by 05crownsport View Post
    Could it be a bad fuel inertia switch? Usually it has to be manually reset after tripping though. It's located in the trunk to the left.

    Thought that also tried it each time

  6. #6
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    [QUOTE=F2F;1175190]Thought that also tried it each time[/QUOT

    Did you hit the switch and then start it? Or did it start without resetting the switch?

  7. #7
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    Both the first few times it would start directly back up so no need to try it. Then these last times it's taken longer to bounce back so I have flipped it and tried it but it is not an immediate start after flipping it either.

  8. #8
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    Quote Originally Posted by F2F View Post
    Both the first few times it would start directly back up so no need to try it. Then these last times it's taken longer to bounce back so I have flipped it and tried it but it is not an immediate start after flipping it either.
    Sounds like some shake down testing is needed. Without being able to replicate the issue and make it not start, it's going to be difficult to diagnose. Carefully with vehicle running, start moving wiring to eliminate any loose connections.

  9. #9
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    Quote Originally Posted by 05crownsport View Post
    Sounds like some shake down testing is needed. Without being able to replicate the issue and make it not start, it's going to be difficult to diagnose. Carefully with vehicle running, start moving wiring to eliminate any loose connections.
    That was my fear. Well here we go.

  10. #10
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    Diablo???

    Mybcr was dying off and on. Took it to shop. They found a diablo that was half un plugged.

    Questions?

    1 do these normally stay on board?
    2 would it of caused my car to die and not re start? Then wait and it would start?
    3 a guy wanted me to buy his super hips I tried it did not like it unprogrammmed it. Now I know that diablo was on there could I if screwed something up?

    Talk to me guys a little stressed?

  11. #11
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    I assume you're talking about a Diablo chip installed in the PCM? If so, then yes having it partially unplugged will cause all sorts of problems. Most people duct tape them in to prevent this.

    As for question 3, are you saying you tried a SuperChips flash tuner? Did you remove the Diablo chip first?
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  12. #12
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    Quote Originally Posted by RF Overlord View Post
    I assume you're talking about a Diablo chip installed in the PCM? If so, then yes having it partially unplugged will cause all sorts of problems. Most people duct tape them in to prevent this.

    As for question 3, are you saying you tried a SuperChips flash tuner? Did you remove the Diablo chip first?

    Thanks and yes a programmer and no I had no I dea the diablo was there. It was in for one day. Could I of fried it?

  13. #13
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    Not likely you hurt anything, but with the chip in place, it overrides any programming you installed via the flash tuner. You have to remove the chip first, then use the tuner. That's probably why you didn't notice anything different.
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
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  14. #14
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    Quote Originally Posted by RF Overlord View Post
    Not likely you hurt anything, but with the chip in place, it overrides any programming you installed via the flash tuner. You have to remove the chip first, then use the tuner. That's probably why you didn't notice anything different.
    Thanks guys. Going to go pick her up. I had no idea I could love a car.

  15. #15
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    My fuel pump wire broke at about that mileage on my first mm, it did the same thing until one day it just wouldn't run
    2003 Black - sold, back again, and sold
    2003 DBP/DC - #153 Whipple 3.4 (permanent garage art)
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    2003 DBP/LF - # 205 (Sold)
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    2003 Black - shitbox

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