Odd hiccup
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Thread: Odd hiccup

  1. #1

    Default Odd hiccup

    well recently my car has had a little bit of a hiccup happening.

    the problem really presents itself when ever i accelerate, at about 30% throttle when the car reaches 35mph the rpms are at about 2600, the engine then "hiccups" the rpm drops about 200rpm and you really feel the loss of power, it is over almost immediately and it accelerate fine afterward.

    its not really a "problem" more of an annoyance, also recently whenever the torque converter locks, when cruising at about 50mph, the rpm's used to just drop and its locked, but now the rpm's rise 100-200rpm as if it is slipping then it locks. again an annoyance not a "problem"

    any ideas on either??

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  3. #2

    Default Re: Odd hiccup

    come on guys 25 views and not 1 idea??

  4. #3
    TEAM Member slowerthanyou's Avatar
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    Default Re: Odd hiccup

    DPFE, possibly? Is it a pulsation, or a one-time hiccup, then goes fine? I'm sorry, I think I am having some trouble understanding your post.

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  6. #4

    Default Re: Odd hiccup

    let me try to explain it better, im the worst at it though lol

    whenever i accelerate with 35-70% throttle, once the rpm's get to about 2600 the car feels as if you let off the throttle, it feels as if it almost stalls for a second, the rpm's drop about 100-200 it then will recover and continue accelerating fine. it happens in any gear at that rpm. it literally last less then a sec but it is there.

    i have always had a problem with the car at that rpm, it used to bog down really bad right at 2400 all the way to 3200. i have just ignored it because i could not figure it out.

  7. #5
    [FJ] Specialist G-forces's Avatar
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    Default Re: Odd hiccup

    Try the EGR hack to isolate the DPFE, stick a golf tee in the hose on top of the EGR valve and drive it then. See if that helps. You'll get a CEL if you keep it like that, but should be fine for a short test drive.
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.
    2002 Gold SE (Ghia) Focus, heavily modified... killed by a terrible driver
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  8. #6

    Default Re: Odd hiccup

    hmmm.... i have tried the dpfe fix but it was about 2 months ago, maybe now it will help lol

  9. #7
    TEAM Member SanduskySerpents's Avatar
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    Default Re: Odd hiccup

    When my dpfe was going out it never dropped so dractically. i would guess though something to do with the egr system though.
    Its not broken, Its CUSTOM!

  10. #8

    Default Re: Odd hiccup

    alright ive driven on the hack for the past few days and the hiccup is still there, any other ideas???

  11. #9
    TEAM Member SanduskySerpents's Avatar
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    Default Re: Odd hiccup

    Have you checked the fuel trims? maybe its dropping off and causing and extreme lean and bogging down the engine.
    Its not broken, Its CUSTOM!

  12. #10

    Default Re: Odd hiccup

    well how would i check that?? i dont know anyone with a tuner i can use, ive always thought ive had an A/F ratio problem though, but ave not found anyone with a tuner that could help me datalog

  13. #11

    Default Re: Odd hiccup

    well it seems to have dissapeared, so maybe the dpfe hack worked, does that mean my dpfe is bad??

  14. #12
    Rookie Scout Sniper's Avatar
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    Default Re: Odd hiccup

    Could be your coilpack as well. Basically the coilpack will fail to ignite a spark plug on a cycle or two and cause a dead spot. This usually happens during acceleration. If you notice a secondary issue of the speedometer jumping during this "hiccup" or "stutter" it would confirm the coilpack. The errant sparking causes EMI to be picked up by the VSS. It's very sensitive.

    Fix is about $80 and takes about 15 minutes. Remember to mark which wires go to which points on the coilpack. Plus, the connector on the front of the coilpack is tricky. There's a metal tab on the bottom of the plug. Push or pry it UP vertically while pulling the plug toward you and reverse the instructions for installation. The four screws holding the coilpack on are torx bits.
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  15. #13
    [FJ] Specialist G-forces's Avatar
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    Default Re: Odd hiccup

    Quote Originally Posted by hyprhwk View Post
    well it seems to have dissapeared, so maybe the dpfe hack worked, does that mean my dpfe is bad??
    Missed this somehow...

    If the EGR hack works, then the DPFE is bad.
    Getaway in Stockholm 2: Escort Cosworth vs Supra... adults-only driving on YouTube.
    2002 Gold SE (Ghia) Focus, heavily modified... killed by a terrible driver
    2004 Silver SVTF w/EAP, #800... sold, to become a track star

  16. #14
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    Default Re: Odd hiccup

    Quote Originally Posted by hyprshart View Post
    well it seems to have dissapeared, so maybe the dpfe hack worked, does that mean my dpfe is bad??
    Does it still seem to be working? My 2014 with only 30, 000 miles on it is having the exact same issue.


 

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