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  1. #1
    Xe54
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    Exclamation heavy jerking and stalling on hard acceleration

    Okay, so I have a 2000 Ford Ranger. This problem happened completely out of nowhere one day. I back out of my driveway, and when i started to accelerate, the truck would jerk and buck really hard, and start to bog out. I would have to barely have my foot on the gas so it wouldn't have that problem. It's been doing it for the past week or two, some days its not as bad, some days it horrible. If anyone has any ideas about what it is, let me know.

    P.S. truck has 110,000 miles on it. when the problem happened i replaced the fuel filter, checked the fuel pressure (stayed at a steady 65 psi even when the truck started bogging), and the truck isnt kicking any codes. Thanks, Xe54.

  2. #2
    Resident Septuagenarian Ponyguy's Avatar
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    Well, for one thing, 65 psi is awfully high fuel pressure...
    Have you checked the ignition system? Yours is a Lima engine, of which which I'm less familiar than the newer Duratec, so I'll concede to someone smarter to answer your question more thoroughly.
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  3. #3
    5oh divided by 2
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    Fuel filter pointing the right way? Don't know about all of them, but the one I replaced mine with was unidirectional
    Musician at heart, businessman by trade...Mini-Trucker by the grace of God.

    '99 Ranger-20" Eagle Alloys-roll pan-'04 Cavi Seats-Tonneau Cover-4/5 drop

  4. #4
    Blue oval blood cells BlueMan's Avatar
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    Check your MAF & TPS to make sure they are working correctly.
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
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    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
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  5. #5
    Xe54
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    MAF & TPS?

    maf im guessing is mass air flow sensor, that was one of the first things i checked, it's fine. what is a TPS?

  6. #6
    Blue oval blood cells BlueMan's Avatar
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    Sorry - Throttle Position Sensor. How did you check your MAF?
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
    MUSTANG ON MUSTANG


    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
    '00 XLT X-cab 2wd 3.0 stepside - MM#5

    '97 XLT reg cab 2wd 4.0 - (sold) MM#4
    '02 XL reg cab 2wd 3.0 - (sold) MM#3
    '98 XLT X-cab 4wd 4.0 - (sold) MM#2
    '09 Sport X-cab 2wd 4.0 - (sold)
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  7. #7
    Xe54
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    Friend of mine works at Ford, and I had him do a full diagnostic of the MAF sensor, and the throttle position sensor. O2 sensors are all fine, onboard computer is good, like i said, not kicking any codes either. Any more ideas? Im running pretty desperate here.

  8. #8
    Blue oval blood cells BlueMan's Avatar
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    Any vacuum leaks? How old is the upsteam O2 sensor? How old are your plugs & wires? Just because you don't have codes doesn't mean it's all working correctly, just that something isn't far enough out of range to flag the computer. obviously something is wrong or you wouldn't be having these problems. Time to start diagnosing the system and as you confirm what's working right you can eliminate possibilities, and what's left over should be the problem.

    If you don't have the mechanical abilities, consider tossing your friend a few bucks or something to get him to help you out.
    Last edited by BlueMan; Aug 02 2009 at 05:09pm.
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
    MUSTANG ON MUSTANG


    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
    '00 XLT X-cab 2wd 3.0 stepside - MM#5

    '97 XLT reg cab 2wd 4.0 - (sold) MM#4
    '02 XL reg cab 2wd 3.0 - (sold) MM#3
    '98 XLT X-cab 4wd 4.0 - (sold) MM#2
    '09 Sport X-cab 2wd 4.0 - (sold)
    '94 XLT X-cab 2wd 3.0 -(sold) it's just a moneymaker!
    '04 XLT std cab 2wd 2.3 (sold) w/Edge & Thunderbolt styling mods: The buildup
    '96 XLT x-cab 4x4 4.0 (sold)
    '86 STX x-cab 4x4 2.9/2.3 twin stick (sold)
    '85 std cab 2wd 2.3 prerunner (R.I.P)

  9. #9
    Xe54
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    Just installed new TPS, cleaned out the MAF, new plugs and wires a little over a year ago, which O2 sensor is most likely to cause the problem? The one before or after the catalytic converter? A vacuum leak could cause problems this severe? Theres absolutely no rough idle at all.

  10. #10
    Blue oval blood cells BlueMan's Avatar
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    The upstream one (closest to the engine) as it's the only one that is used to set the mixture, the other ones just tell the computer if the Cat is still working properly.

    Does it only jerk when it's cold, or anytime?
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
    MUSTANG ON MUSTANG


    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
    '00 XLT X-cab 2wd 3.0 stepside - MM#5

    '97 XLT reg cab 2wd 4.0 - (sold) MM#4
    '02 XL reg cab 2wd 3.0 - (sold) MM#3
    '98 XLT X-cab 4wd 4.0 - (sold) MM#2
    '09 Sport X-cab 2wd 4.0 - (sold)
    '94 XLT X-cab 2wd 3.0 -(sold) it's just a moneymaker!
    '04 XLT std cab 2wd 2.3 (sold) w/Edge & Thunderbolt styling mods: The buildup
    '96 XLT x-cab 4x4 4.0 (sold)
    '86 STX x-cab 4x4 2.9/2.3 twin stick (sold)
    '85 std cab 2wd 2.3 prerunner (R.I.P)

  11. #11
    Xe54
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    It does jerk WORSE when its cold, but it jerks anytime regardless.

  12. #12
    Xe54
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    This just in: The check engine light is still not on, but on a hunch i decided to plug in my OBDII tool just to see if anything would show up, sure enough a code was kicked. P0122 Throttle/Pedal Position Sensor A Circuit Low Voltage. Could this be causing all my problems?

  13. #13
    Built to Outlast Tumbler's Avatar
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    Have you checked the tranz fluid?
    edit: yes that is your tps sensor and it can definately cause the problem.
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  14. #14
    Xe54
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    I just replaced the TPS sensor though, what the hell?

  15. #15
    Blue oval blood cells BlueMan's Avatar
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    What did you replace it with, a new Ford TPS, or a used/aftermarket TPS? You can test the TPS just with a simple multi-meter, as it's just a variable resistor. You could also have issues somewhere in the wiring harness or the connector if it's a little corroded even if the TPS is working properly.
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
    MUSTANG ON MUSTANG


    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
    '00 XLT X-cab 2wd 3.0 stepside - MM#5

    '97 XLT reg cab 2wd 4.0 - (sold) MM#4
    '02 XL reg cab 2wd 3.0 - (sold) MM#3
    '98 XLT X-cab 4wd 4.0 - (sold) MM#2
    '09 Sport X-cab 2wd 4.0 - (sold)
    '94 XLT X-cab 2wd 3.0 -(sold) it's just a moneymaker!
    '04 XLT std cab 2wd 2.3 (sold) w/Edge & Thunderbolt styling mods: The buildup
    '96 XLT x-cab 4x4 4.0 (sold)
    '86 STX x-cab 4x4 2.9/2.3 twin stick (sold)
    '85 std cab 2wd 2.3 prerunner (R.I.P)

  16. #16
    rangeralways 500$ranger's Avatar
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    my truck does the same. I think im going to try the idle sensor. mine lopes and some time dies. today I cracked a water pump in half the pully was warped and broke the water pump case

  17. #17
    '96 Escort Driver
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    Quote Posted by xenonindustries View Post
    I just replaced the TPS sensor though, what the hell?
    Just because the computer says its that part, doesn't mean the part itself is bad. It is saying there is something wrong in the whole circuit, from the PCM to the wire to the TPS (in this case) and the wire back to the PCM. It could be as something as simple as a chafed wire to some thing as complicated as corrosian inside the insulation. I have seen both.
    Current Ride
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  18. #18
    Xe54
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    If anyone was having the same problem, I found a solution a while ago and forgot to post back on here. I needed a whole new MAF Sensor. Fixed everything, and made me run alot better.

  19. #19
    '07 Sport 3.0 jamesc's Avatar
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    Quote Posted by 500$ranger View Post
    my truck does the same. I think im going to try the idle sensor. mine lopes and some time dies. today I cracked a water pump in half the pully was warped and broke the water pump case
    why do people always post in someones thread, with completely unrelated issues that just make it harder for the OP to get his OWN truck fixed.

    Start your own thread, you thread jackin bastard. Your issue is NOT the same as his, you've described a completely different problem. Stop confusing the thread.

  20. #20
    Blue oval blood cells BlueMan's Avatar
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    Stop bitching about a 6-month old post. This might have been a valid argument last year about Holloween time, but not now.

    There's also no thread to jack here - the OP problem has been solved.
    Need to change your timing belt on a Lima? (2.0/2.3/2.5) Look <HERE>.

    MOMS RACING
    MUSTANG ON MUSTANG


    ------
    '12 Escape - daily driver, with the '97 F150 for the heavy haulin'
    '00 XLT X-cab 2wd 3.0 stepside - MM#5

    '97 XLT reg cab 2wd 4.0 - (sold) MM#4
    '02 XL reg cab 2wd 3.0 - (sold) MM#3
    '98 XLT X-cab 4wd 4.0 - (sold) MM#2
    '09 Sport X-cab 2wd 4.0 - (sold)
    '94 XLT X-cab 2wd 3.0 -(sold) it's just a moneymaker!
    '04 XLT std cab 2wd 2.3 (sold) w/Edge & Thunderbolt styling mods: The buildup
    '96 XLT x-cab 4x4 4.0 (sold)
    '86 STX x-cab 4x4 2.9/2.3 twin stick (sold)
    '85 std cab 2wd 2.3 prerunner (R.I.P)

 

 

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