Question about 2001 Ford Focus

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Car rides rough when accelerating

(2001 Focus\Zetec\5spd\68k) It's an intermittent problem. It buckets usually at higher speeds and heavy acceleration. Sometimes in lower gears at takeoff, but anytime I accelerate hard it happens and at the same time the speedometer jumpes up 10 20 30 mph+. It always idles fine, but as soon as I step on the gas its jerky like if I was pumping the clutch. In between jumps it usually has plenty of power and most of the time I can go pretty smooth when barely touching the accelerator. Checked out some of the basic components that might be responsible, although I am not a mechanic and don't really know what to do. The engine looks very clean and well maintained. I'm hoping it's something simple. What I've done: -Checked spark plugs, they are clean and seem okay
-Used water remover for fuel tank and injector cleaner, no change
-AdvancedAP has checked for any codes and there were 0. No lights are on the dashboard
Any help appreciated

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  • fundango Aug 23, 2008

    It doesn't happen in neutral when I rev the engine, nor does it feel like there is too much throttle. Wouldn't that happen both when accelerating and also when letting go of the gas?

  • fundango Aug 23, 2008

    Thank you for the suggestion, I will definitely look into it. Although I wouldn't know how to replace it myself without instructions, I'll still keep that in mind as the first thing to be replaced.

    Unfortunately the problem has somewhat gottten worse and it is much more serious when the a/c is blasting. It had me stalled a couple of times when taking off. I'm considering taking it to a mechanic, but I'm afraid of them concluding something without proper analysis of the problem since all the people say something different from the others. I don't want to have parts replaced that are perfectly fine.

    Also you are the first person to think about the TPS and I so hope that you are right. If there is anything else you think I should know please tell.



    ps. I thought I "heard" someone say that you can disconnect the TPS to diagnose the problem. Once again I'm not a mechanic so it maybe incorrect, but I don't currently have a voltmeter plus it doesn't seem to happen when revving the engine in neutral.

  • fundango Aug 30, 2008

    Hi, I just replaced the Throttle Position Sensor and it seems to be better, but ultimately the problem is still there. It seems to **** less and not so bad, but it does still do it. When I took out the old one it was different from the new one the middle plastic part that rotates was moving around freely, like if it was worn. Just wanted to let you know, and if you have any other suggestions please let me know. Thanks

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I REVVED MY CAR WAY TOO HARD AS I WAS TYRYING TO SEND SPARK TO ANOTHER CAR BATTERY (PLUS I HAD THE SHITS!)THEN WEN I LLOKED AT THE ENGINE THERE WAS OIL EVERYWHERE ALL ON TOP AND ON THE GROUND,,IT STARTS WHAT DID I DO,ALSO I HAD A CAR ACCIDENT IN IT AND HIT THE GUTTER I ONLY GOT A FLAT TYRE BUT HAD NO SPARE (ALREADY ON)IT WAS ALSO ON A LONG WEEKEND ANYWAY IM JUST WANDERING COS I STILL GOT A DAY TO GO B4 THE SHOPS OPEN,COULD I HAVE STUFFED MY STEERING,,IN THER WORDS IF A CAR HITS A GUTTER DIRECT ON AT ABOUT 30KS AND IT WENT UP AND IT GAVE A FLAT TYRE,,WHAT ELSE IS IKELY TO BE WRONG OR CAN I GET LUCKY AND ONLY HAVE A FLAT TYRE,,,,,I MAY NEED A WHEEL ALIGNEMENT BUT I WONT BE SURE TIL I GET THE NEW TYRES,SOMEONE MENTIONED STEERING COLUM CAN U EXPLAIN THIS?THANKS...ITS A 1991 TOYOTA CAROLLA

Posted on Oct 06, 2008

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The throttle position sensor could be kaput.
On the other hand you might begin by cleaning the throttle.It may be sticking. Locate where the throttle cable goes to the intake and use an appropriate spray cleaner to clean the throttle.

Posted on Aug 23, 2008

  • 2 more comments 
  • Gayle Ashbach
    Gayle Ashbach Aug 23, 2008

    Yes it could, but it is still worth a try to clean the throttle, before you have to take it in for alook, because I think that is your next step, unless you can replace the throttle position sensor yourself.

  • Gayle Ashbach
    Gayle Ashbach Aug 24, 2008

    If I were you, I would check around and try and get a recommendation fromsomeone about an independent mechanic rather than a big shop. With some good recommendations, you might find someone who has prior expoerience in a Ford shop and is now working on his or her own. Good luck to you and thank you for the rating.

  • Gayle Ashbach
    Gayle Ashbach Aug 24, 2008

    This page might interest you



    http://myfordfocus.com/how-to/65mm.htm

  • Gayle Ashbach
    Gayle Ashbach Aug 30, 2008

    I wanted to quickly get to you, because I'm not sure when I'll be back , but I'll be thinking about what else it could be. someone piggybacked a trojan on a duplicating virus and completely trashed my two year old Computer system, so I have it barely running, however, I 'm going to have to buy a new hard drive and install it or buy another laptop. I'll try to get back to you in a few days. I'm sorry I haven't been back sooner. Four long days of working on this thing only to find I can't fix Ya (HA) Ah well such is life. I have the best security money can buy but absolutely nothing is foolproof. I am a photographer by trade and just backed up all my work last week. Whew! I am glad your car is running a little better, but there is something else going on besides that, huh? Let me give it some thought. In case youre wondering, I grew up on a farm working on all sorts of vehicles. Have a good evening!

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