Question about 1986 Ford Aerostar

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Steering wheel vibrates (around it's axis) very noticeable on newly paved stretch of road. Seems to be at all speeds up to 40 mph (could be at greater speeds, just haven't tried it out of town). Vibration seems to stop on curves. Also notice a thumping noise with the same frequency as the vibration. Have experienced loss of power steering fluid through a bad connection at the pump, the vibration continues with the proper fluid level.

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  • alkanda Feb 02, 2009

    Thanks bunnydawg. I've got a bad back so will go to a tire shop and have them check it out. The tire shop is closer than the closest full-service garage plus at the tire shop, I can wait while they replace the tires whereas I would have to leave it for a day at the other shop. If one of them is bad isn't it best practice to replace them both? (radials)

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The tire balancing is most likely the issue. If it doesn't completly solve the issue or you notice the issue return after only a few hundred miles on new tires then the issue may be more serious. In my experience, a shaking and vibration in the steering indicates either a bad tire, (could be front or back depending on if it stops on a curve or when you hit your brakes) bad alignment, again front or back, if you determine that you have bad tires and the vehicle is out of alignment, and after you have it repaired, the same issue returns like I said after only a few hundred miles or so, or doesnt fix the problem at all, then you may want to have the CV joints or even the trans axle inspected, you may even have a bad ball joint, tie rod, or any number of worn or damaged joints in the steering. Usually places like BIG O Tire or Commercial Tire or any big named chain mechanic shop will do a free inspection of your drive train. However i recommend getting a second or third opinion as these shops are notorious for recommending things you dont really need so compare each shop to the next and last and ask them to show you what they are talking about. Even if you have no idea what you are looking at, this is at least a deterrent to shops "faking" bad or worn components and they are less likely to lie, or create dangerous situations and tell you that there are major issues when actually there are none. Also the issue could be Disks or drums that need turned. My best suggestion is take it to a shop and have it professionally diagnosed by an A.S.E certified mechanic

Posted on Jul 20, 2009

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Could be an imbalance in one of the tires or one of the drums or rotors. Have to check it out.

Posted on Feb 14, 2009

  • kjatwork Feb 14, 2009

    Wasn't aware that you had a 'bad back' at all and the front tire replacement sound like it may be the ticket for your problems.

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The vibration normally observed due to un-balanced wheels. wheel allignment and balancing will solve your problem.

Posted on Feb 02, 2009

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Jack up the vehicle ... take one of the front tires off.... roll it down the driveway and let it go... if it veers off in a crazy fashion one of the belts has shifted and the tire needs to be replaced... now do it with the other tire... replace if necessary.'

Robert

Pleaes take a moment to rate this solution.. thanks

Posted on Feb 02, 2009

  • Roberta Smith
    Roberta Smith Feb 02, 2009

    it depends how worn the tires are... basically it would be good practice to replace them both at the same time if that's in the budget.



    Robert

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