Question about 1997 Ford Aerostar Extended

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Ford Aerostar Vacuum Lines

My vans check engine light came on the other day so I took it in to advanced where they told me the speed sensor is malfunctioning. A few days later I had them recheck before I bought the part and now they tell me along with that the vehicle is running too lean, and the transmission is showing problems too.

When I put the van in drive it hesitates and idles pretty rough, and when actually driving there is a whistling sound at half throttle that goes away when I give it more gas or let off, My only guess is a vacuum leak, but I'm not sure where to start or where to find a diagram for the vacuum lines on this thing, any suggestions?

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  • killwhytey07 May 29, 2009

    I agree they aren't technicians, but they do have the equipment to read error codes and tell me what they say. The error code, not the sales staff, told me the speed sensor was malfunctioning along with the other things I posted. Obviously I didn't trust the car to them or I wouldn't be asking the questions right?

  • yadayada
    yadayada May 11, 2010

    the error code doesn't tell u the sensor is bad only that there is a fault in that circuit, it can be wiring, it can be the control module, it can be the trans drive gear, very simplified to think that an error code always means the is sensor bad, wish it where true, but based on 25 years of doing this for living it is not.

  • yadayada
    yadayada May 11, 2010

    those guys at the parts store are not technicians and u where a fool to trust what they told u. here in calif they are not allowed to do this test anymore or offer car repair advice as they got sued over it by the state dept of automotive repair, u trust your expensive car repair to a discount auto parts counter person????

    Have a qualified technician check these problem, be smart this time.

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Try these website to see if they have you van listed it www.autozone.com and the other one is www.alldatadiy.com if they have your van listed and another thing you can do is stop by your local library and get your hands on a Haynes auto repair manual for your van

Posted on May 29, 2009

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