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Old 11-05-2005, 01:01   #1 (permalink)
hornman
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Pulling problem on 1998 E-250 van.

Over a period of time a very strong pull developed in the front end when
applying the brakes. The van pulls left only slightly when the brakes are
cool to warm. As the brakes heat up from heavy use, the pull gets much
worse. It will totally change lanes if you do not hold tightly to the
wheel when you brake hard. Everything in the brake system has been
changed. One bushing in the suspension system was slightly worn, so it was
also changed. Rear brakes were completely replaced earlier this year,
also. I carrying about 10,000 lbs gross on board. My mechanic shop has
given up on solving this problem. They are very well versed in Ford
products, so they are experts in all areas of mechanic work; but this one
has them all puzzeled. Any suggestions?

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Old 11-05-2005, 04:01   #2 (permalink)
The OTHER Kevin in San Diego
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Re: Pulling problem on 1998 E-250 van.

On Sat, 05 Nov 2005 02:38:19 -0500, "hornman" <gbecker1@charter.net>
wrote:

>Over a period of time a very strong pull developed in the front end when
>applying the brakes. The van pulls left only slightly when the brakes are
>cool to warm. As the brakes heat up from heavy use, the pull gets much
>worse. It will totally change lanes if you do not hold tightly to the
>wheel when you brake hard. Everything in the brake system has been
>changed. One bushing in the suspension system was slightly worn, so it was
>also changed. Rear brakes were completely replaced earlier this year,
>also. I carrying about 10,000 lbs gross on board. My mechanic shop has
>given up on solving this problem. They are very well versed in Ford
>products, so they are experts in all areas of mechanic work; but this one
>has them all puzzeled. Any suggestions?


Does "everything" include the hoses? Calipers?? Proportioning
valve??
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Old 11-05-2005, 08:01   #3 (permalink)
Agave
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Re: Pulling problem on 1998 E-250 van.

In my case, it wasn't the normal things you'd necessarily look for that
were causing the same problem. The culprit was the brake line itself.
At some point...I think it was when the wheel bearing was going
bad...the left front brake line was heated and the rubber inside the
stainless steel braid had deteriorated. The fluid would flow near
normal to the caliper, but would be slow on the return causing the brake
to bind. What made it hard to diagnose was that there was no visible
markings on the exterior of the brakes line, nor was the flow noticeably
different to the brake.

hornman wrote:
> Over a period of time a very strong pull developed in the front end when
> applying the brakes. The van pulls left only slightly when the brakes are
> cool to warm. As the brakes heat up from heavy use, the pull gets much
> worse. It will totally change lanes if you do not hold tightly to the
> wheel when you brake hard. Everything in the brake system has been
> changed. One bushing in the suspension system was slightly worn, so it was
> also changed. Rear brakes were completely replaced earlier this year,
> also. I carrying about 10,000 lbs gross on board. My mechanic shop has
> given up on solving this problem. They are very well versed in Ford
> products, so they are experts in all areas of mechanic work; but this one
> has them all puzzeled. Any suggestions?
>
>

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Old 11-05-2005, 09:01   #4 (permalink)
JimV
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Re: Pulling problem on 1998 E-250 van.

hornman wrote:
> Over a period of time a very strong pull developed in the front end when
> applying the brakes. The van pulls left only slightly when the brakes are
> cool to warm. As the brakes heat up from heavy use, the pull gets much
> worse. It will totally change lanes if you do not hold tightly to the
> wheel when you brake hard. Everything in the brake system has been
> changed. One bushing in the suspension system was slightly worn, so it was
> also changed. Rear brakes were completely replaced earlier this year,
> also. I carrying about 10,000 lbs gross on board. My mechanic shop has
> given up on solving this problem. They are very well versed in Ford
> products, so they are experts in all areas of mechanic work; but this one
> has them all puzzeled. Any suggestions?
>


Sounds like a caliper that's not retracting (aka stuck) to me. As it
heats the rotor from friction, it gets less and less effective.


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Old 11-06-2005, 21:01   #5 (permalink)
Tom Gardner
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Re: Pulling problem on 1998 E-250 van.

Finally, after replacing EVERYTHING else, we found the rubber hose ply
separated and held pressure...very strange symptoms...like yours. I see
other people thought this right off.

"hornman" <gbecker1@charter.net> wrote in message
news:215bc6d1f8c27ae73274a3d7aa14ec02@localhost.talkabouttrucks.com...
> Over a period of time a very strong pull developed in the front end when
> applying the brakes. The van pulls left only slightly when the brakes are
> cool to warm. As the brakes heat up from heavy use, the pull gets much
> worse. It will totally change lanes if you do not hold tightly to the
> wheel when you brake hard. Everything in the brake system has been
> changed. One bushing in the suspension system was slightly worn, so it was
> also changed. Rear brakes were completely replaced earlier this year,
> also. I carrying about 10,000 lbs gross on board. My mechanic shop has
> given up on solving this problem. They are very well versed in Ford
> products, so they are experts in all areas of mechanic work; but this one
> has them all puzzeled. Any suggestions?
>



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Old 11-16-2005, 04:01   #6 (permalink)
Richard Powers
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Posts: n/a
Re: Pulling problem on 1998 E-250 van.

Take a pressure check on both lines,, I think you will find your problem
from this check!
or , frozen calipher, deffective calipher ect,, but I really think from your
report you are having a pressure problem!!

"hornman" <gbecker1@charter.net> wrote in message
news:215bc6d1f8c27ae73274a3d7aa14ec02@localhost.talkabouttrucks.com...
> Over a period of time a very strong pull developed in the front end when
> applying the brakes. The van pulls left only slightly when the brakes are
> cool to warm. As the brakes heat up from heavy use, the pull gets much
> worse. It will totally change lanes if you do not hold tightly to the
> wheel when you brake hard. Everything in the brake system has been
> changed. One bushing in the suspension system was slightly worn, so it was
> also changed. Rear brakes were completely replaced earlier this year,
> also. I carrying about 10,000 lbs gross on board. My mechanic shop has
> given up on solving this problem. They are very well versed in Ford
> products, so they are experts in all areas of mechanic work; but this one
> has them all puzzeled. Any suggestions?
>



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