I've tried to get some feedback for this on dif newsgroups,
but this one seems the most active, so here goes.

On my 94 Cherokee 4.0 I have this odd problem that only
happens when I first start off on any given drive. Seems that
within the first 10 to 15 feet of forward drive I'll hear and feel
this small thump, or vibration from under the left front. Once I
had my foot resting lightly on the brake and the pedal seems to
get rock hard when this happens. It's only for an instant, then
goes away for the rest of the drive. Turn off the truck, start off
again and same problem. Doesn't matter cold engine or warm.
Doesn't matter 4wd or not, I still get it. I don't notice any probs
when driving, but you never know...

Anyone with an idea? Maybe the ABS? Braking is fine during
drive time.

-Mike


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It sounds like the normal ABS test it cycles through each time the Jeep is
first started and driven. It takes long enough that you can usually feel it
as you first drive off.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"masterbiscuit" <masterbiscuit'remove-to-reply'@hotmail.com> wrote in
message news:QWegb.49280$E95.25126165@news4.srv.hcvlny.cv. net...
> I've tried to get some feedback for this on dif newsgroups,
> but this one seems the most active, so here goes.
>
> On my 94 Cherokee 4.0 I have this odd problem that only
> happens when I first start off on any given drive. Seems that
> within the first 10 to 15 feet of forward drive I'll hear and feel
> this small thump, or vibration from under the left front. Once I
> had my foot resting lightly on the brake and the pedal seems to
> get rock hard when this happens. It's only for an instant, then
> goes away for the rest of the drive. Turn off the truck, start off
> again and same problem. Doesn't matter cold engine or warm.
> Doesn't matter 4wd or not, I still get it. I don't notice any probs
> when driving, but you never know...
>
> Anyone with an idea? Maybe the ABS? Braking is fine during
> drive time.
>
> -Mike
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003
>
>

 

It sounds like the normal ABS test it cycles through each time the Jeep is
first started and driven. It takes long enough that you can usually feel it
as you first drive off.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"masterbiscuit" <masterbiscuit'remove-to-reply'@hotmail.com> wrote in
message news:QWegb.49280$E95.25126165@news4.srv.hcvlny.cv. net...
> I've tried to get some feedback for this on dif newsgroups,
> but this one seems the most active, so here goes.
>
> On my 94 Cherokee 4.0 I have this odd problem that only
> happens when I first start off on any given drive. Seems that
> within the first 10 to 15 feet of forward drive I'll hear and feel
> this small thump, or vibration from under the left front. Once I
> had my foot resting lightly on the brake and the pedal seems to
> get rock hard when this happens. It's only for an instant, then
> goes away for the rest of the drive. Turn off the truck, start off
> again and same problem. Doesn't matter cold engine or warm.
> Doesn't matter 4wd or not, I still get it. I don't notice any probs
> when driving, but you never know...
>
> Anyone with an idea? Maybe the ABS? Braking is fine during
> drive time.
>
> -Mike
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003
>
>

 

It sounds like the normal ABS test it cycles through each time the Jeep is
first started and driven. It takes long enough that you can usually feel it
as you first drive off.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.***.net/jerrypb/

"masterbiscuit" <masterbiscuit'remove-to-reply'@hotmail.com> wrote in
message news:QWegb.49280$E95.25126165@news4.srv.hcvlny.cv. net...
> I've tried to get some feedback for this on dif newsgroups,
> but this one seems the most active, so here goes.
>
> On my 94 Cherokee 4.0 I have this odd problem that only
> happens when I first start off on any given drive. Seems that
> within the first 10 to 15 feet of forward drive I'll hear and feel
> this small thump, or vibration from under the left front. Once I
> had my foot resting lightly on the brake and the pedal seems to
> get rock hard when this happens. It's only for an instant, then
> goes away for the rest of the drive. Turn off the truck, start off
> again and same problem. Doesn't matter cold engine or warm.
> Doesn't matter 4wd or not, I still get it. I don't notice any probs
> when driving, but you never know...
>
> Anyone with an idea? Maybe the ABS? Braking is fine during
> drive time.
>
> -Mike
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003
>
>

 

Thanks Jerry
I feel a little better now. Didn't want to think there was a big problem in
there.
I did try the on off on off on test last night, and only got code 55. So I'm
presuming there's no major issues going on with the thing.

Appreciate the reply
Mike, N2OX

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:dafgb.44869$gv5.15374@fed1read05...
> It sounds like the normal ABS test it cycles through each time the Jeep is
> first started and driven. It takes long enough that you can usually feel
it
> as you first drive off.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003

 

Thanks Jerry
I feel a little better now. Didn't want to think there was a big problem in
there.
I did try the on off on off on test last night, and only got code 55. So I'm
presuming there's no major issues going on with the thing.

Appreciate the reply
Mike, N2OX

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:dafgb.44869$gv5.15374@fed1read05...
> It sounds like the normal ABS test it cycles through each time the Jeep is
> first started and driven. It takes long enough that you can usually feel
it
> as you first drive off.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003

 

Thanks Jerry
I feel a little better now. Didn't want to think there was a big problem in
there.
I did try the on off on off on test last night, and only got code 55. So I'm
presuming there's no major issues going on with the thing.

Appreciate the reply
Mike, N2OX

"Jerry Bransford" <jerrypb@mecox.net> wrote in message
news:dafgb.44869$gv5.15374@fed1read05...
> It sounds like the normal ABS test it cycles through each time the Jeep is
> first started and driven. It takes long enough that you can usually feel
it
> as you first drive off.
>
> Jerry
> --
> Jerry Bransford
> To email, remove 'me' from my email address
> KC6TAY, PP-ASEL
> See the Geezer Jeep at
> http://members.***.net/jerrypb/



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.522 / Virus Database: 320 - Release Date: 9/29/2003