Binding noise from the rear (TJ '01)
#21
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
I do have Trac-Loc limited slip differential. The noise was after highway
drive for 90 minutes. I had come to a complete stop at a stop sign on the
off ramp and heard it when I was making a left turn as I started moving at
a slight incline. The second time as well I was making a turn, but this
time it was a right turn. The sound seems to be coming from both back
sides, therefore, I am assuming its the diff. because both drum brakes
starting to stick at the same time in point would be very coincidental,
then may be it was my lucky day (may be I should buy a Lotto ticket for
tomorrow, jackpot this week is NZ$15.5 million!!!). I need to find an open
auto store over the Easter break and buy the oil. Do you think it would be
beneficial in the long run if I go with synthetic oil this time.
TW
"Robert Brace" <rlbrace@shaw.ca> wrote in message
news:EUgdc.53087$oR5.31906@pd7tw3no...
> TW:
> If you have the TRAC-LOC plate type limited slip diff, it sounds like
> "stiction" in the plates to me (will usually show up after a highway
drive
> and up to full temperature, then upon making a turn under power). This
is
> normally fixed by a fluid change, adding the recommended additive and
> driving some "figure 8's" to work the fluid in. It should be OK by then.
> This is providing the plates are mechanically sound. If not, further
> repairs could be required.
> Bob
>
drive for 90 minutes. I had come to a complete stop at a stop sign on the
off ramp and heard it when I was making a left turn as I started moving at
a slight incline. The second time as well I was making a turn, but this
time it was a right turn. The sound seems to be coming from both back
sides, therefore, I am assuming its the diff. because both drum brakes
starting to stick at the same time in point would be very coincidental,
then may be it was my lucky day (may be I should buy a Lotto ticket for
tomorrow, jackpot this week is NZ$15.5 million!!!). I need to find an open
auto store over the Easter break and buy the oil. Do you think it would be
beneficial in the long run if I go with synthetic oil this time.
TW
"Robert Brace" <rlbrace@shaw.ca> wrote in message
news:EUgdc.53087$oR5.31906@pd7tw3no...
> TW:
> If you have the TRAC-LOC plate type limited slip diff, it sounds like
> "stiction" in the plates to me (will usually show up after a highway
drive
> and up to full temperature, then upon making a turn under power). This
is
> normally fixed by a fluid change, adding the recommended additive and
> driving some "figure 8's" to work the fluid in. It should be OK by then.
> This is providing the plates are mechanically sound. If not, further
> repairs could be required.
> Bob
>
#22
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Thanks for the reply. Yes, I do have Trac-Loc rear differential. I have
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
#23
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Thanks for the reply. Yes, I do have Trac-Loc rear differential. I have
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
#24
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Thanks for the reply. Yes, I do have Trac-Loc rear differential. I have
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
#25
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Thanks for the reply. Yes, I do have Trac-Loc rear differential. I have
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
40,000 kms on the clock. I had asked the dealership for the need to change
the differential oil at last service (37k) and the service manager said it
should be done at 48k service for my driving style. At 37k service auto
transmission was serviced. The TJ was under warranty till two weeks ago,
now the service will be done by myself. Being Good Friday, everything is
closed here now. I'll find an open auto parts store tomorrow and buy the
differential oil and change both front and rear oils. Hopefully that is
the problem. Do you think I will be better off going to synthetic variety?
I do go off-road on the weekends, but its nothing hardcore as yet because
the set-up is factory stock (not for long though).
I am still trying to source the Factory Service Manual for mine, being in
New Zealand, its a right hand drive export model.
Have a nice long weekend,
TW
"mabar" <mabar@NOSPAMgbronline.com> wrote in message
news:readnRcHbMTm0ejdRVn-uA@gbronline.com...
> Do you have the Trac-Loc rear differential? Crawl under the TJ and look
for
> a small metal tag on the differential saying "limited slip additive
> required."
>
> If so, it is a limited slip design with clutch packs that can sometimes
bind
> slightly if the rear fluid has not been changed in a long time. Fluid
should
> be changed every 30000 miles or so.
>
> Most brands of differential fluid already contain the additive, but if
not,
> you can buy a small bottle of the additive at most auto parts stores.
>
> Tom
>
> If so, change the rear differential fluid.
#26
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Adding to my earlier post.
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
#27
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Adding to my earlier post.
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
#28
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Adding to my earlier post.
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
#29
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
Adding to my earlier post.
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
I have just read the owners manual (again) and it suggests under Schedule
"B", diff oils should be changed at 38k kms. I guess I am at 40k so the
oil is breaking down and needs replacing. I just wonder which schedule the
dealer was following.
Am I better off with SAE 80W-90 API-GL5 grade oil in both front and rear
(with additive for Trac-Lok in rear) or should I go for SAE 75W-140 API-GL5
grade oil (with additive for Trac-Lok in rear). The second one is
mentioned in the owners manual for towing and heavy load applications.
Would Shell Spinax HD fit this grading or do I find something in Mobil
(like Mobil 1). I have been using Mobil lubes and Shell gas in all my
vehicles. I guess off-roading in mud and soft can be classed as heavy load
applications. Any opinions from the group would be appreciated.
Have a nice break everyone,
TW
#30
Guest
Posts: n/a
Re: Binding noise from the rear (TJ '01)
TW:
From this and your other posts, it sounds as if "stiction" could be the
problem. Good excuse to change the fluid in any event. I don't know what
DC's recommendations are for the '01 but for the '03 Rubi they say to go to
the 75-140 synthetic for heavy usage such as trailer pulling. The DC
dealers up here (Canada - West Coast) carry it under the Chrysler - Jeep
brand (Chryco I think). Their mentioning of trailer pulling and heavy usage
tells me it will most likely have better hi-temp characteristics. With the
75 low end, it should flow better at low temps as well (don't know about the
range needed in NZ though).
Hope that helps, have a good holiday.
Bob
"TW" <a t t w @ w a v e . c o . n z> wrote in message
news:c54das$6ab$2@news.wave.co.nz...
> I do have Trac-Loc limited slip differential. The noise was after highway
> drive for 90 minutes. I had come to a complete stop at a stop sign on the
> off ramp and heard it when I was making a left turn as I started moving at
> a slight incline. The second time as well I was making a turn, but this
> time it was a right turn. The sound seems to be coming from both back
> sides, therefore, I am assuming its the diff. because both drum brakes
> starting to stick at the same time in point would be very coincidental,
> then may be it was my lucky day (may be I should buy a Lotto ticket for
> tomorrow, jackpot this week is NZ$15.5 million!!!). I need to find an
open
> auto store over the Easter break and buy the oil. Do you think it would
be
> beneficial in the long run if I go with synthetic oil this time.
>
> TW
>
>
> "Robert Brace" <rlbrace@shaw.ca> wrote in message
> news:EUgdc.53087$oR5.31906@pd7tw3no...
> > TW:
> > If you have the TRAC-LOC plate type limited slip diff, it sounds
like
> > "stiction" in the plates to me (will usually show up after a highway
> drive
> > and up to full temperature, then upon making a turn under power). This
> is
> > normally fixed by a fluid change, adding the recommended additive and
> > driving some "figure 8's" to work the fluid in. It should be OK by
then.
> > This is providing the plates are mechanically sound. If not, further
> > repairs could be required.
> > Bob
> >
>
>
From this and your other posts, it sounds as if "stiction" could be the
problem. Good excuse to change the fluid in any event. I don't know what
DC's recommendations are for the '01 but for the '03 Rubi they say to go to
the 75-140 synthetic for heavy usage such as trailer pulling. The DC
dealers up here (Canada - West Coast) carry it under the Chrysler - Jeep
brand (Chryco I think). Their mentioning of trailer pulling and heavy usage
tells me it will most likely have better hi-temp characteristics. With the
75 low end, it should flow better at low temps as well (don't know about the
range needed in NZ though).
Hope that helps, have a good holiday.
Bob
"TW" <a t t w @ w a v e . c o . n z> wrote in message
news:c54das$6ab$2@news.wave.co.nz...
> I do have Trac-Loc limited slip differential. The noise was after highway
> drive for 90 minutes. I had come to a complete stop at a stop sign on the
> off ramp and heard it when I was making a left turn as I started moving at
> a slight incline. The second time as well I was making a turn, but this
> time it was a right turn. The sound seems to be coming from both back
> sides, therefore, I am assuming its the diff. because both drum brakes
> starting to stick at the same time in point would be very coincidental,
> then may be it was my lucky day (may be I should buy a Lotto ticket for
> tomorrow, jackpot this week is NZ$15.5 million!!!). I need to find an
open
> auto store over the Easter break and buy the oil. Do you think it would
be
> beneficial in the long run if I go with synthetic oil this time.
>
> TW
>
>
> "Robert Brace" <rlbrace@shaw.ca> wrote in message
> news:EUgdc.53087$oR5.31906@pd7tw3no...
> > TW:
> > If you have the TRAC-LOC plate type limited slip diff, it sounds
like
> > "stiction" in the plates to me (will usually show up after a highway
> drive
> > and up to full temperature, then upon making a turn under power). This
> is
> > normally fixed by a fluid change, adding the recommended additive and
> > driving some "figure 8's" to work the fluid in. It should be OK by
then.
> > This is providing the plates are mechanically sound. If not, further
> > repairs could be required.
> > Bob
> >
>
>