Hi Matt,
I think they always directed you to place that asked for money to
further defined the recall: http://alldata.com/TSB/04/010433d2.html The
1926 Nash engine is pretty well refined by the time you bought it:
http://www.pnwnash.org/common/closeu...rsonid=&carid=
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

matt borland wrote:
>
> "matt borland" <mborland@columbus.rr.com> wrote in
>
> >
> > I'm headed to the alldata site to see if there's a TSB...
>
> Wow, I see I've been away for awhile. No free lists
> anymore and redirects to Autozone for parts...
>
> No oil pressure TSBs for WJs of the same vintage...
>
> Hmmmm....
>
> -Matt-

 

Hi Matt,
I think they always directed you to place that asked for money to
further defined the recall: http://alldata.com/TSB/04/010433d2.html The
1926 Nash engine is pretty well refined by the time you bought it:
http://www.pnwnash.org/common/closeu...rsonid=&carid=
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

matt borland wrote:
>
> "matt borland" <mborland@columbus.rr.com> wrote in
>
> >
> > I'm headed to the alldata site to see if there's a TSB...
>
> Wow, I see I've been away for awhile. No free lists
> anymore and redirects to Autozone for parts...
>
> No oil pressure TSBs for WJs of the same vintage...
>
> Hmmmm....
>
> -Matt-

 

Hi Matt,
I think they always directed you to place that asked for money to
further defined the recall: http://alldata.com/TSB/04/010433d2.html The
1926 Nash engine is pretty well refined by the time you bought it:
http://www.pnwnash.org/common/closeu...rsonid=&carid=
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

matt borland wrote:
>
> "matt borland" <mborland@columbus.rr.com> wrote in
>
> >
> > I'm headed to the alldata site to see if there's a TSB...
>
> Wow, I see I've been away for awhile. No free lists
> anymore and redirects to Autozone for parts...
>
> No oil pressure TSBs for WJs of the same vintage...
>
> Hmmmm....
>
> -Matt-

 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Matt,
> Nope, never heard of it, only when the distributor shaft seizes and
> breaks the drive gear, which of coarse kills the engine, or drive rod on
> other types of engines. Pull the distributor and you can find something
> broken. Then use a large screwdriver bit on a drill and spin the pump
> and see what happens. Been a little lax on the oil changes lately?

Only thing that pops into my widdle mind is the pickup tube falling off
but that's not very likely since IIRC it's got a bolt holding it into
that engine. Howmever... You could pull the distributor and check the
drive spline just be be sure. That will let you see the pump gear.

You could also be seeing a fault in the electrics, like a loose battery
cable. but I don't have any info on the 2001. I have had a similar thing
with tick/ping/etc and it was due to a loose battery cable.

I also wonder if the newer compooter will put the Jeep in limp mode based
on oil pressure. Any codes?

> matt borland wrote:
>>
>> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>>
>> The Incident: Driving along, suddenly there's engine light,
>> followed by check guages light, accompanied by ticking
>> from top end and no oil pressure reading on the guage.
>>
>> I shut it off and cruise to a good pull-off spot. Pop the hood,
>> check the oil, plenty there and not too bad looking either.
>>
>> The Most Obvious Diagnosis: Oil Pump Died.
>>
>> Anybody here experienced this or heard about it? It just
>> seems odd that the usually indestructible 4.0L in one of
>> it's latest and finest forms would take a dump this early
>> in it's service life. I've had others that are still running around
>> at 160k+, hence I bought another one with low miles with
>> the intention of driving it for a long time.
>>
>> I'm headed to the alldata site to see if there's a TSB...
>>
>> -Matt-

 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Matt,
> Nope, never heard of it, only when the distributor shaft seizes and
> breaks the drive gear, which of coarse kills the engine, or drive rod on
> other types of engines. Pull the distributor and you can find something
> broken. Then use a large screwdriver bit on a drill and spin the pump
> and see what happens. Been a little lax on the oil changes lately?

Only thing that pops into my widdle mind is the pickup tube falling off
but that's not very likely since IIRC it's got a bolt holding it into
that engine. Howmever... You could pull the distributor and check the
drive spline just be be sure. That will let you see the pump gear.

You could also be seeing a fault in the electrics, like a loose battery
cable. but I don't have any info on the 2001. I have had a similar thing
with tick/ping/etc and it was due to a loose battery cable.

I also wonder if the newer compooter will put the Jeep in limp mode based
on oil pressure. Any codes?

> matt borland wrote:
>>
>> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>>
>> The Incident: Driving along, suddenly there's engine light,
>> followed by check guages light, accompanied by ticking
>> from top end and no oil pressure reading on the guage.
>>
>> I shut it off and cruise to a good pull-off spot. Pop the hood,
>> check the oil, plenty there and not too bad looking either.
>>
>> The Most Obvious Diagnosis: Oil Pump Died.
>>
>> Anybody here experienced this or heard about it? It just
>> seems odd that the usually indestructible 4.0L in one of
>> it's latest and finest forms would take a dump this early
>> in it's service life. I've had others that are still running around
>> at 160k+, hence I bought another one with low miles with
>> the intention of driving it for a long time.
>>
>> I'm headed to the alldata site to see if there's a TSB...
>>
>> -Matt-

 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Matt,
> Nope, never heard of it, only when the distributor shaft seizes and
> breaks the drive gear, which of coarse kills the engine, or drive rod on
> other types of engines. Pull the distributor and you can find something
> broken. Then use a large screwdriver bit on a drill and spin the pump
> and see what happens. Been a little lax on the oil changes lately?

Only thing that pops into my widdle mind is the pickup tube falling off
but that's not very likely since IIRC it's got a bolt holding it into
that engine. Howmever... You could pull the distributor and check the
drive spline just be be sure. That will let you see the pump gear.

You could also be seeing a fault in the electrics, like a loose battery
cable. but I don't have any info on the 2001. I have had a similar thing
with tick/ping/etc and it was due to a loose battery cable.

I also wonder if the newer compooter will put the Jeep in limp mode based
on oil pressure. Any codes?

> matt borland wrote:
>>
>> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>>
>> The Incident: Driving along, suddenly there's engine light,
>> followed by check guages light, accompanied by ticking
>> from top end and no oil pressure reading on the guage.
>>
>> I shut it off and cruise to a good pull-off spot. Pop the hood,
>> check the oil, plenty there and not too bad looking either.
>>
>> The Most Obvious Diagnosis: Oil Pump Died.
>>
>> Anybody here experienced this or heard about it? It just
>> seems odd that the usually indestructible 4.0L in one of
>> it's latest and finest forms would take a dump this early
>> in it's service life. I've had others that are still running around
>> at 160k+, hence I bought another one with low miles with
>> the intention of driving it for a long time.
>>
>> I'm headed to the alldata site to see if there's a TSB...
>>
>> -Matt-

 

L.W. ("ßill") ------ III did pass the time by typing:
> Hi Matt,
> Nope, never heard of it, only when the distributor shaft seizes and
> breaks the drive gear, which of coarse kills the engine, or drive rod on
> other types of engines. Pull the distributor and you can find something
> broken. Then use a large screwdriver bit on a drill and spin the pump
> and see what happens. Been a little lax on the oil changes lately?

Only thing that pops into my widdle mind is the pickup tube falling off
but that's not very likely since IIRC it's got a bolt holding it into
that engine. Howmever... You could pull the distributor and check the
drive spline just be be sure. That will let you see the pump gear.

You could also be seeing a fault in the electrics, like a loose battery
cable. but I don't have any info on the 2001. I have had a similar thing
with tick/ping/etc and it was due to a loose battery cable.

I also wonder if the newer compooter will put the Jeep in limp mode based
on oil pressure. Any codes?

> matt borland wrote:
>>
>> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>>
>> The Incident: Driving along, suddenly there's engine light,
>> followed by check guages light, accompanied by ticking
>> from top end and no oil pressure reading on the guage.
>>
>> I shut it off and cruise to a good pull-off spot. Pop the hood,
>> check the oil, plenty there and not too bad looking either.
>>
>> The Most Obvious Diagnosis: Oil Pump Died.
>>
>> Anybody here experienced this or heard about it? It just
>> seems odd that the usually indestructible 4.0L in one of
>> it's latest and finest forms would take a dump this early
>> in it's service life. I've had others that are still running around
>> at 160k+, hence I bought another one with low miles with
>> the intention of driving it for a long time.
>>
>> I'm headed to the alldata site to see if there's a TSB...
>>
>> -Matt-

 

As Bill says, the drive mechanism can break. I have also seen the oil
pickup break off and fall into the sump. If you stopped when there was only
ticking from the top end, there is the possibility that you saved it.

This could have been a plain old defective part, and there may be no TSB.
My advice is pull the pan, pull the pump, and try to figure out what
happened.

Earle

"matt borland" <mborland@columbus.rr.com> wrote in message
news:xHsOe.20140$2Q3.15820@tornado.ohiordc.rr.com. ..
> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>
> The Incident: Driving along, suddenly there's engine light,
> followed by check guages light, accompanied by ticking
> from top end and no oil pressure reading on the guage.
>
> I shut it off and cruise to a good pull-off spot. Pop the hood,
> check the oil, plenty there and not too bad looking either.
>
>
> The Most Obvious Diagnosis: Oil Pump Died.
>
>
> Anybody here experienced this or heard about it? It just
> seems odd that the usually indestructible 4.0L in one of
> it's latest and finest forms would take a dump this early
> in it's service life. I've had others that are still running around
> at 160k+, hence I bought another one with low miles with
> the intention of driving it for a long time.
>
>
> I'm headed to the alldata site to see if there's a TSB...
>
>
>
> -Matt-
>
>

 

As Bill says, the drive mechanism can break. I have also seen the oil
pickup break off and fall into the sump. If you stopped when there was only
ticking from the top end, there is the possibility that you saved it.

This could have been a plain old defective part, and there may be no TSB.
My advice is pull the pan, pull the pump, and try to figure out what
happened.

Earle

"matt borland" <mborland@columbus.rr.com> wrote in message
news:xHsOe.20140$2Q3.15820@tornado.ohiordc.rr.com. ..
> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>
> The Incident: Driving along, suddenly there's engine light,
> followed by check guages light, accompanied by ticking
> from top end and no oil pressure reading on the guage.
>
> I shut it off and cruise to a good pull-off spot. Pop the hood,
> check the oil, plenty there and not too bad looking either.
>
>
> The Most Obvious Diagnosis: Oil Pump Died.
>
>
> Anybody here experienced this or heard about it? It just
> seems odd that the usually indestructible 4.0L in one of
> it's latest and finest forms would take a dump this early
> in it's service life. I've had others that are still running around
> at 160k+, hence I bought another one with low miles with
> the intention of driving it for a long time.
>
>
> I'm headed to the alldata site to see if there's a TSB...
>
>
>
> -Matt-
>
>

 

As Bill says, the drive mechanism can break. I have also seen the oil
pickup break off and fall into the sump. If you stopped when there was only
ticking from the top end, there is the possibility that you saved it.

This could have been a plain old defective part, and there may be no TSB.
My advice is pull the pan, pull the pump, and try to figure out what
happened.

Earle

"matt borland" <mborland@columbus.rr.com> wrote in message
news:xHsOe.20140$2Q3.15820@tornado.ohiordc.rr.com. ..
> The Jeep: 48000mi 2001 Cherokee Sport, 4.0L Auto.
>
> The Incident: Driving along, suddenly there's engine light,
> followed by check guages light, accompanied by ticking
> from top end and no oil pressure reading on the guage.
>
> I shut it off and cruise to a good pull-off spot. Pop the hood,
> check the oil, plenty there and not too bad looking either.
>
>
> The Most Obvious Diagnosis: Oil Pump Died.
>
>
> Anybody here experienced this or heard about it? It just
> seems odd that the usually indestructible 4.0L in one of
> it's latest and finest forms would take a dump this early
> in it's service life. I've had others that are still running around
> at 160k+, hence I bought another one with low miles with
> the intention of driving it for a long time.
>
>
> I'm headed to the alldata site to see if there's a TSB...
>
>
>
> -Matt-
>
>