did u check for fault coedes???

Dave Milne wrote:

> Have you removed the petrol tank cap and listened for a hissing noise
> indicating it is vaccuming ?
>
> Alternatively, it may be a blocked return to the fuel tank or a duff
> pressure regulator valve. Do you hear a funny noise from the fuel pump
> trying to run against a blockage ? It sounds a bit like a wailing noise.
>
> Dave
>
> "msgrace" <gracemrs@***.net> wrote in message
> news:06332ab120e2cf046d6bc3cc701cc59d@localhost.ta lkaboutautos.com...
> > At times it will just cut out dead and sometimes it will start right back
> > up and other times it take a few minutes before it starts back up. Then
> > if it doesn't kill on me it will sputter and try to kill and I have to
> > keep pumping the gas peddal to keep it from killing, sometimes it works
> > sometimes it doesn't. Thanks for all the help everyone is giving me
> > because I am at my wits end.
> >
> > Grace
> >

 

At first it wasn't reading any fault codes except for when the battery was
disconnected. But day before yesterday it started reading code 43 and I
know in the Haynes it stands for "multiple cylinder mis-fires". I've had
been paying close attention to when my Jeep goes to kill while I am
driving and it seems that when I hit speeds between 30 and 40 mph that is
when it kills or tries to kill. But long as I am parked/stopped it
doesn't. It is so odd, I have never had a truck do this to me before.

Grace

 

At first it wasn't reading any fault codes except for when the battery was
disconnected. But day before yesterday it started reading code 43 and I
know in the Haynes it stands for "multiple cylinder mis-fires". I've had
been paying close attention to when my Jeep goes to kill while I am
driving and it seems that when I hit speeds between 30 and 40 mph that is
when it kills or tries to kill. But long as I am parked/stopped it
doesn't. It is so odd, I have never had a truck do this to me before.

Grace

 

At first it wasn't reading any fault codes except for when the battery was
disconnected. But day before yesterday it started reading code 43 and I
know in the Haynes it stands for "multiple cylinder mis-fires". I've had
been paying close attention to when my Jeep goes to kill while I am
driving and it seems that when I hit speeds between 30 and 40 mph that is
when it kills or tries to kill. But long as I am parked/stopped it
doesn't. It is so odd, I have never had a truck do this to me before.

Grace

 

Just out of curiosity, how much gas was in the tank whenever this
happened? 1/4 tank or less, maybe?

The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
falter or momentarily stop pumping at a 1/4 tank or lower, when
accelerating or when making sharp left turns. Sometimes the engine
would just die in traffic, causing a few accidents, or the engine would
go dry for a few seconds and kick back in (just before you got
rear-ended). I've had two '97s, and both suffered the problem. Dealer
changed the pump 2x on the first one - the first tme they used another
defective pump assembly - I'm about to take in the second one for the
same repair.

HTH,

Doug Gavilanes
Garden Grove, CA.


msgrace wrote:
> At first it wasn't reading any fault codes except for when the battery was
> disconnected. But day before yesterday it started reading code 43 and I
> know in the Haynes it stands for "multiple cylinder mis-fires". I've had
> been paying close attention to when my Jeep goes to kill while I am
> driving and it seems that when I hit speeds between 30 and 40 mph that is
> when it kills or tries to kill. But long as I am parked/stopped it
> doesn't. It is so odd, I have never had a truck do this to me before.
>
> Grace
>

 

Just out of curiosity, how much gas was in the tank whenever this
happened? 1/4 tank or less, maybe?

The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
falter or momentarily stop pumping at a 1/4 tank or lower, when
accelerating or when making sharp left turns. Sometimes the engine
would just die in traffic, causing a few accidents, or the engine would
go dry for a few seconds and kick back in (just before you got
rear-ended). I've had two '97s, and both suffered the problem. Dealer
changed the pump 2x on the first one - the first tme they used another
defective pump assembly - I'm about to take in the second one for the
same repair.

HTH,

Doug Gavilanes
Garden Grove, CA.


msgrace wrote:
> At first it wasn't reading any fault codes except for when the battery was
> disconnected. But day before yesterday it started reading code 43 and I
> know in the Haynes it stands for "multiple cylinder mis-fires". I've had
> been paying close attention to when my Jeep goes to kill while I am
> driving and it seems that when I hit speeds between 30 and 40 mph that is
> when it kills or tries to kill. But long as I am parked/stopped it
> doesn't. It is so odd, I have never had a truck do this to me before.
>
> Grace
>

 

Just out of curiosity, how much gas was in the tank whenever this
happened? 1/4 tank or less, maybe?

The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
falter or momentarily stop pumping at a 1/4 tank or lower, when
accelerating or when making sharp left turns. Sometimes the engine
would just die in traffic, causing a few accidents, or the engine would
go dry for a few seconds and kick back in (just before you got
rear-ended). I've had two '97s, and both suffered the problem. Dealer
changed the pump 2x on the first one - the first tme they used another
defective pump assembly - I'm about to take in the second one for the
same repair.

HTH,

Doug Gavilanes
Garden Grove, CA.


msgrace wrote:
> At first it wasn't reading any fault codes except for when the battery was
> disconnected. But day before yesterday it started reading code 43 and I
> know in the Haynes it stands for "multiple cylinder mis-fires". I've had
> been paying close attention to when my Jeep goes to kill while I am
> driving and it seems that when I hit speeds between 30 and 40 mph that is
> when it kills or tries to kill. But long as I am parked/stopped it
> doesn't. It is so odd, I have never had a truck do this to me before.
>
> Grace
>

 

Doug Gavilanes wrote:
> Just out of curiosity, how much gas was in the tank whenever this
> happened? 1/4 tank or less, maybe?
>
> The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
> falter or momentarily stop pumping at a 1/4 tank or lower, when
> accelerating or when making sharp left turns. Sometimes the engine
> would just die in traffic, causing a few accidents, or the engine would
> go dry for a few seconds and kick back in (just before you got
> rear-ended). I've had two '97s, and both suffered the problem. Dealer
> changed the pump 2x on the first one - the first tme they used another
> defective pump assembly - I'm about to take in the second one for the
> same repair.


I just replaced my fuel pump. I've had it do that when turning left
with a 1/4 tank. I've also had it not start right up, stall out
after starting and taking a long time to start. If you can handle it,
a new pump for a '97 TJ is $99 at Pep Boys, $220 at Papa and $420
at the $tealership.

 

Doug Gavilanes wrote:
> Just out of curiosity, how much gas was in the tank whenever this
> happened? 1/4 tank or less, maybe?
>
> The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
> falter or momentarily stop pumping at a 1/4 tank or lower, when
> accelerating or when making sharp left turns. Sometimes the engine
> would just die in traffic, causing a few accidents, or the engine would
> go dry for a few seconds and kick back in (just before you got
> rear-ended). I've had two '97s, and both suffered the problem. Dealer
> changed the pump 2x on the first one - the first tme they used another
> defective pump assembly - I'm about to take in the second one for the
> same repair.


I just replaced my fuel pump. I've had it do that when turning left
with a 1/4 tank. I've also had it not start right up, stall out
after starting and taking a long time to start. If you can handle it,
a new pump for a '97 TJ is $99 at Pep Boys, $220 at Papa and $420
at the $tealership.

 

Doug Gavilanes wrote:
> Just out of curiosity, how much gas was in the tank whenever this
> happened? 1/4 tank or less, maybe?
>
> The '97 4.0L ZJs had a TSB to replace faulty fuel pumps that would
> falter or momentarily stop pumping at a 1/4 tank or lower, when
> accelerating or when making sharp left turns. Sometimes the engine
> would just die in traffic, causing a few accidents, or the engine would
> go dry for a few seconds and kick back in (just before you got
> rear-ended). I've had two '97s, and both suffered the problem. Dealer
> changed the pump 2x on the first one - the first tme they used another
> defective pump assembly - I'm about to take in the second one for the
> same repair.


I just replaced my fuel pump. I've had it do that when turning left
with a 1/4 tank. I've also had it not start right up, stall out
after starting and taking a long time to start. If you can handle it,
a new pump for a '97 TJ is $99 at Pep Boys, $220 at Papa and $420
at the $tealership.