Well, one reason is that I was hoping it was a sticky valve, so I flushed
the engine oil, replaced the oil and did a fuel system flush. But of course
that didn't work.
"twaldron" <thomas@OBVIOUSrubicons.com> wrote in message
news:16AWc.4871$ch2.3380@newssvr23.news.prodigy.co m...
> Just curious as to why you would drive it for a couple of days with a
> dead cylinder, and then continue to repeat the process.
>
> F.D.S. wrote:
> > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to die
with
> > no apparent warning and after driving a couple of days decides to come
alive
> > again. When cylinder is dead I get trouble code 43. I had almost
replaced
> > the engine which was gonna cost me $3200 for a new engine from Jeep with
36K
> > mile/ 36 moths warranty. However, this just boggles me now as the
cylinder
> > seems to work when it wants and goes dead the same way. No warning, no
> > stalling, just dies and then come alive in a couple of days. What could
this
> > be? TIA.
> > Fernan
> >
> >
>
> --
> __________________________________________________ _________
> tw
>
> 03 TJ Rubicon - Rubicon Express 4.5"
> 01 XJ Sport
>
> There is a very fine line between "hobby" and "mental illness."
> -- Dave Barry
>
> Pronunciation: 'jEp
> Function: noun
> Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80-inch wheelbase,
> 1/4-ton capacity, and four-wheel drive used by the U.S. army in
> World War II.
>
> (Please remove the OBVIOUS to reply by email)
> __________________________________________________ _________
>

 

I hear ya. I was taking a chance, and was ready to replace the engine
anyways if it did croak. I was hoping that it was just something that could
be fixed by replacing fluids.
"Paul Calman" <spam@trap.com> wrote in message
news:2p03b4Ff817iU1@uni-berlin.de...
> > Just curious as to why you would drive it for a couple of days with a
> > dead cylinder, and then continue to repeat the process.
>
> Yeah, not much info here. Have you tested the compression? is it a bad
plug
> wire? How many miles are on it? Could a valve be sticking? Engines seldom
> heal, so hoping it goes away and driving on usually makes things worse.
>
> --
> Paul Calman, Hathaway Pines, California
>
>

 

I hear ya. I was taking a chance, and was ready to replace the engine
anyways if it did croak. I was hoping that it was just something that could
be fixed by replacing fluids.
"Paul Calman" <spam@trap.com> wrote in message
news:2p03b4Ff817iU1@uni-berlin.de...
> > Just curious as to why you would drive it for a couple of days with a
> > dead cylinder, and then continue to repeat the process.
>
> Yeah, not much info here. Have you tested the compression? is it a bad
plug
> wire? How many miles are on it? Could a valve be sticking? Engines seldom
> heal, so hoping it goes away and driving on usually makes things worse.
>
> --
> Paul Calman, Hathaway Pines, California
>
>

 

I hear ya. I was taking a chance, and was ready to replace the engine
anyways if it did croak. I was hoping that it was just something that could
be fixed by replacing fluids.
"Paul Calman" <spam@trap.com> wrote in message
news:2p03b4Ff817iU1@uni-berlin.de...
> > Just curious as to why you would drive it for a couple of days with a
> > dead cylinder, and then continue to repeat the process.
>
> Yeah, not much info here. Have you tested the compression? is it a bad
plug
> wire? How many miles are on it? Could a valve be sticking? Engines seldom
> heal, so hoping it goes away and driving on usually makes things worse.
>
> --
> Paul Calman, Hathaway Pines, California
>
>

 

Heck, I didn't know I was doing that..Live and learn.
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:412AE0A2.7BE996F1@***.net...
> Fault Code 43: Ignition coil driver circuit open or shorted:
> http://minimopar.knizefamily.net/fault/code43.html
> Why are you driving it around washing the lubricate from your
> cylinders with raw gasoline?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> "F.D.S." wrote:
> >
> > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to die
with
> > no apparent warning and after driving a couple of days decides to come
alive
> > again. When cylinder is dead I get trouble code 43. I had almost
replaced
> > the engine which was gonna cost me $3200 for a new engine from Jeep with
36K
> > mile/ 36 moths warranty. However, this just boggles me now as the
cylinder
> > seems to work when it wants and goes dead the same way. No warning, no
> > stalling, just dies and then come alive in a couple of days. What could
this
> > be? TIA.
> > Fernan

 

Heck, I didn't know I was doing that..Live and learn.
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:412AE0A2.7BE996F1@***.net...
> Fault Code 43: Ignition coil driver circuit open or shorted:
> http://minimopar.knizefamily.net/fault/code43.html
> Why are you driving it around washing the lubricate from your
> cylinders with raw gasoline?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> "F.D.S." wrote:
> >
> > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to die
with
> > no apparent warning and after driving a couple of days decides to come
alive
> > again. When cylinder is dead I get trouble code 43. I had almost
replaced
> > the engine which was gonna cost me $3200 for a new engine from Jeep with
36K
> > mile/ 36 moths warranty. However, this just boggles me now as the
cylinder
> > seems to work when it wants and goes dead the same way. No warning, no
> > stalling, just dies and then come alive in a couple of days. What could
this
> > be? TIA.
> > Fernan

 

Heck, I didn't know I was doing that..Live and learn.
"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:412AE0A2.7BE996F1@***.net...
> Fault Code 43: Ignition coil driver circuit open or shorted:
> http://minimopar.knizefamily.net/fault/code43.html
> Why are you driving it around washing the lubricate from your
> cylinders with raw gasoline?
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> "F.D.S." wrote:
> >
> > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to die
with
> > no apparent warning and after driving a couple of days decides to come
alive
> > again. When cylinder is dead I get trouble code 43. I had almost
replaced
> > the engine which was gonna cost me $3200 for a new engine from Jeep with
36K
> > mile/ 36 moths warranty. However, this just boggles me now as the
cylinder
> > seems to work when it wants and goes dead the same way. No warning, no
> > stalling, just dies and then come alive in a couple of days. What could
this
> > be? TIA.
> > Fernan

 

I bought the new stronger version of the valve springs (as well as new valve
stem seals while we were underneath the valve cover) from the dealer for
what seems like $80 or so. Then I paid a local mechanic $150 to swap the
valve springs and valve stem seals. Voila, no more '43' codes. Mine was
especially bad, I could get as many as three '43' codes at once... as in 12
43 43 43 55.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"F.D.S." <no_spam@no.mail.com> wrote in message
news:38SdnQSpW6DmnLHcRVn-jQ@adelphia.com...
> Jerry,
> Thanx for the info. I will take it to the dealership. One question: how
much
> did it cost you to get it fixed? TIA.
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:soBWc.130881$sh.94469@fed1read06...
> > F.D.S., Jeep came out with a TSB to fix this problem that occurred
during
> > the '96 to '98 model year on the 4.0L engine. It's actually a misfire
> > condition that is caused by valve float caused by a bad batch of weak
> valve
> > springs during those two model years. The fix is to replace the valve
> > springs with the newer/stronger valve springs with a new p/n. Your
dealer
> > will have the TSB information. No amount of replacing ignition parts,
> fuel
> > injectors, etc. will help. Ask me how I know about that last point? ;)
> >
> > Jerry
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:412AE0A2.7BE996F1@***.net...
> > > Fault Code 43: Ignition coil driver circuit open or shorted:
> > > http://minimopar.knizefamily.net/fault/code43.html
> > > Why are you driving it around washing the lubricate from your
> > > cylinders with raw gasoline?
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > "F.D.S." wrote:
> > > >
> > > > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to
> die
> > with
> > > > no apparent warning and after driving a couple of days decides to
come
> > alive
> > > > again. When cylinder is dead I get trouble code 43. I had almost
> > replaced
> > > > the engine which was gonna cost me $3200 for a new engine from Jeep
> with
> > 36K
> > > > mile/ 36 moths warranty. However, this just boggles me now as the
> > cylinder
> > > > seems to work when it wants and goes dead the same way. No warning,
no
> > > > stalling, just dies and then come alive in a couple of days. What
> could
> > this
> > > > be? TIA.
> > > > Fernan
> >
> >
>
>

 

I bought the new stronger version of the valve springs (as well as new valve
stem seals while we were underneath the valve cover) from the dealer for
what seems like $80 or so. Then I paid a local mechanic $150 to swap the
valve springs and valve stem seals. Voila, no more '43' codes. Mine was
especially bad, I could get as many as three '43' codes at once... as in 12
43 43 43 55.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"F.D.S." <no_spam@no.mail.com> wrote in message
news:38SdnQSpW6DmnLHcRVn-jQ@adelphia.com...
> Jerry,
> Thanx for the info. I will take it to the dealership. One question: how
much
> did it cost you to get it fixed? TIA.
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:soBWc.130881$sh.94469@fed1read06...
> > F.D.S., Jeep came out with a TSB to fix this problem that occurred
during
> > the '96 to '98 model year on the 4.0L engine. It's actually a misfire
> > condition that is caused by valve float caused by a bad batch of weak
> valve
> > springs during those two model years. The fix is to replace the valve
> > springs with the newer/stronger valve springs with a new p/n. Your
dealer
> > will have the TSB information. No amount of replacing ignition parts,
> fuel
> > injectors, etc. will help. Ask me how I know about that last point? ;)
> >
> > Jerry
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:412AE0A2.7BE996F1@***.net...
> > > Fault Code 43: Ignition coil driver circuit open or shorted:
> > > http://minimopar.knizefamily.net/fault/code43.html
> > > Why are you driving it around washing the lubricate from your
> > > cylinders with raw gasoline?
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > "F.D.S." wrote:
> > > >
> > > > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to
> die
> > with
> > > > no apparent warning and after driving a couple of days decides to
come
> > alive
> > > > again. When cylinder is dead I get trouble code 43. I had almost
> > replaced
> > > > the engine which was gonna cost me $3200 for a new engine from Jeep
> with
> > 36K
> > > > mile/ 36 moths warranty. However, this just boggles me now as the
> > cylinder
> > > > seems to work when it wants and goes dead the same way. No warning,
no
> > > > stalling, just dies and then come alive in a couple of days. What
> could
> > this
> > > > be? TIA.
> > > > Fernan
> >
> >
>
>

 

I bought the new stronger version of the valve springs (as well as new valve
stem seals while we were underneath the valve cover) from the dealer for
what seems like $80 or so. Then I paid a local mechanic $150 to swap the
valve springs and valve stem seals. Voila, no more '43' codes. Mine was
especially bad, I could get as many as three '43' codes at once... as in 12
43 43 43 55.

Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"F.D.S." <no_spam@no.mail.com> wrote in message
news:38SdnQSpW6DmnLHcRVn-jQ@adelphia.com...
> Jerry,
> Thanx for the info. I will take it to the dealership. One question: how
much
> did it cost you to get it fixed? TIA.
>
> "Jerry Bransford" <jerrypb@***.net> wrote in message
> news:soBWc.130881$sh.94469@fed1read06...
> > F.D.S., Jeep came out with a TSB to fix this problem that occurred
during
> > the '96 to '98 model year on the 4.0L engine. It's actually a misfire
> > condition that is caused by valve float caused by a bad batch of weak
> valve
> > springs during those two model years. The fix is to replace the valve
> > springs with the newer/stronger valve springs with a new p/n. Your
dealer
> > will have the TSB information. No amount of replacing ignition parts,
> fuel
> > injectors, etc. will help. Ask me how I know about that last point? ;)
> >
> > Jerry
> > --
> > Jerry Bransford
> > PP-ASEL N6TAY
> > See the Geezer Jeep at
> > http://members.***.net/jerrypb/
> > "L.W. (ßill) ------ III" <----------@***.net> wrote in message
> > news:412AE0A2.7BE996F1@***.net...
> > > Fault Code 43: Ignition coil driver circuit open or shorted:
> > > http://minimopar.knizefamily.net/fault/code43.html
> > > Why are you driving it around washing the lubricate from your
> > > cylinders with raw gasoline?
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > "F.D.S." wrote:
> > > >
> > > > Hi all. I have a 1996 JGC Laredo I-6 4.0L 4x4. Cylinder #6 seems to
> die
> > with
> > > > no apparent warning and after driving a couple of days decides to
come
> > alive
> > > > again. When cylinder is dead I get trouble code 43. I had almost
> > replaced
> > > > the engine which was gonna cost me $3200 for a new engine from Jeep
> with
> > 36K
> > > > mile/ 36 moths warranty. However, this just boggles me now as the
> > cylinder
> > > > seems to work when it wants and goes dead the same way. No warning,
no
> > > > stalling, just dies and then come alive in a couple of days. What
> could
> > this
> > > > be? TIA.
> > > > Fernan
> >
> >
>
>