Jeep Wrangler Cuts Out, Need some advice
 

Can someone point me in the right direction?

After driving an extended distance at highway speed, my 1991 Jeep
Wrangler cuts off. At first it will sputter like I've put a bad tank
of gas in (I have ran through a couple tanks, plus put in fuel injector
additive and that makes no difference). Then usually a few seconds
later it cuts out. When I pull over it cranks right up, and runs
great, like nothing is wrong. Then after 20 or 30 additional miles it
does the same thing.

No check engine light comes on.

Any ideas? By the way it has the 4.0L if that makes any difference.

Phil

Re: Jeep Wrangler Cuts Out, Need some advice
 

You are likely describing a dirty connection on the CPS plug and
socked. The CPS is located on the top drivers side of the bell
housing. I use a spray contact cleaner on them with great success.

A rotted or dirty connectioned ground strap that runs from the back of
the engine head up to the firewall can also cause stalls like that.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Mariner15 wrote:
>
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil

Re: Jeep Wrangler Cuts Out, Need some advice
 

You are likely describing a dirty connection on the CPS plug and
socked. The CPS is located on the top drivers side of the bell
housing. I use a spray contact cleaner on them with great success.

A rotted or dirty connectioned ground strap that runs from the back of
the engine head up to the firewall can also cause stalls like that.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Mariner15 wrote:
>
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil

Re: Jeep Wrangler Cuts Out, Need some advice
 

You are likely describing a dirty connection on the CPS plug and
socked. The CPS is located on the top drivers side of the bell
housing. I use a spray contact cleaner on them with great success.

A rotted or dirty connectioned ground strap that runs from the back of
the engine head up to the firewall can also cause stalls like that.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Mariner15 wrote:
>
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil

Re: Jeep Wrangler Cuts Out, Need some advice
 

You are likely describing a dirty connection on the CPS plug and
socked. The CPS is located on the top drivers side of the bell
housing. I use a spray contact cleaner on them with great success.

A rotted or dirty connectioned ground strap that runs from the back of
the engine head up to the firewall can also cause stalls like that.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Mariner15 wrote:
>
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil

Re: Jeep Wrangler Cuts Out, Need some advice
 

How long since you've replaced the fuel filter?

Jeff DeWitt

Mariner15 wrote:
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil
>

Re: Jeep Wrangler Cuts Out, Need some advice
 

How long since you've replaced the fuel filter?

Jeff DeWitt

Mariner15 wrote:
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil
>

Re: Jeep Wrangler Cuts Out, Need some advice
 

How long since you've replaced the fuel filter?

Jeff DeWitt

Mariner15 wrote:
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil
>

Re: Jeep Wrangler Cuts Out, Need some advice
 

How long since you've replaced the fuel filter?

Jeff DeWitt

Mariner15 wrote:
> Can someone point me in the right direction?
>
> After driving an extended distance at highway speed, my 1991 Jeep
> Wrangler cuts off. At first it will sputter like I've put a bad tank
> of gas in (I have ran through a couple tanks, plus put in fuel injector
> additive and that makes no difference). Then usually a few seconds
> later it cuts out. When I pull over it cranks right up, and runs
> great, like nothing is wrong. Then after 20 or 30 additional miles it
> does the same thing.
>
> No check engine light comes on.
>
> Any ideas? By the way it has the 4.0L if that makes any difference.
>
> Phil
>

Re: Jeep Wrangler Cuts Out, Need some advice
 

My '89 YJ 4.2 was doing similar
things. It turned out for me to be the
ignition module. I didn't find out till
it completely failed. In the beginning
it would just shut down. I would roll
to a stop and it would start right
up again. Till the next time!!!
Joe


"Jeff DeWitt" <JeffDeWitt@nc.rr.com> wrote in message
news:am9Dg.33775$so3.15672@southeast.rr.com...
> How long since you've replaced the fuel filter?
>
> Jeff DeWitt
>
> Mariner15 wrote:
> > Can someone point me in the right direction?
> >
> > After driving an extended distance at highway speed, my 1991 Jeep
> > Wrangler cuts off. At first it will sputter like I've put a bad tank
> > of gas in (I have ran through a couple tanks, plus put in fuel injector
> > additive and that makes no difference). Then usually a few seconds
> > later it cuts out. When I pull over it cranks right up, and runs
> > great, like nothing is wrong. Then after 20 or 30 additional miles it
> > does the same thing.
> >
> > No check engine light comes on.
> >
> > Any ideas? By the way it has the 4.0L if that makes any difference.
> >
> > Phil
> >