Another Idle problem, '89 YJ 4.2
 

My '89 YJ was never the best at idling. In the past
I've cleaned out the idle tubes, had my carter rebuilt,
and so on.. Now without goosing the gas, it won't idle
at all. It goes right to stall. At hiway speed it runs great.
You guys have always helped me in the past.What do
ya think?

Thanks,
Joe

Re: Another Idle problem, '89 YJ 4.2
 

I have had the same problem with my '87 YJ and I noticed a leak in the
Air intake manifold gaskit. Once I replaced that, it idled great at
the stoplight(s).

"Joe C" <no-more-spam@no-spam.com> wrote in message news:<75IOb.7473$OM2.2322098@news4.srv.hcvlny.cv.n et>...
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

I have had the same problem with my '87 YJ and I noticed a leak in the
Air intake manifold gaskit. Once I replaced that, it idled great at
the stoplight(s).

"Joe C" <no-more-spam@no-spam.com> wrote in message news:<75IOb.7473$OM2.2322098@news4.srv.hcvlny.cv.n et>...
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

I have had the same problem with my '87 YJ and I noticed a leak in the
Air intake manifold gaskit. Once I replaced that, it idled great at
the stoplight(s).

"Joe C" <no-more-spam@no-spam.com> wrote in message news:<75IOb.7473$OM2.2322098@news4.srv.hcvlny.cv.n et>...
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

I would be checking the idle tubes again. Those buggers like to plug up
again and again.

I oversized mine and they still plugged up again.

I then got smart and cleaned the gas line from the filter to the carb!
It had tons of junk in it that was just getting back into the carb.

One year and counting since my last idle tube clean, knocking on
wood....

If you just remove the choke butterfly, the venturi cluster can be
pulled out the top and the tubes cleaned.

Here is a good link on the test and fix for the idle tubes.

http://www.off-road.com/jeep/tech/engine/carter.html

I will bet if you check at idle, there is nothing coming out of the
venturis.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Joe C wrote:
>
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

I would be checking the idle tubes again. Those buggers like to plug up
again and again.

I oversized mine and they still plugged up again.

I then got smart and cleaned the gas line from the filter to the carb!
It had tons of junk in it that was just getting back into the carb.

One year and counting since my last idle tube clean, knocking on
wood....

If you just remove the choke butterfly, the venturi cluster can be
pulled out the top and the tubes cleaned.

Here is a good link on the test and fix for the idle tubes.

http://www.off-road.com/jeep/tech/engine/carter.html

I will bet if you check at idle, there is nothing coming out of the
venturis.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Joe C wrote:
>
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

I would be checking the idle tubes again. Those buggers like to plug up
again and again.

I oversized mine and they still plugged up again.

I then got smart and cleaned the gas line from the filter to the carb!
It had tons of junk in it that was just getting back into the carb.

One year and counting since my last idle tube clean, knocking on
wood....

If you just remove the choke butterfly, the venturi cluster can be
pulled out the top and the tubes cleaned.

Here is a good link on the test and fix for the idle tubes.

http://www.off-road.com/jeep/tech/engine/carter.html

I will bet if you check at idle, there is nothing coming out of the
venturis.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Joe C wrote:
>
> My '89 YJ was never the best at idling. In the past
> I've cleaned out the idle tubes, had my carter rebuilt,
> and so on.. Now without goosing the gas, it won't idle
> at all. It goes right to stall. At hiway speed it runs great.
> You guys have always helped me in the past.What do
> ya think?
>
> Thanks,
> Joe

Re: Another Idle problem, '89 YJ 4.2
 

Mike Romain wrote:
> I would be checking the idle tubes again. Those buggers like to plug up
> again and again.

BTW I meant to tell you I used your advice on my friends Jeep (an 88 YJ
Sahara which I asked for advice on here this past summer) before I got
my own Jeep. Removed choke plate, yanked venturi cluster out, cleaned
idle tubes, also sprayed all the passages out with carb cleaner, and
replaced the gasket the cluster sits on.

Turns out the two screws that hold the venturi cluster down were very
loose, the gasket seemed unseated and goosing the gas (like you might do
starting out in first gear) caused a bog down or stall. I think air was
getting sucked in at the gasket (or a part of the gasket was getting
sucked in). Anyway great advice; my friend (he's also my Boss) was quite
happy that his Jeep runs a ---- load better. The difference between
stalling as you start out at a stop sign (dangerous to say the least
when leaves to dead in the middle of an intersection) and running smooth
after the fix is sweet.

--
Simon
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: Another Idle problem, '89 YJ 4.2
 

Mike Romain wrote:
> I would be checking the idle tubes again. Those buggers like to plug up
> again and again.

BTW I meant to tell you I used your advice on my friends Jeep (an 88 YJ
Sahara which I asked for advice on here this past summer) before I got
my own Jeep. Removed choke plate, yanked venturi cluster out, cleaned
idle tubes, also sprayed all the passages out with carb cleaner, and
replaced the gasket the cluster sits on.

Turns out the two screws that hold the venturi cluster down were very
loose, the gasket seemed unseated and goosing the gas (like you might do
starting out in first gear) caused a bog down or stall. I think air was
getting sucked in at the gasket (or a part of the gasket was getting
sucked in). Anyway great advice; my friend (he's also my Boss) was quite
happy that his Jeep runs a ---- load better. The difference between
stalling as you start out at a stop sign (dangerous to say the least
when leaves to dead in the middle of an intersection) and running smooth
after the fix is sweet.

--
Simon
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein

Re: Another Idle problem, '89 YJ 4.2
 

Mike Romain wrote:
> I would be checking the idle tubes again. Those buggers like to plug up
> again and again.

BTW I meant to tell you I used your advice on my friends Jeep (an 88 YJ
Sahara which I asked for advice on here this past summer) before I got
my own Jeep. Removed choke plate, yanked venturi cluster out, cleaned
idle tubes, also sprayed all the passages out with carb cleaner, and
replaced the gasket the cluster sits on.

Turns out the two screws that hold the venturi cluster down were very
loose, the gasket seemed unseated and goosing the gas (like you might do
starting out in first gear) caused a bog down or stall. I think air was
getting sucked in at the gasket (or a part of the gasket was getting
sucked in). Anyway great advice; my friend (he's also my Boss) was quite
happy that his Jeep runs a ---- load better. The difference between
stalling as you start out at a stop sign (dangerous to say the least
when leaves to dead in the middle of an intersection) and running smooth
after the fix is sweet.

--
Simon
"I may be wrong, but I'm not uncertain." -- Robert A. Heinlein