new Jeep owner with questions

Hi All,

I bought a used 98 Wrangler and have a few questions

1) what is the recommended RPM at idle

2) I have a knock coming from what sounds like under the body by the
passenger frame rail by the exhaust pipe...I held the pipe while it was
idling (and still cool!) anyone have any ideas why i am getting this
knock or suggestions on what else to check?

3) Is there a primer on how and when to use the 4WD settings...my jeep
did not come with a manual (anyone know where to get one online for
free?)

Thanks in advance!

Worn out cats will knock internally sometimes. Don't use your 4wd on
anything but offroad, muddy, or snowy conditions. No pavement.
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco

"There is a very fine line between 'hobby' and 'mental illness'."

Pronunciation: 'jEp Function: noun Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________

wrote:
> Hi All,
>
> I bought a used 98 Wrangler and have a few questions
>
> 1) what is the recommended RPM at idle
>
> 2) I have a knock coming from what sounds like under the body by the
> passenger frame rail by the exhaust pipe...I held the pipe while it was
> idling (and still cool!) anyone have any ideas why i am getting this
> knock or suggestions on what else to check?
>
> 3) Is there a primer on how and when to use the 4WD settings...my jeep
> did not come with a manual (anyone know where to get one online for
> free?)
>
> Thanks in advance!
>

In article .com>,
> wrote:
#Hi All,
#
#I bought a used 98 Wrangler and have a few questions
#
#1) what is the recommended RPM at idle
Stick or Automatic? 2.5 or 4.0?

#3) Is there a primer on how and when to use the 4WD settings...my jeep
#did not come with a manual (anyone know where to get one online for
#free?)
If it is paved, don't engage 4wd--even on flooded pavement. I have
a streched tcase chain, and a bunch of other old wornout tcase parts
sitting in my junk pile to prove it.

/herb

I have a manual trans 2.5 engine

> wrote in message
oups.com...
> Hi All,
>
> I bought a used 98 Wrangler and have a few questions
>
> 1) what is the recommended RPM at idle

About 750 or so on the 6-cyl
>
> 2) I have a knock coming from what sounds like under the body by the
> passenger frame rail by the exhaust pipe...I held the pipe while it was
> idling (and still cool!) anyone have any ideas why i am getting this
> knock or suggestions on what else to check?
>
Rear track bar bushing may be loose or worn. Front, middle, or back?

> 3) Is there a primer on how and when to use the 4WD settings...my jeep
> did not come with a manual (anyone know where to get one online for
> free?)
>
Only use 4wd on loose, slippery surfaces. Both 4wd settings lock the front
and rear axles together so the tires must have some slippage or else the
drivetrain will bind and parts eventually break.

4-Hi is the same as 2wd except you lock in the front axle. You can shift
from 2wd to 4hi when moving or not, even at highway speeds. Keep in mind if
conditions warrant using 4wd you should not be going at highway speeds
anyway.

4-lo is Low Range, which will increase torque to the wheels, but decrease
your ground speed. Good for tight trails where increase traction and control
are needed. You can shift into 4-lo by firmly shifting straight through N on
the trasnfer case lever. You should be able to shift into and out 4lo when
stopped, and you can shift when moving slowly, like 1-2 mph.

Don't know about for free but you can probably find a manual on eBay.
> Thanks in advance!
>

Check the shock mounts.

--
mark
www.hydrotoys.com
> wrote in message
oups.com...
> Hi All,
>
> I bought a used 98 Wrangler and have a few questions
>
> 1) what is the recommended RPM at idle
>
> 2) I have a knock coming from what sounds like under the body by the
> passenger frame rail by the exhaust pipe...I held the pipe while it was
> idling (and still cool!) anyone have any ideas why i am getting this
> knock or suggestions on what else to check?
>
> 3) Is there a primer on how and when to use the 4WD settings...my jeep
> did not come with a manual (anyone know where to get one online for
> free?)
>
> Thanks in advance!
>