Question about 1989 Jeep Cherokee

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Changing my 1989 from 4 wheel drive to 2 wheel drive and Anti-Locking Braking System

Hi, I have a 1989 Jeep Cherokee. It is a 4 wheel drive, but I messed up my transfer case and my mechanic can't seem to find one and/or they are way pass my budget. Well, he told me since we can't find a transfer case, he would make it into a 2 wheel drive and just replace the rear drive axle shaft. I need my Jeep up and running asap so I said okay. Now, the problem is that we need to know if it has ABS. I was told to look on my dashboard and I would see (all the way in the lower left hand corner) an Anti-Lock light, but all the lights are dark. When I turn the key in my ignition and the lights do come on, the one all the way at the bottom (which according to my owner's manual) should be the Anti-Lock button, but unfortunately, it doesn't light up at all so I can't see what is says or if it says anything at all, however, according to my manual, it should have it. My mechanic said it was not and he looked at my brake pedal and said it would have Anti-Lock on it if it was. Is there any other way I can find out if it has ABS or Anti-Lock Braking System? Also, I went to the auto parts store and ordered the part #53008134, which is a drive axle shaft, but when I looked it up, that part should be used for the 1991 and older Jeep Cherokee Limited. They asked me what kind of Jeep I had and I told them a regular, 1989 Jeep Cherokee and they told me it was listed in their computer as a 1989 Jeep Cherokee Limited. How can I find out exactly what kind of Jeep I have? The manual just says 1989 Jeep Cherokee.

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Ok toni, the drive axle shaft should fit both the Limited and your 'regular' Cherokee. They are the same exact vehicle except for trim items, factory wheels, mostly cosmetic stuff, and the limited comes w/ a lot of options. Engine and drive train components would be the same, except that the Limited didn't offer a standard 4 cyl. and I don't think it came w/ a standard trans, only automatic. Does your Jeep have the 4.0 in-line 6 cyl and auto trans? If it does they're identicle.
As far as the abs goes, I think it's time to get a new mechanic. ABS equipped vehicles have sensors on all 4 wheels, this should be something a mechanic would know, and could check rather easily. The most obvious is to pull a wheel and look for a gear/sprocket type mechanism (called a tone wheel) behind the wheel hub. Actually, u can just check under the hood, the abs system has a lot more to its components than regular brakes. ABS system has a pressure modulator, along w/ the 4 wheel sensors. Let me know if u have any questions. good luck! countrycurt0

Posted on Oct 05, 2008

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An ABS system will have wheel sensors installed. Remove one of your wheels and look for a wiring harness that runs to your steering knuckle(the part that you brake rotor and strut is attached to. Also, either you front half shaft or brake rotor will have what looks like gear teeth on them. These are the magnets the sensor reads. If your Jeep has either of these it has an ABS system. Secondly the chassis on the Cherokees should be the same irregardless of trim level (limited vs regular). These trim levels affect the interior trim and power extras only not the mechanical parts.

Posted on Oct 05, 2008

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1 Answer

What is anti-lock braking system on cars?


Anti-Lock Brake systems are all essentially the same they will prevent the driver form applying 100% Brake pressure and locking up the wheels while driving. The ratchet the pressure more slowly to prevent the car from skidding. Our first reaction in an emergency is to slam on the brakes and that is 90% of the time not the right action. So Anti-Lock brakes are designed to prevent this unwanted skid.

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My 1989 jeep cherokee will only drive in 4x


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When braking and almost to a complete stop for some reason the anti lock kicks in. i have to let off and push the pedal again.


Anti-Lock Braking System (ABS)
Purpose Anti-lock brake systems (ABS) - generally also referred to as anti-lock
systems (ALS) - are designed to prevent the vehicle wheels from locking
as a result of the service brake being applied with too much force, especially
on slippery road surfaces.
The idea is to maintain cornering forces on braked wheels to ensure that
the vehicle or vehicle combination retains its driving stability and manoeuvrability
as far as physically possible. The available power transmission
or grip between tyres and carriageway should also be utilised as
far as possible to minimise the braking distance and maximise vehicle
deceleration.
Why ABS? Although today commercial vehicle brakes are designed to a very high
technical standard, braking on slippery roads often results in potentially
dangerous situations. During full or even partial braking on a slippery
road it may no longer be possible to fully transfer the braking force onto
the road due to the low coefficient of friction (friction coefficient (k)) between
the tyres and the carriageway. The braking force is excessive and
the wheels lock up. Locked wheels no longer provide any grip on the
road and are almost incapable of transferring any cornering forces
(steering and tracking forces). This often has dangerous consequences:
- The vehicle becomes unsteerable
- The vehicle breaks away in spite of countersteering, and starts to
swerve.
- The braking distance is significantly increased
- Tractor-trailer combinations or semitrailer trains may break away or
jackknife.
Load sensing valve influence On dry roads today's load sensing valves (ALB) alone are often capable
of preventing the wheels from locking if the vehicle is unladen; they also
help the driver to effectively grade the braking process on wet road surfaces,
but they are unable to prevent locking as such (no slip monitoring).
In addition, they are unable to counteract any overreactions on the
part of the driver, or any variances in frictional or adhesion coefficients
which may apply to different sides of the vehicle, or indeed to its different
axles (?-split road surfaces).
Benefits of ABS: Only the Anti-Lock Brake System (ABS)
- guarantees stable braking characteristics on all road surfaces.
- maintains steerability and generally reduces the braking distance
- prevents vehicle combinations from jackknifing
- reduces tyre wear.
Limits of ABS Although ABS is an effective safety device, it can not suspend the limits
defined by driving physics. Even a vehicle fitted with ABS will become
uncontrollable if driven too fast around a corner.
So ABS is not a licence for a maladjusted style of driving or failure to observe
the correct safety distance.
4
ABS Training Anti-Slip Regulation (ASR)
Anti-Slip Regulation (ASR)
Why ASR? Increasing the engine output (accelerating) on a slippery road surface
can easily lead to the maximum adhesion on one or all powered wheels
being exceeded causing them to spin, especially if the vehicle is unladen
or partially laden.
Spinning wheels when driving off or accelerating represent a safety risk
just like locked wheel do when braking.
Reasons - Wheels that spin transfer just as little cornering force as locked
wheels.
- They also no longer transfer any tractive power onto the road.
Consequences - Vehicles that do not move or get stuck.
- Vehicles that can no longer be steered, jackknife on uphill uphill
gradients, or swerve in corners.
Benefits of ASR ASR prevents the powered wheel from spinning and provides the following
benefits:
- Tractive power and cornering forces are maintained.
- Stable driving behaviour is ensured when moving off, accelerating
and negotiating corners on slippery roads.
- The indicator lamp (if installed) is used to warn the driver of slippery
road conditions.
- Tyre wear is reduced to a minimum, and the motor vehicle's drive
train protected
- The risk of accidents is further reduced.
ASR and ABS: ASR represents a worthwhile addition to an ABS-controlled braking system.
All that is required to turn ABS control into full ABS/ASR control is
an ECU with the additional ASR function and a few additional components
for controlling the differential brake and the engine. This why ASR
is only available in combination with ABS.
Even a differential lock for off-road use and ASR do not exclude but complement
each other.
Limits of ASR The traction capacity of an all-wheel driven commercial vehicle can not
be achieved by a motor vehicle with only one driving axle - not even with
optimal ASR.

when-braking-almost-complete-stop-vi1ay411tmzjz03ru4fkmxgj-5-0.jpg

when-braking-almost-complete-stop-vi1ay411tmzjz03ru4fkmxgj-5-2.jpg

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1 Answer

Does it have anti lock breaks the ven number is 1G3HY54C0KW348877?


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A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.

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1 Answer

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Abs esp


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My abs light is on in my jeep.... What could that be?


Hi:
You have a fault in your anti lock braking system. The most common cause is a wheel speed sensor. You can get free help from a local auto parts store, such as auto zone. they will download your codes for free ,and tell you what caused it. That way you can have a better idea as to what is wrong before you spend some money! I hope you get a cheap fix..

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1 Answer

Where is the abs brake controller?


An anti-lock braking system, or ABS (from the German, Antiblockiersystem) is a safety system which prevents the wheels on a motor vehicle from locking while braking.
A rotating road wheel allows the driver to maintain steering control under heavy braking by preventing a skid and allowing the wheel to continue interacting tractively with the road surface as directed by driver steering inputs. While ABS offers improved vehicle control in some circumstances, it can also present disadvantages including increased braking distance on slippery surfaces such as ice, packed snow, gravel, steel plates and bridges, or anything other than dry pavement. ABS has also been demonstrated to create a false sense of security in drivers, who may drive more aggressively as a result.[citation needed]
Since initial widespread use in production cars, anti-lock braking systems have evolved considerably. Recent versions not only prevent wheel lock under braking, but also electronically control the front-to-rear brake bias. This function, depending on its specific capabilities and implementation, is known as electronic brakeforce distribution (EBD), traction control system (TCS or ASR), emergency brake assist (BA, EBA or HBA), or electronic stability control (ESP, ESC or DSC).

You can read the complete article at : http://en.wikipedia.org/wiki/Anti-lock_braking_system

Thank You!

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