20 Most Recent 1999 Jeep Cherokee 4WD Questions & Answers

Things You'll Need
  • Waste oil collection pan
  • Needle nose pliers
  • Phillips head screwdriver
  • Wrench set
  • Socket set
  • Antifreeze
  • Water
  1. Draining the Cooling System
    • 1 Locate the petcock valve on the lower right corner of the radiator and place a waste oil collection pan underneath it.
    • 2 Open the petcock valve by turning it counterclockwise, using needle nose pliers.
    • 3 Wait until all the coolant has drained out then close the petcock valve by turning it clockwise.
    Removing the Radiator
    • 1 Loosen the hose clamp that connects the upper radiator hose to the radiator using a Phillips head screwdriver. Then pull the upper radiator hose off the radiator.
    • 2 Loosen the hose clamp that connects the lower radiator hose to the radiator using a Phillips head screwdriver. Then pull the hose off the radiator.
    • 3 Unscrew the transmission cooler lines from the radiator (automatic transmission only) using a wrench.
    • 4 Unscrew the bolts that secure the radiator to the core support, using a socket.
    • 5 Lift the radiator straight up to remove it from the vehicle.
    Installing the Radiator
    • 1 Lower the radiator into position behind the core support. Be careful: the cooling fins are thin and can be easily damaged.
    • 2 Screw the bolts that secure the radiator into the core support. Tighten with a socket.
    • 3 Thread the transmission cooler line fittings into the radiator. Tighten with a wrench.
    • 4 Slide the lower radiator hose onto the fitting on the bottom of the radiator. Slide the hose clamp over the fitting and tighten with a Phillips head screwdriver.
    • 5 Slide the upper radiator hose onto the fitting on the top of the radiator. Slide the hose clamp over the fitting and tighten with a Phillips head screwdriver.
    • 6 Fill the engine with a 50/50 mix of antifreeze and water.
    • 7 Run the engine and visually inspect for leaks.

1999 Jeep... | Answered on Mar 18, 2019

Removing your oil filter housing is a simple task with the correct tools. You will need to evacuate the oil in the drain pan before removing the filter housing. You need a torx bit to remove the housing. The oil filter housing is located near the distributor cap. You can unbolt the housing by unscrewing the torx bolt on the outside of the neck. The filter and the housing will come out.

Read more: Jeep Oil Filter Housing Removal ' eHow.com http://www.ehow.com/way_5649355_jeep-oil-filter-housing-removal.html#ixzz1CS95qEdH

1999 Jeep... | Answered on Dec 27, 2017

Had this problem too, and you need to check that your TPS sensor plug.harness is tight, the best way to do that is to actually unplug it, blow it out and then plug it back in. But the same problem happened again and it turned out to be the CPS plug had come loose, again check it and make sure it's seated well, and everyone will tell you to replace them, but if take a wooden dole, or stick and can tap yours gently down towards the transmission I've found that it works well after that.


1999 Jeep... | Answered on Oct 05, 2017

My guess would be the fan is flinging it around, so radiator, hose or water pump.
Make sure your radiator is full and start your engine and look for leaks... If you don't see any wait for it to warm up and check again..

1999 Jeep... | Answered on Mar 13, 2016

If your fuel system is ok(which it sounds like you've checked) go to the distributer cap and rotor,these often get hairline cracks which are not apparent by looking at them, but are cheap to replace. Also while in there make sure everything else looks clean and situated correctly. Then change your spark plugs and if they are not newer,better ones, your spark plug wires too, this often has a profound effect on starting and running smooth all by itself. Use good quality parts (No Champion plugs for example,have run into to many that fail new or shortly afterwards) and change your air filter while your under the hood. You can also use seafoam (slowly added to hose for intake while manually raising the rpms,and the other half of the bottle added to fuel tank) to clean the intake system.If you do this,do it BEFORE you change the plugs as it often fouls them,and is perfect to do before you change them out, Drive a few miles after using the seafoam as well,then change out the plugs and wires etc..

1999 Jeep... | Answered on Mar 13, 2016

Check to make sure it is connected at the transfer case. The shifter bushings become worn and break and allows the linkage to fall off the lever arm.

1999 Jeep... | Answered on Feb 23, 2015

Your owners manual will show you exactly where it is...However it is easy to disconnect the horn...You desperately need a horn for safety reasons to avoid a crash...Especially if your state has a safety inspection requirement...Your fuse panel should also have the fuses numbered and a sticker inside the fuse box cover stating which fuse goes to horn....Also you can wear safety glasses and disconnect the battery to avoid air bag explosion..Remove steering wheel center cover where the horn is pressed...,You will see a small wire attached to the cover and to the prong inside steering wheel...It could be loose or disconnected.....If not just disconnect the wire and black tape the terminal end ..Then the horn is disconnected...

1999 Jeep... | Answered on Feb 20, 2015

The first thing to check is the oxygen sensors. They are supposed to be changed every 65 thousand miles or so.

1999 Jeep... | Answered on Dec 27, 2014

remove the drum and inspect you job. small shoe on front big shoe on back.brake lube on the backing plate.lose the adjuster and inspect,lube the adjuster, give more free play on your parking brake cable 3 click is the normal before lock the wheel. Inspect the master cylinder for overfeel, remove any fluid over the max level. inspect the fluid for contamination(burn smell or oily)flush the system. lift the Jeep and pump on the brakes,if the wheel is locking open the bleeder screw.if brake fluid is under pressure,replace the hoses.
good luck

1999 Jeep... | Answered on Oct 25, 2014

On 99 4.0l it is located on the oil pump drive

1999 Jeep... | Answered on Sep 09, 2014

hot or cold engine? (EFI controls it all , but)
a cold engine is , MAP and ECT , and RPM , iAT set, by PCM tables.
Inputs >>>. ECU tables >>>> math >>> injection rates.

hot is the same but the engine EFI enters Closed loop fuel controls
the scan tool shows "closed loop status "true"
so the 02 sensors pulls the mixture to STOICH, 14.7:1 AFR.
AFR means air fuel ratio, or mix, in bar stool lingo, (ok)

what is the real question or issue, or just shopping for facts.
both are welcome for sure.
if really curious read the books by :
Greg Banish books , both are GEMS ! (i have them all, and his win big time.)


1999 Jeep... | Answered on Aug 31, 2014

It could be a number of things, if it's injected then it could be fuel rail pressure sensor, or it could be air flow sensor or it could be O2 sensor, have a mechanic diagnose it

1999 Jeep... | Answered on Aug 30, 2014

With the engine off, depress the brake pedal about 6 times, all the way up and down. While holding the hard pedal down, start the engine, and if the booster is working properly, the pedal will fade down a little bit.

1999 Jeep... | Answered on Aug 11, 2014

The instrument cluster or ignition switch module,
lost communication with the electrical bus or wiring
system & can not be seen by other modules!

Need wiring diagrams & factory trouble charts to diagnose
the fault

May be something on the internet about it ,on your vehicle

Google the issue

1999 Jeep... | Answered on Jul 21, 2014

If it has one, most likely. it should be very obvious if it is not, such as aftermarket brackets and fittings. If there is not an external trans cooler installed, they run the tranny fluid through the radiator (the trans fluid is hotter than the engine coolant).

1999 Jeep... | Answered on Jul 07, 2014

if it has a factory tow package usually it already has a trans cooler installed it will be located in front of the radiator/ a/c condenser , if not there not that difficult to install

1999 Jeep... | Answered on Jul 07, 2014

It sounds like the heater coil needs flushing out or replacing or the heater valve. Look on the engine firewall and make sure the heater valve is opening. If not open it manually and check the heat level. If that produced heat check the condition of the heater vale cable (or vaccum hose).

1999 Jeep... | Answered on May 13, 2014

Push hood back down hard,then pull on
hood release hard again.If not work,trace wire
inside as far as you can and get grips or pliers
and pul from as far up the line as you can.If it
opens as it should,you can easily unattache wire
from pull handle put a knot in wire,this will shorten it
so easier to undo next time.Infact you might try that first.
If none work which I doubt,get push to start and drive
to garage.LUCK

1999 Jeep... | Answered on May 10, 2014

double posted. backup 1 post

1999 Jeep... | Answered on Apr 09, 2014

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