Question about 2002 Jeep Grand Cherokee

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I have a 2002 jeep grand Cherokee Laredo 8 cylinder engine and it just started making a tapping noise when it's running. The oil hasn't been changed in awhile. Could this make a difference or any other ideas?

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  • 293 Answers

Yes it most certainly can, thick oil can block hydrolic lifters and make tappets become loose and even fail. that is a good start point because the next is a worn cam shaft

Posted on Nov 25, 2013

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2002 jeep cherokee laredo

the only problem that vehicle has is with cooling fans is relay/module or electrical harness to module that burns up located behind and under right front headlamp assy must remove headlamp to access relay/module that is what powers up fan motor module assy.

Posted on Aug 10, 2008

garyq1970
  • 73 Answers

SOURCE: change water pump

If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

0900c1528004319d.jpgReverse rotation water pump—2.5L and 4.0L engines

  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
    • Negative battery cable
    • Electric cooling fan connector
    • Accessory drive belt
    • Engine cooling fan and pulley
    • Water pump pulley
    • Power steering pump
    • Lower radiator hose from the water pump
    • Heater hose
    • Water pump and discard the gasket
To install:
  1. Clean the mating surfaces of all gasket material.
  2. Install or connect the following:
    • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
    • Heater hose
    • Lower radiator hose
    • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
    • Power steering pump
    • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
    • Accessory drive belt
    • Electric cooling fan connector
    • Negative battery cable
  3. Fill and bleed the cooling system.
  4. Start the engine, check for leaks and repair if necessary.
3.7L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fan and clutch assembly from the pump
    • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
    • Lower hose
    • Water pump (8 bolts)
  4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). 0900c1528004319e.jpgWater pump tightening sequence—3.7L

Posted on Nov 15, 2008

motor1258
  • 6674 Answers

SOURCE: change a serpentine belt on 04 jeep grand cherokee laredo

Check this link & scroll down to your engine. Click on picture to expand.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528004328a

Posted on Feb 03, 2009

Mikey108
  • 475 Answers

SOURCE: 2002 Jeep Grand Cherokee Lardo misfiring

You say you changed the cam sensor. A1391 code is a crank sensor on the top of the trans. bell housing.

Posted on Feb 24, 2009

  • 114 Answers

SOURCE: 2002 wj jeep grand cherokee p1756

The governor pressure sensor is the most likley cause however an inspection of fluid or debris in trans pan would be a good idea to make sure there's nothing excessive in it. Attached is a list of possible causes however the senor would be the most common.

POSSIBLE CAUSES

  • Powertrain control module
  • 5 volt supply circuit open
  • Check transmission fluid level and condition
  • GOV press sensor signal circuit shorted to voltage
  • GOV press sensor signal circuit shorted to sensor ground
  • GOV press sensor signal circuit shorted to ground
  • GOV pressure sensor signal circuit open
  • Sensor ground circuit open
  • GOV press sensor signal circuit shorted to voltage inside transmission
  • 5 volt supply circuit open inside transmission
  • Intermittent governor pressure solenoid
  • Internal transmission problem
  • Oil burnt or oil pan has excessive debris
  • Other transmission DTC'S
  • GOV press sensor signal circuit shorted to sensor ground inside transmission
  • Valve body
  • GOV press sensor signal circuit shorted to ground inside transmission
  • GOV press sensor signal circuit open inside transmission
  • GOV press sensor ground circuit open inside transmission
  • Governor pressure sensor (high)

Posted on Mar 26, 2009

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1 Answer

2002 grand cherokee engine tapping loudly


My first guess would be a failing valve lifter. They can become weak with age and not able to hold oil pressure.
Especially in an engine with that many miles on the clock.
If the noise is constant you may be able to find out which cylinder by running a compression test. maybe.

Apr 08, 2013 | 1997 Jeep Grand Cherokee

1 Answer

Recently bought a jeep grand cherokee laredo 1994, it had been sitting for a year or so. When we got it started it is tapping a little, smoking alot, and gauge is showing zero oil pressure. I'm af


If it is a 4.0 strait six cylinder this is a common problem on them.Mine was located just below the oil filter and is pretty easy to fix.Plan it on your next oil change and it is even easier to change out.Oh just so you know your 4.0 liter engines do make a little bit of noise but are pretty much bulletproof if you just do regular maintence on them.Next time you start it put your ear down by the driver side hood hinge.You will find some tapping noise there it is part of the evap system.If it had no oil pressure you would know it rite away.

Jan 18, 2013 | 1994 Jeep Grand Cherokee

2 Answers

99 grand cherokee with 4.7l cylinder 8 misfire. changed plugs, coil pack a few times, still tapping away. exhaust doesnt smell rich. alittle bit of oil on the plug though...


Hi, when you say tapping--you mean the cylinder is making a tapping noise? If yes, that is a bad lifter/lash adjuster that is not allowing the valve to open fully. This will cause a misfire, but even if it didn't, it would soon wear out the can lobe and then require a major repair.
If it's not tapping, please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me.

Jan 22, 2011 | 2002 Jeep Grand Cherokee

1 Answer

I have a 2002 jeep grand cherokee high output 4.7 8 cylinder engine. i change the oil with synthetic oil every 3500. mechanic said that one of the cylinders has no compression. what could be the problem?


The lack of compression can be the result of a bad valve, a bad ring, or a bad head gasket. You'll need to do a leakdown test to deterine where exactly it is leaking.

Sep 01, 2010 | 2002 Jeep Grand Cherokee

1 Answer

Need firing order for 1998 Jeep Cherokee gand


For the 1998 Jeep Grand Cherokee Laredo:
I do not know if you have the 4.0L In-Line 6-Cylinder, the 5.2L V8, or the 5.9L V8; however I have included ALL below:

For the 4.0L In-Line 6-Cylinder:
Firing Order:
1-5-3-6-2-4
Cylinders:
(back)
...6
...5
...4
...3
...2
...1
(front)

Distributor:
....(back)
.....5....3..(+)-screw
1.............6
(+).4....2

For the 5.2L V8: AND 5.9L V8:
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
.......(back).......
|..8..|.........|..7..|
|..6..|.........|..5..|
|..4..|.........|..3..|
|..2..|.........|..1..|
.......(front)
Distributor:
.....(back)
.......3
..4.........6

8.............5
..1.........7
.......2
......(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

May 28, 2010 | 1998 Jeep Grand Cherokee

1 Answer

I CHANGED AIR FILTER ON MY 2005 JEEP LAREDO 65,200 MILES LAST WEEK AND BEGAN HEARING A CLICKING NOISE LIKE THE ENGINE WAS LOW ON OIL. I RE-CHECKED THE AIR FILTER INSTALLATION TO MAKE SURE CONNECTIONS WERE...


Is the noise like aluminum cans clinking together behind your front right tire? I have a 2005 Laredo also and have the same problem. My oil is a little low but not the reason that this noise should be happening.

Feb 21, 2010 | 2005 Jeep Grand Cherokee

2 Answers

What causes the oil pressure gauge to fluctuate on my 2004 Jeep Grand Cherokee Laredo?


If the oil pressure is good and there is no engine noises then the oil pressure sending unit is the problem.Just replace it and you should be good.Hope this helps.Good luck.

Jan 07, 2010 | 2004 Jeep Grand Cherokee

1 Answer

What oil is the best for a 2005 v6 jeep grand cherokee laredo


the cheapest you can buy and change it every 5/6000 miles with oil filter change every third oil change

Jan 03, 2010 | 2002 Jeep Grand Cherokee

2 Answers

I have been told the ticking noise my engine is


these is an old fix, and yes it is ok to do this, but it is better to add a can of Berrymans Chemtool run about 25 miles and drain oil.

Apr 02, 2009 | 2001 Jeep Grand Cherokee

1 Answer

4.7 liter jeep motor making tappinf sound and motor is missing


sounds like the lifters losed prime! here is a little trick that ive learned add a half off quirt off transmission fluid to the oil to prime the lifter

Nov 30, 2008 | 2002 Jeep Grand Cherokee

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