Top 10 2002 Jeep Liberty Questions & Answers

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firing order diagram 02 jeep liberty 3.7L

firing order diagram 02 jeep liberty 3.7L

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2002 Jeep Liberty Limited Edition 4WD 3.7 liter SOHC V-6 VIN "K"

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Also, here can find the Jeep KJ Service Manual

Hope helps (remember rated this help) Good luck.

Posted on Jan 22, 2010

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2002 jeep liberty interior fuse diagram

No manual. Need to know what the numbers on the interior fuse box correspond to on a 2002 jeep liberty.

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1-20amp-pwr outlet frt. 2-10amp-rear fog lights(export only)
3-15 amp-horn 4-10amp-hedlt low beam rt
5-10amp-hedlt low beam lft 6-20amp-bodycontrolmodule/pwr dr locks 7-spare 8-spare 9-10amp- rt pk lt /rt tail lt/trailer tow lt/cluster
10-spare 11-15 amp-flasher 12-15 amp-stop lts
13-10amp-bodycontrolmodule/cmtc/cluster 14-spare
15-10amp-pdc fuel pmp & auto shutdownrelays/skis
16-20amp-pwr outlet rear 17-15amp-rear wiper 18-20amp-radio choke relay 19-20amp-frt fog lts/trailer tow stop and turn lts
20-20amp-sunroof 21-spare 22-10amp-wiperswitch/frt and rear washer 23-10amp-lft park lt/lft tail lt 24-10amp-pdc blower motor relay 25-10amp-heatseatswitch/hvac controlhead/trailor tow battery charge 26-10amp-hedlt highbeam rt 27-10amp-hedlt highbeam lft
28-spare 29-15amp-heated seat module 30-10amp-heated mirrors/rearwindowdefrosterindicator 31-20amp-cigarlighter
32-10amp-radio/frtdoorlockswitches/bodycontrolmodule
33-10amp-skis/diagnostic connector 34-15amp-cluster/courtesy lts/radio/bodycontrolmodule/maplights/cmtc/underhood lt/vanity lts
35-spare 36-10amp-ignition run/start-orc/lft and rt siacm
37-10amp-ignition run only-orc 38-10amp-abs module/brake shift interlock solenoid 39-10amp-rear window defroster relay/flasher/backup lts

Posted on Jul 10, 2009

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2002 Jeep Liberty oil pressure light comes on in cold

I have a 2002 Jeep Liberty and the oil pressure light comes on in the mornings when it's cold. It doesn't happen when I'm moving, only when I'm stopped for more than about 5 seconds (so not in stop & go traffic, more like at stop lights).

This just started happening about two oil changes ago. I took it to the shop the first time and they spent 2 hours trying to diagnose and/or repeat the problem and couldn't. They charged me for the diagnostics ($110) and their solution was engine oil additive.

I would like to know if:
a) anyone else has had this issue
and
b) what the root cause might be.

The additive is working, but my fear is that it's a band-aid and something worse will happen down the road if I don't take care of the root of the issue soon.

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Chrysler mounted the oil sensing unit on these motors directly above the oil filter. It is very easy to accidently hook the sensing unit with the oil filter wrench and crack or break it. For anyone whose oil light problem developed right after an oil change, this may be the problem. To change the unit, pry up the plastic retaining clip with a screw driver and unplug the wire harness. If the plastic part of the sensor is broken, (or if you break it to facilitate easy removal), you can remove the sensor with a 27mm socket. Once you have removed it, use a piece of CLEAN pipe cleaner to insure the hole isn't plugged with sludge which could also cause the oil light to come on. Screw in the new unit finger tight, then snug up with a WRENCH. You cannot use the socket to tighten it as it would damage the plastic part of the new sensor. Plug the wire harness back on, then start the engine to make sure it doesn't leak oil around the new unit.

Posted on Jan 13, 2009

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2002 jeep liberty speed sensor

Check engine light is on, no speed ohmmeter or odometer working. Took it to auto zone for diagnostic test....they are telling me speed sensor. Where is this located? By looking at the part it looks easy to replace. Help please.

thank you.

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Jeep Liberty 2002 woahs !
by porth21 - 2/1/09 7:35 AM In reply to: Jeep Liberty 2002 speedometer not working by Dannywon
I have a 2002 Jeep Liberty Limited with the same problem. The main problem I have found to be the routing of the speed sensor wires located on the rear difrential. They are 2 blue wires on my jeep and probably the same on yours. The problem is that they rub on the E-brake cable and once the wire is exposed they short and the speedometer and any other options running off they speed sensor quit working and that includes the tranny shift points and can cause the torque converter to not unlock and cause stalls. I am having the same problem for the third time and chrysler and jeep are both aware of the problem and unwilling to repair the problem or post a recall.

Posted on Apr 01, 2010

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jb power fuse drains battery

jb power fuse drains battery

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The JB fuse under the hood is the power supply for the fuse box inside of the vehicle, if the battery drain goes away when JB fuse is removed is only because you have isolated the interior from the rest of the vehicle. These vehicles have issues with the body harness connector on the drivers side floor. To access the connector remove the rear seat and pull back the carpet, the connector is located directly below the drivers side rear seat bottom. Unscrew the 10mm bolt that holds the connector halves together and inspect for corrosion. If corrosion is present, repair as needed and your battery drain should go away.

Posted on Jan 23, 2011

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2002 Jeep Liberty 3.7L Engine Swap to newer 2004 engine

Okay, this is driving me nuts! I have a 2002 Jeep liberty with a blown 3.7L engine. I am going to replace it, but am having trouble finding a 02/03 engine around here locally. I find plenty of 04/05/06 3.7 engines and was wondering if I would be able to drop one of those in? I understand they have different crank reluctor wheels and possibly cam reluctor wheels. I was thinking of putting a 04 engine in and then also swap my PCM for a newer 2004 PCM with the later engine tune that should be calibrated for the 04 engine. Does anyone have any knowledge if this should work? I would expect the wiring harnesses to be the same between the 02 and 04 engines and would think everything would just bolt right up and fire up. Any input would be greatly appreciated, thanks!

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Has anyone made this work yet? I have the same problem 2002 jeep 3.7 and just installed a 04 motor. Timing is off. Some one had a good idea of mounting the crank gear to the out side of the harmonic ballancer and mounting the sensor with a bracket. What about the cam gear on the left side. Does the timing cahain have to come off to remove it? Or has any one swaped the wiring harnest, and computer.
Please email me back. pcardoso@cogeco.ca Thanks for your help.

Posted on Apr 21, 2012

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how to set the timing

how to set the timing marks on the cams on a02 jeep liberty 3.7 engine

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Timing Chain

  • REMOVAL & INSTALLATION ;3.7L Engine
    1. Disconnect negative cable from battery.
    2. Drain cooling system.
    3. Remove right and left cylinder head covers.
    4. Remove radiator fan shroud.
    5. Rotate engine until timing mark on crankshaft damper aligns with TDC mark on timing chain cover and the camshaft sprocket -V6- marks are at the 12 o-clock position (#1 TDC exhaust stroke).
    6. Remove power steering pump.
    7. Remove access plug from left and right cylinder heads for access to chain guide fasteners .
    8. Remove the oil fill housing to gain access to the right side tensioner arm fastener.
    9. Remove crankshaft damper and timing chain cover.
    10. Collapse and pin primary chain tensioner.
      CAUTION Plate behind left secondary chain tensioner could fall into oil pan. Therefore, cover pan opening.
    11. Remove secondary chain tensioners.
    12. Remove camshaft position sensor .
      CAUTION Care should be taken not to damage camshaft target wheel. Do not hold target wheel while loosening or tightening camshaft sprocket. Do not place the target wheel near a magnetic source of any kind. A damaged or magnetized target wheel could cause a vehicle no start condition.

      CAUTION Do not forcefully rotate the camshafts or crankshaft independently of each other. Damaging intake valve to piston contact will occur. Ensure negative battery cable is disconnected to guard against accidental starter engagement.
    13. Remove left and right camshaft sprocket bolts.
    While holding the left camshaft steel tube with Special Tool 8428 Camshaft Wrench, remove the left camshaft sprocket. Slowly rotate the camshaft approximately 5 degrees clockwise to a neutral position.
  • While holding the right camshaft steel tube with Special Tool 8428 Camshaft Wrench, remove the right camshaft sprocket.
  • Remove idler sprocket assembly bolt.
  • Slide the idler sprocket assembly and crank sprocket forward simultaneously to remove the primary and secondary chains.
  • Remove both pivoting tensioner arms and chain guides.
  • Remove primary chain tensioner.

  • To install:
    1. Using a vise, lightly compress the secondary chain tensioner piston until the piston step is flush with the tensioner body. Using a pin or suitable tool, release ratchet pawl by pulling pawl back against spring force through access hole on side of tensioner.
    2. While continuing to hold pawl back, Push ratchet device to approximately 2 mm from the tensioner body. Install Special Tool 8514 lock pin into hole on front of tensioner. Slowly open vise to transfer piston spring force to lock pin.
    3. Position primary chain tensioner over oil pump and insert bolts into lower two holes on tensioner bracket. Tighten bolts to 250 inch lbs. (28 Nm).
    4. Install right side chain tensioner arm. Install Torx®bolt. Tighten Torx®bolt to 250 inch lbs. (28 Nm).
      CAUTION The silver bolts retain the guides to the cylinder heads and the black bolts retain the guides to the engine block.
    5. Install the left side chain guide. Tighten the bolts to 250 inch lbs. (28 Nm).
    6. Install left side chain tensioner arm, and Torx®bolt. Tighten Torx®bolt to 250 inch lbs. (28 Nm).
    7. Install the right side chain guide. Tighten the bolts to 250 inch lbs. (28 Nm).
    8. Install both secondary chains onto the idler sprocket. Align two plated links on the secondary chains to be visible through the two lower openings on the idler sprocket (4 o-clock and 8 o-clock). Once the secondary timing chains are installed, position special tool 8429 to hold chains in place for installation.
    9. Align primary chain double plated links with the timing mark at 12 o-clock on the idler sprocket.
    10. Align the primary chain single plated link with the timing mark at 6 o-clock on the crankshaft sprocket.
    11. Lubricate idler shaft and bushings with clean engine oil.
      NOTE The idler sprocket must be timed to the counterbalance shaft drive gear before the idler sprocket is fully seated.
    12. Install all chains, crankshaft sprocket, and idler sprocket as an assembly . After guiding both secondary chains through the block and cylinder head openings, affix chains with a elastic strap or equivalent. This will maintain tension on chains to aid in installation. Align the timing mark on the idler sprocket gear to the timing mark on the counterbalance shaft drive gear, then seat idler sprocket fully . Before installing idler sprocket bolt, lubricate washer with oil, and tighten idler sprocket assembly retaining bolt to 25 ft. lbs. (34 Nm).
      NOTE It will be necessary to slightly rotate camshafts for sprocket installation.
    13. Align left camshaft sprocket -L- dot to plated link on chain.
    14. Align right camshaft sprocket -R- dot to plated link on chain.
      CAUTION Remove excess oil from the camshaft sprocket bolt. Failure to do so can result in over torque of bolt resulting in bolt failure.
    15. Remove Special Tool 8429, then attach both sprockets to camshafts. Remove excess oil from bolts, then Install sprocket bolts, but do not tighten at this time.
    16. Verify that all plated links are aligned with the marks on all sprockets and the -V6- marks on camshaft sprockets are at the 12 o-clock position.
      CAUTION Ensure the plate between the left secondary chain tensioner and block is correctly installed.
    17. Install both secondary chain tensioners. Tighten bolts to 250 inch lbs. (28 Nm).
      NOTE Left and right secondary chain tensioners are not common.
    18. Remove all locking pins from tensioners.
      CAUTION After pulling locking pins out of each tensioner, DO NOT manually extend the tensioner(s) ratchet. Doing so will over tension the chains, resulting in noise and/or high timing chain loads.
    19. Using Special Tool 6958, Spanner with Adaptor Pins 8346, tighten left and right . camshaft sprocket bolts to 90 ft. lbs. (122 Nm).
    20. Rotate engine two full revolutions. Verify timing marks are at the follow locations: ² primary chain idler sprocket dot is at 12 o-clock ² primary chain crankshaft sprocket dot is at 6 o-clock ² secondary chain camshaft sprockets -V6- marks are at 12 o-clock ² counter balancer shaft drive gear dot is aligned to the idler sprocket gear dot.
    21. Lubricate all three chains with engine oil.

Posted on Jan 04, 2011

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I have a 2002 Jeep Liberty Limited, 3.7 L motor.

I have a 2002 Jeep Liberty Limited, 3.7 L motor. The heater will not blow hot air. The A/C and fan work well. When I turn the temperature dial to hot, there is only cold air coming out. Can you assist me?

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Jeeps are notorious for having broken temperature control (Blend Air) doors. A malfunctioning Blend Air Door actuator probably caused it to break. The dash will have to be removed to replacethe door and the door actuator.

Posted on Jan 16, 2011

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3.7 ENGINE TIMING MARKS

I NEED TO REPLACE A 3.7 TIMING CHAIN

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Hope its helpfull
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Posted on Jan 11, 2016

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need timing mark info for a 2002 jeep liberty 3.7l

need timing mark info for a 2002 jeep liberty 3.7l engine

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here you go







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Posted on Apr 20, 2010

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