Question about 1994 Jeep Grand Cherokee

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What is the black plastic box on top of the alternator of a 94 grand cherokee V8. it mounted on top of the alt. and a wire goes into the wiring harness for . mine is warped and looks like it almost melted. the alt is 1 year old refurbished and the FIRESTONE store in Marietta GA tells me its the voltage regulator. well the VR is built into the alternator so i called chrysler its call a housing power distribution box. So i cannot find a free wiring diagram on the internet. I can not find this box any where. So the box has electrical connections into the cars wiring harness. what is it? HELP>

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Posted on May 01, 2009

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I have a 94 jeep grand cherokee, cleaned engine, sprayed off with hose. It started up but quickly sputtered out. Now it just turns over and will not start. It has a holley carb and is a v8. I am sure I...


Remove the distributor cap and dry it's underside thoroughly before re-installing it. Make sure you know which plug wire goes where before removing them.

Oct 05, 2011 | 1994 Jeep Grand Cherokee

1 Answer

How do i replace an alt on an 97 Grand Voyager?


When you says ALT, I'm assuming that you are talking about ALTERNATOR...

REMOVAL & INSTALLATION
2.4L Engine
  1. Disconnect the negative battery cable.
  2. Remove the accessory drive belt.
  3. Unplug the push-in field wire connector from behind the alternator.
  4. Remove the B+ nut and wire from behind the alternator.
  5. Remove the nut securing the top of the alternator to the adjuster bolt (a.k.a T-bolt).
  6. Remove the alternator pivot nut and bolt, located below the alternator.
  7. Remove the alternator from the vehicle.
To install:
  1. Install the alternator into position on the vehicle's engine.
  2. Install, but do not tighten, the alternator pivot nut and bolt.
  3. Install the nut securing the top of the alternator to the adjuster bolt.
  4. Connect the B+ wire and tighten the retaining nut to 75 inch lbs. (9 Nm).
  5. Plug in the push-in field wire connector onto the back of the alternator.
  6. Install the accessory drive belt. Be sure the drive belt is correctly routed on the engine and correctly seated on all of the pulleys, especially the alternator.
  7. Adjust the drive belt and tighten the adjuster/locking bolt to 40 ft. lbs. (54 Nm).
  8. Tighten the pivot bolt to 40 ft. lbs. (54 Nm).
  9. Reconnect the negative battery cable.
  10. Verify the charging rate of the alternator.

3.0L Engine
  1. Disconnect the negative battery cable.
  2. Remove the windshield wiper/motor module assembly.
  1. Remove the accessory drive belt from the alternator.
  2. Remove the bolt securing the top of the alternator to the mounting bracket.
  3. Remove the bolt securing the bottom of the alternator to the lower pivot bracket.
  1. While holding the alternator, unplug the push-in field wire connector from behind the alternator.
  2. While holding the alternator, remove the B+ nut and wire from behind the alternator.
  3. Remove the alternator from the vehicle.
To install:
  1. Hold the alternator in position near the mounting bracket, then connect the B+ wire and tighten the retaining nut to 75 inch lbs. (9 Nm).
  2. Plug in the push-in field wire connector onto the back of the alternator.
  3. Place the alternator into position on the mounting bracket, then install the bolt securing the bottom of the alternator to the lower pivot bracket.
  4. Install the bolt securing the top of the alternator to the mounting bracket. Tighten the upper and lower alternator bolts to 40 ft. lbs. (54 Nm).
  5. Install the accessory drive belt. Be sure the drive belt is correctly routed on the engine and correctly seated on all of the pulleys.
  6. Install the windshield wiper/motor module assembly.
  7. Reconnect the negative battery cable.
  8. Verify the charging rate of the alternator.

3.3L and 3.8L Engines
  1. Disconnect the negative battery cable.
  2. Remove the windshield wiper/motor module assembly.
  3. Remove the accessory drive belt.
  4. Remove the bolt securing the top of the alternator mounting bracket to the engine air intake plenum.
  1. Remove the bolts securing the outside of the alternator mounting bracket to the alternator mounting plate.
  2. Remove the bolt securing the top of the alternator to the mounting bracket.
  3. Remove the alternator mounting bracket from the vehicle.
  4. Rotate the alternator toward the dash panel.
  5. Unplug the push-in field wire connector from behind the alternator.
  6. Remove the B+ nut and wire from behind the alternator.
  1. Remove the bolt securing the bottom of the alternator to the lower pivot bracket.
  2. Remove the alternator from the vehicle.
To install:
  1. Install the alternator into position on the vehicle's engine.
  2. Install the bolt securing the bottom of the alternator to the lower pivot bracket.
  3. Connect the B+ wire and tighten the retaining nut to 75 inch lbs. (9 Nm).
  4. Plug in the push-in field wire connector onto the back of the alternator.
  5. Rotate the alternator forward away from the dash panel.
  6. Install the alternator mounting bracket in position on the vehicle.
  7. Install the bolt to secure the top of the alternator to the mounting bracket.
  8. Install the bolts to secure the outside of the alternator mounting bracket to the alternator mounting plate.
  9. Install the bolt to secure the top of the alternator mounting bracket to the engine air intake plenum.
  10. Tighten all of the alternator mounting bolts to 40 ft. lbs. (54 Nm).
  11. Install the accessory drive belt. Be sure the drive belt is correctly routed on the engine and correctly seated on all of the pulleys.
  12. Install the windshield wiper/motor module assembly.
  13. Reconnect the negative battery cable.
  14. Verify the charging rate of the alternator.

Hope helps woth this, remember rated this help. Good luck.

Jul 08, 2010 | 1997 Plymouth Grand Voyager

2 Answers

I have a 94 cherokee limited 5.2 v8. which transmissions are come


The 46rh is a hydraulic transmission as where the 46re is an electric transmission. With minor wiring you can replace the 46re with the 46rh but not the other way around. Your transmission would stay in limp mode and wouldn't shift out of 2nd gear. So the answer is no.

Aug 23, 2009 | 1994 Jeep Grand Cherokee

1 Answer

96 grand Cherokee charging problem


There is a 60A fuse in the power distribution box near the battery it is for your alt. Possibly there is a short or partially broken wire in the column harness. If shorted it may be causing fuse to blow, but that would need to be checked.

Feb 21, 2009 | 1996 Jeep Grand Cherokee

1 Answer

1996 Jeep Grand Cherokee intermittent voltage drop, lose electric


I wont list this as a solution, but it seems that working in the area of the alt may have moved around some wiring...the alt may be OK but perhaps an adjacent wire (maybe a ground) is not well connected. Also check crimped on wire loops on alt connectors..they like to corrode at the crimp where it crushes on the actual wire.

Feb 19, 2009 | 1996 Jeep Grand Cherokee

2 Answers

94 Jeep Grand Cherokee will not start


Sounds like the inline fuse popped. It is located in the wire that comes from the alternator to the battery. The alternator is sending out the juice, but it can't make it to the battery. I sincerely hope that this gets you on the road again. Best wishes and God Bless.
Bryon

Jan 27, 2009 | 1994 Jeep Grand Cherokee

1 Answer

1994 grand cherokee ltd. charging problem


Yes that little thing on the alt is the regulator. It tells the alt when to charge and when not to and yes its pcm controlled. You can bypass the pcm but I would not reccomend it. I would say alt is probably bad...Cause that pcm wire dosnt usually cause any issues. Youu can have the alt tested at autozone. They can test it in the car or out although out of the car is a much more thurough test. I would again say al is bad....rebuilt stuff is usually rebuilt with good parts from old units meaning most all the parts are used...

Jul 22, 2008 | 1994 Jeep Grand Cherokee

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