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Posted on May 23, 2012
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I have a 1991 jeep wrangler with a 2.5L. I replaced the distributor cap, spark plugs, battery, spark plug wire, and added some oil. My jeep is now making a chugging noise and a lack of horse power. Barely takes off in first. Anyone have any idea?

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Adam Scott Roberts

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  • Jeep Master 1,243 Answers
  • Posted on May 24, 2012
Adam Scott Roberts
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Sounds like you may have crossed the plug wires when putting them on the distributor cap.

5 Related Answers

ZJLimited

ZJ Limited

  • 17989 Answers
  • Posted on Sep 07, 2009

SOURCE: spark plug wire position on distributor cap

1-5-3-6-2-4
ALL Jeep 4.0 motors use this firing order. Any year, any model, high output or not.

Also, the spark plug wire placement on the cap, in a clockwise direction from the post nearest the engine block is: 6-2-4-1-5-3.(to the left side of the number 6 post, there should be a hold downscrew or strap for fastening the distributor cap to the distributor.
For a picture diagram, please go to this website:
- http://www.fixya.com/cars/t2859850-need_spark_plug_wiring_1993_jeep_4l
- http://www.jeepz.com/forum/engine/16923-six-cylinder-4-0-liter-jeep-engine-specs.html

Good luck (rated this help)

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Anonymous

  • 6982 Answers
  • Posted on Jan 26, 2009

SOURCE: spark plug order

Order is 153624 #1 plug is one closest to radiator. #1 tower on cap is one just past the cap hold-down screw (clockwise) furthest away from block. order runs clockwise around cap.(next time, remove them one at a time!!)

ZJLimited

ZJ Limited

  • 17989 Answers
  • Posted on Nov 18, 2009

SOURCE: need wiring digram from spark plugs to distributor cap

Review the Jeep ZJ Repair Manual in the Firing Order (page 10 and 11) for 4.0L 6-cyl and 5.2L 8-cyl.

I really hope hepled with this (remember rated this help) Good luck.

Jonah Oneal

  • 14092 Answers
  • Posted on Apr 23, 2010

SOURCE: I have a 1994 Jeep Grand Cherokee Laredo 6 Cyl.

CHECK ASD RELAY THAT IS AUTOMATIC SHUTDOWN RELAY IN THE POWER DISTRIBUTION CENTER UNDER THE HOOD IN ENGINE COMPARTMENT.IF ASD RELAY GOOD PROBLEM COULD BE CAMSHAFT SENSOR IN THE DISTRIBUTOR.TO SAVE TIME AND MONEY HAVE JEEP SCANNED FOR CAMSHAFT SENSOR AND CRANKSHAFT SENSOR FAULTS.

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Anonymous

  • 17 Answers
  • Posted on Sep 15, 2010

SOURCE: 1994 jeep grand cherokee limited

cps located on the top left side of the bellhouseing

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1991 Jeep Wrangler. It will run great for a few days than stall and die. If you let is sit for a day it will again run fine for a few days. Complete tune up has been done includng plugs and wires as...
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Oct 10, 2013 • 1991 Jeep Wrangler
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On a 94 Jeep YJ 2.5 what order do the spark plug wires go to the plugs off the distributor cap?
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How do you replace the distributor on an 89 jeep wrangler YJ
Jeep Wrangler/YJ 1987-1995 Repair Guide

DISTRIBUITOR
REMOVAL & INSTALLATION

2.5L Engine
1987-90 VEHICLES
See Figures 1, 2, 3 and 4

5686591.gif


Fig. 1: Exploded view of the distributor-1987-90 2.5L engine


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Fig. 2: Positioning the oil pump shaft for distributor installation-1987-90 2.5L engine


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Fig. 3: Positioning the distributor rotor and shaft for installation-1987-90 2.5L engine


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Fig. 4: Rotor position with the distributor properly installed-1987-90 2.5L engine




  1. Disconnect the negative battery cable.
  2. Remove the primary lead from the terminal post at the side of the distributor.

The wire connector will contain a special conductive grease. Do not remove it. The same grease will also be found on the metal parts of the rotor.
  1. Disconnect the vacuum line if there is one.
  2. Remove the two distributor cap retaining hooks or screws and remove the distributor cap.
  3. Note the position of the rotor in relation to the base. Scribe a mark on the base of the distributor and on the engine block to facilitate reinstallation. Align the marks with the direction the metal tip of the rotor is pointing.
  4. Remove the bolt that holds the distributor to the engine.
  5. Lift the distributor assembly from the engine.

To install, if engine was not disturbed:
  1. Insert the distributor shaft and assembly into the engine. Line up the mark on the distributor and the one on the engine with the metal tip of the rotor. Make sure that the vacuum advance diaphragm is pointed in the same direction as it was pointed originally. This will be done automatically if the marks on the engine and the distributor are line up with the rotor.
  2. Install the distributor hold-down bolt and clamp. Leave the screw loose enough so that you can move the distributor with heavy hand pressure.
  3. Connect the primary wire to the distributor side of the coil. Install the distributor cap on the distributor housing. Secure the distributor cap with the spring clips or the screw type retainers, whichever is used.
  4. Install the spark plug wires. Make sure that the wires are pressed all of the way into the top of the distributor cap and firmly onto the spark plugs.

If the engine was turned while the distributor was removed, or if the marks were not drawn, it will be necessary to initially time the engine. Follow the procedure below.
To install, if engine was disturbed:
  1. Rotate the engine until the No.1 piston is at TDC compression.
  2. Using a flat bladed screwdriver, in the distributor hole, rotate the oil pump gear so that the slot in the oil pump shaft is slightly past the 3:00 o'clock position, relative to the length of the engine block.
  3. With the distributor cap removed, install the distributor with the rotor at the 5:00 o'clock position, relative to the oil pump gear shaft slot. When the distributor is completely in place, the rotor should be at the 6:00 o'clock position. If not, remove the distributor and perform the entire procedure again.
  4. Tighten the lockbolt.



Remember rated this post; I hope help you with this.










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Aug 21, 2009 • 1989 Jeep Wrangler
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Driving down the highway and lost power. Replaced the distributor and coil. Will start occasionally. Most of the time no spark? What next?
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Jul 20, 2009 • 1994 Jeep Wrangler
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I am working on a jeep wrangler, 1991, it won't start, it has spark, fuel, injector pulse, compression. I installed a new distributor, wires, plugs, crank and cam sensors, what else could it be ?
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May 07, 2009 • 1991 Jeep Wrangler
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Spark plug order
Order is 153624 #1 plug is one closest to radiator. #1 tower on cap is one just past the cap hold-down screw (clockwise) furthest away from block. order runs clockwise around cap.(next time, remove them one at a time!!)
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