The distributor cap and rotor top top the dodge Ram are wear items that occasionally need replacing. No just do these components wear from continuous use, however they room made the plastic the can come to be brittle and fail with age. V the cap and rotor being such essential parts of the ignition system, continual maintenance is recommended to store your ram truck to run at it"s best.

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This article uses to the Dodge ram 1500 (1994-2001).

The distributor cap and rotor top top the second generation Dodge ram 1500 are an essential components the the ignition system. Voltage indigenous the ignition coil is sent straight to the turn rotor within of the distributor, which then transfers the voltage to every contact suggest of the distributor cap. The electrical charge is then sent from the distributor lid to every of the engine"s spark plugs via spark plugs wires in ~ the an accurate time for combustion to occur. End time, the contact points top top the distributor cap and rotor have the right to wear, have extreme carbon buildup, or also break. Typically, these worries will cause reduced engine performance; however, in significant cases, a fail distributor lid or rotor will stop your engine from to run at all. Maximize her engine"s performance by installing new a distributor cap and rotor.

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Materials NeededFlat head screwdriverPhillips screwdriver, 7mm wrench, or 7mm socket through 1/4" ratchet and also extensionPainter"s tape and pen/marker

Step 1 – eliminate airbox assembly

The distributor is located underneath the airbox assembly and also behind the accelerator body. Come gain access to the distributor, the airbox assembly requirements to be removed.

First, remove the air intake tube off the the airbox. Using gentle force, on slide the pipe away indigenous the airbox and also position it the end of the way.Remove the rubber breather hose. Depending on engine model, this hose may be situated on the left or right side the the airbox. This tube simply slides on and off of the airbox nipple.On the underside of the airbox, ease the water tap clamp securing the airbox to the accelerator body.With every fittings disconnected, lift increase on the airbox assembly and remove it from the engine bay.
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Figure 1. Airbox remove points.
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Figure 2. Loosening water tap clamp securing airbox to accelerator body.

Step 2 – Label and also remove spark plug wires

With the airbox assembly removed, the distributor is currently accessible.

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Figure 3. Distributor location.Located behind the accelerator body, the distributor cap has each spark plug cable attached come a designated position on the cap. Using the diagrams situated in figure 4, label each spark plug wire through its linked cylinder number. Starting with spark plug wire #1, follow the engine firing order and label each succeeding spark plug cable by moving roughly the distributor in a clockwise motion. The continuing to be wire in the facility of the distributor cap is the coil wire. Labeling the spark plug wires will certainly ensure they room reinstalled in your correct positions upon reassembly. Failure to appropriately identify and also install the spark plug wires can an outcome in engine misfiring.
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Figure 4. V8 and also V6 engine firing bespeak diagrams.With the spark plug wires labeled, remove all wires from the distributor cap. Wiggling and slightly twisting the wire boots when pulling upwards will help in removal.
Pro Tip

It is a great idea to trace the spark plug wires from every cylinder ago to the distributor cap as soon as labeling the wires.


Step 3 – replace distributor cap and also rotor

Now that the spark plug wires and coil cable are removed from the distribitor cap, the cap can be removed from the distributor.

Using a a 7mm wrench, socket & ratchet, or Phillips screwdriver, ease the two distributor cap fasteners. The fasteners are located at the 3 & 9 o"clock location at the basic of the cap. After ~ loosening the fasteners, remove the distributor lid by just lifting the up. A little bit of maneuvering might be forced to remove the cap from the engine bay together the to the right is a little bit tight at the back of the engine.After removed the cap, the rotor can be gotten rid of by simply providing it for sure tug upwards. Execute not worry about marking that orientation as the distributor shaft has a small groove to permit the rotor to just be mounted one way.
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Figure 5. Brand-new distributor cap and also rotor.

Next, install the new rotor in the distributor. As formerly mentioned, there is a groove in the distributor pillar to certain correct positioning of the rotor.

Install the new distributor lid onto the distributor. Note that among the fastener mounts in the lid is square, when the various other is rounded to protect against the cap from being incorrectly installed. Additionally, the distributor cap should have actually a #1 stamped on the to show the place of the lid which should, depending upon engine configuration, challenge towards the 7 or 9 o"clock place when mounted (See number 5 because that the number "1" stamped into the cap). Be certain that the cap is appropriately seated in location on the distributor and tighten the fasteners. A misaligned cap will certainly interfere through the move of electric voltage from the rotor to the distributor cap and also prevent ideal combustion from occurring.


Pro Tip

It is constantly a an excellent idea to to compare the new distributor cap and rotor to the old contents to ensure your have the exactly parts. If either component is incorrect, her truck will most likely not run for absence of spark being delivered to the engine.


Step 4 – Reinstall spark plug wires and start truck

After the brand-new cap and also rotor have been installed, reattach the spark plug wires and also coil cable to the distributor cap. The labeling the the wires perfect in action 2 will certainly come in comfortable and allow you to reinstall the wires in the correct position on the cap. Press down firmly on each wire boot until an audible "click" is heard come ensure the wires are appropriately seated on the cap.With every wires appropriately in place on the cap, start the truck and check the the engine is to run properly. If the engine is misfiring or backfiring, close up door the truck off and check that the spark plug wires are set up in your correct positions.
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Figure 6. Begin the van to inspect engine operation.

Step 5 – Reinstall airbox assembly

If the truck checks out it s okay after a test start, continue with reinstalling the airbox assembly. Be certain the base of the airbox is seated appropriately over the throttle body prior to tightening the hose clamp. Download the entry tube and rubber breather hose.

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Figure 7. Airbox reinstalled and ready to drive.

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Pro Tip

If your truck is ready for a brand-new air filter, the is perfect time to replace it together the airbox assembly has already been eliminated from the vehicle and the filter deserve to be quickly and also easily replaced.