1989-1993 Dodge D150 Wiper Motor: A Complete Replacement Guide
Don't get caught in the rain—here's what you need to know before replacing the wiper motor on your classic Dodge truck.
- Always check the plastic wiper linkage bushings first; if the motor runs but wipers don't move, the bushings are the likely culprit.
- Common failure symptoms include wipers only working on high speed, moving slowly, or not parking in the correct position.
- Replacement is a straightforward DIY job that takes about 1.5 hours and requires only basic hand tools.
- There are no specific recalls for the wiper motor on the 1989-1993 D150; all failures are due to age and wear.
Is It Really a Bad Wiper Motor?
PRO TIP: Check Your Wiper Linkage Bushings First! On these first-generation Dodge trucks, a very common failure point is not the motor itself, but the small plastic bushings that connect the motor to the wiper linkage. These bushings become brittle with age and break, causing the linkage arm to fall off the motor.
Symptom: You can hear the wiper motor running or humming under the cowl, but the wiper arms don't move or only one moves. This almost always means you have a broken bushing, which is a much cheaper and simpler fix than replacing the entire motor.
Symptoms of a Failing Wiper Motor
If you've ruled out the linkage bushings, your wiper motor itself may be failing. The signs are usually obvious and get worse over time.
- Slow or Stuttering Wipers: The wipers move much slower than they used to, even on the fastest setting. They may seem to struggle or hesitate as they sweep across the glass.
- Wipers Only Work on One Speed: Often, the motor will only work on the high-speed setting, while the low-speed and intermittent settings stop functioning.
- Wipers Won't 'Park': When you turn the wipers off, they stop immediately wherever they are on the windshield instead of returning to their resting position at the bottom. This points to a bad internal park switch in the motor.
- No Movement, Possible Humming: The most obvious sign is that the wipers don't move at all. If you hear a humming or buzzing noise when you activate the switch, the motor is getting power but is seized internally. If you hear nothing, you should check the fuse first before condemning the motor.
Choosing the Right Aftermarket Wiper Motor
For a vehicle like the 1989-1993 D150, new OEM parts are scarce. The aftermarket is your primary source. Quality can vary, so it's important to know what you're buying.
Brand Tiers for Your Dodge D150
- Good: Replacement Brand
This is a budget-friendly, standard-replacement option. These motors are new and designed to be a direct fit, matching the original unit's mounting points and electrical connections. For a truck that sees occasional use, this can be a cost-effective way to restore wiper function. - Better: Cardone (New)
Cardone is a major player in the aftermarket and offers both new and remanufactured parts. Their new units are reverse-engineered to identify and sometimes correct original design weaknesses. However, be aware that Cardone's remanufactured parts have a mixed reputation in online forums, with some users reporting out-of-the-box failures. When choosing Cardone, verify if you are purchasing a new or remanufactured unit.
Typical Replacement Costs
The cost to replace your D150's wiper motor depends on the part you choose and whether you do the work yourself.
| Part or Service | Estimated Cost |
|---|---|
| DIY Parts (New Aftermarket) | $60 - $172 |
| Shop Labor | $110 - $165 |
| Total Professional Replacement | $170 - $337 |
Frequently Asked Questions (FAQ)
Can I replace the D150 wiper motor myself?
Yes, this is a very DIY-friendly job for someone with basic hand tools. The process involves removing the wiper arms and the plastic cowl panel to access the motor. The entire job can typically be done in about 1 to 1.5 hours.
What causes the wiper motor to fail?
On a truck of this age, failure is almost always due to simple wear and tear. The internal gears wear out, electrical contacts in the park switch burn out, and the motor itself just gets weak. Trying to run the wipers when they are frozen to the windshield with ice can also put extreme stress on the motor and cause it to burn out.
Do I need any special tools for the replacement?
No special tools are required. You will need basic sockets (likely 10mm), a Phillips head screwdriver, and possibly a small pry bar or a dedicated wiper arm removal tool if the arms are stuck on the pivots. Sometimes a piece of wood can be used to help pry the arms off without damaging the cowl.
Are there any recalls on the 1989-1993 D150 wiper motor?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or major technical service bulletins (TSBs) for the wiper motor on this specific generation of Dodge truck. Failures are considered age-related.
Technical Specifications
Mounts to firewall under cowl panel. Connects via a multi-pin electrical connector and a single crank arm to the wiper linkage.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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