Chrysler Newport Ignition Switch Guide: 1970-1976 Models
Is your classic Chrysler Newport having trouble starting or staying running? Your ignition switch might be the problem.
- Common symptoms include a no-start condition, stalling after starting, and flickering dash lights.
- The available aftermarket switch is for models WITHOUT a tilt steering column; you must verify your car's configuration.
- Standard Ignition is a reputable aftermarket brand known for producing quality parts for classic American vehicles.
- Before replacing, inspect the plastic wiring connector at the switch for signs of melting or burning, a common issue on these cars.
Is Your Newport's Ignition Switch Failing?
Over decades of use, the metal contacts inside the ignition switch on a classic Chrysler Newport wear out. This can cause a poor electrical connection, leading to a variety of confusing problems. Before you suspect the starter or battery, look for these common signs of a failing ignition switch.
Key Symptoms of a Bad Ignition Switch
- Engine Won't Crank: You turn the key to 'START' and hear a single click or nothing at all. The switch is failing to send power to the starter.
- Starts and Immediately Stalls: The engine fires up but dies as soon as you let the key return to the 'RUN' position. This is a classic sign that the 'RUN' circuit in the switch has failed.
- Stalling While Driving: The engine may suddenly shut off while driving, especially after hitting a bump. This is a very dangerous symptom caused by a temporary loss of connection inside the switch.
- Accessories or Dash Lights Flicker: Your radio, wipers, or dashboard lights may cut in and out. Wiggling the key might make them work intermittently, which points directly to a bad switch.
- Key is Hard to Turn: If the key feels stiff or binds, the mechanical parts of the switch or the lock cylinder could be worn out.
Check the Connector First
On Mopar vehicles from this era, it's common for the plastic plug (Molex connector) that connects the wiring to the ignition switch to overheat. Before replacing the switch, inspect this connector for any signs of melted plastic, charring, or burnt-looking metal terminals. If the connector is damaged, it must be repaired or replaced along with the switch.
Choosing the Right Aftermarket Ignition Switch
For a classic like the 1970-1976 Newport, finding a new original (OEM) ignition switch is nearly impossible. A used switch from a salvage yard is a gamble, as it could be just as worn as your old one. A new aftermarket part is the most reliable and practical solution.
Brand Quality: Standard Ignition (SMP)
Standard Motor Products (SMP), the maker of the Standard Ignition brand, is a well-respected name in the auto parts industry, known for making quality ignition parts for American cars for decades. For classic domestic vehicles, their parts are often considered a top-tier replacement choice, with a reputation for good fit and long-term reliability. Reviews often describe their switches as heavy-duty and dependable.
Important Fitment Note: Tilt vs. Non-Tilt
The available aftermarket ignition switch from Standard Ignition is designed for models without a tilt steering column. It is critical to verify if your Newport has a tilt wheel before ordering, as this part will not fit vehicles with that option.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Standard Ignition) | $85.04 |
| New OEM (NOS) | Not generally available |
| Used OEM | $25 - $75 (Varies by condition) |
| Shop Labor | $120 - $250 |
Frequently Asked Questions
Is replacing the ignition switch a DIY job?
For a non-tilt column, this is a moderately difficult job for a DIYer. The switch is located on the steering column and is accessed by removing the lower dash panels. It can be a tight space to work in. For cars with a tilt column, or if you are not comfortable with electrical work, it's best to leave this to a professional mechanic. Some procedures may require removing the steering wheel.
Are there any recalls for the Newport ignition switch?
No. Searches of the National Highway Traffic Safety Administration (NHTSA) database do not show any recalls for the ignition switch on the 1970-1976 Chrysler Newport. Recalls you may have heard about for Chrysler ignition switches were for much newer vehicles.
What's the difference between the ignition switch and the lock cylinder?
The lock cylinder is the mechanical part you put your key into. The ignition switch is the electronic part that the lock cylinder turns. If your key is hard to turn, the problem could be in the cylinder, the switch, or the linkage between them.
Could a bad ballast resistor cause similar problems?
Yes, on these classic Mopars, a failing ballast resistor can also cause a 'start and stall' condition. The ignition switch sends full battery voltage to the coil during starting but then routes power through the ballast resistor in the 'run' position. If you replace the switch and still have stalling issues, the ballast resistor is the next logical part to test.
Technical Specifications
For vehicles without a tilt steering wheel.
We Have This Part in Stock
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.