1990 Mercury Grand Marquis Engine Control Modules (ECM)
Keep Your 1990 Mercury Grand Marquis in Top Shape with Quality Engine Control Modules (ECM)
Whether you’re repairing or upgrading your Engine Control Modules (ECM), using high-quality parts is key to keeping your 1990 Mercury Grand Marquis looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Computer Control Relays and Engine Control Module Relays. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1990 Mercury Grand Marquis Engine Control Modules (ECM) at Advance Auto Parts is around $49.99, with a range that starts at $36.99 and goes up to $62.99. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Carquest Multi-Purpose Relay, RAA1257 and Carquest Multi-Purpose Relay, RAA1743 start at just $36.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Control Modules (ECM), don’t forget to check out other key components like Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1990 Mercury Grand Marquis in peak condition, inside and out.
Find Your Specific 1990 Mercury Grand Marquis Engine Control Modules (ECM)s
Looking for the perfect Engine Control Modules (ECM) for your 1990 Mercury Grand Marquis? You’re in the right place. Below, you’ll find links to various types of Engine Control Modules (ECM) that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Control Modules (ECM)s, ensuring durability and a precise fit for your Mercury Grand Marquis. Whether you’re driving a 1990 model or another popular model year like
1991,
1992,
1993,
1994,
1995,
1996,
1997,
1998, and
1999, we’ve got you covered. Purchasing Engine Control Modules (ECM)s from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Control Modules (ECM)s that fit your vehicle.
Essential 1990 Mercury Grand Marquis Engine Control Modules (ECM)
Carquest Premium – Carquest Multi-Purpose Relay, RAA1257 (Part No.RAA1257)
from
$62.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
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Carquest Premium – Carquest Multi-Purpose Relay, RAA1743 (Part No.RAA1743)
from
$36.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
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Popular 1990 Mercury Grand Marquis Engine Control Modules (ECM) Categories
Most Popular Computer Control Relay for 1990 Mercury Grand Marquis
Enhance your 1990 Mercury Grand Marquis with this popular Computer Control Relay we have in stock, for $36.99.
Carquest Premium – Carquest Multi-Purpose Relay, RAA1743 (Part No.RAA1743)
from
$36.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
Best-Selling 1990 Mercury Grand Marquis Engine Control Module Relay
Upgrade your Grand Marquis with our best-selling Engine Control Module Relay.
Carquest Premium – Carquest Multi-Purpose Relay, RAA1257 (Part No.RAA1257)
from
$62.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
See More
FAQs for 1990 Mercury Grand Marquis Engine Control Modules (ECM)s
What are the best-selling Engine Control Modules (ECM)s for 1990 Mercury Grand Marquis?
Out of 2 Engine Control Modules (ECM)s that fit 1990 Mercury Grand Marquis, the following parts are the top sellers:
- Carquest Multi-Purpose Relay, RAA1257 (12473018) – $62.99
- Carquest Multi-Purpose Relay, RAA1743 (12459476) – $36.99
What’s the price range for 1990 Mercury Grand Marquis Engine Control Modules (ECM)?
The prices of Engine Control Modules (ECM) for the 1990 Mercury Grand Marquis range from $36.99 up to $62.99 for the most premium parts.
What is the average price of an Engine Control Modules (ECM) for a 1990 Mercury Grand Marquis?
The average price for Engine Control Modules (ECM)s for the 1990 Mercury Grand Marquis is $49.99. Keep in mind the variety of part types within our Engine Control Modules (ECM) category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Control Modules (ECM) for other Mercury Grand Marquis model years?
What are the cheapest Engine Control Modules (ECM) for my 1990 Mercury Grand Marquis?
The cheapest 1990 Mercury Grand Marquis Engine Control Modules (ECM) we carry are:
- Carquest Multi-Purpose Relay, RAA1743 (12459476) – $36.99
- Carquest Multi-Purpose Relay, RAA1257 (12473018) – $62.99
Does Advance Auto Parts sell Engine Control Modules (ECM) for any other 1990 Mercury models?
Yes. We stock Engine Control Modules (ECM) for 2 other popular 1990 Mercury models. Some of the most popular are 1990 Colony Park Engine Control Modules (ECM), 1990 Sable Engine Control Modules (ECM), and 1990 Topaz Engine Control Modules (ECM).
What types of Engine Control Modules (ECM) do you sell for my 1990 Mercury Grand Marquis?
As of 8/2/26, these are some of the most in-demand types of Engine Control Modules (ECM) for a 1990 Mercury Grand Marquis:
Can I get help with 1990 Mercury Grand Marquis Engine Control Modules (ECM) orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Engine Control Modules (ECM) and more.
What is your return policy for Mercury Grand Marquis Engine Control Modules (ECM)?
Advance Auto Parts keeps returns simple. For new Mercury Grand Marquis Engine Control Modules (ECM) and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.