Ford Cougar Accessory Drive Belt Replacement Guide for 1985-1987
Keep your Cougar's 3.8L or 5.0L engine running smoothly by knowing when and how to replace your accessory drive belt.
- Your 1985-1987 Cougar uses a single serpentine belt for both the 3.8L V6 and 5.0L V8 engines.
- A high-pitched squeal is the most common early warning sign that your belt needs attention.
- Always confirm your engine size (3.8L or 5.0L) before ordering, as they use different belts.
- While replacing the belt, inspect the tensioner and idler pulleys for noise or wobble and replace if necessary.
Is Your Cougar's Accessory Belt Failing?
The accessory drive belt is a wear item, just like brake pads or tires. Made of durable EPDM rubber, it is designed to withstand heat and friction for tens of thousands of miles. However, it will eventually wear out. Most belts on a vehicle from this era should be inspected regularly and replaced if any signs of wear are present. Ignoring a failing belt can leave you stranded when it finally snaps.
Critical Failure Warning
If the accessory drive belt breaks, your car will immediately lose power to key systems. The power steering will fail, making the wheel very difficult to turn. The alternator will stop charging the battery, and the engine will quickly overheat if the belt drives the water pump. If your belt breaks, pull over safely as soon as possible and shut off the engine to prevent severe damage.
Choosing the Right Aftermarket Belt
For a 1985-1987 Ford Cougar, you do not need to hunt down an expensive Original Equipment (OE) belt from a dealership. High-quality aftermarket brands offer excellent performance and durability that often meets or exceeds the original specifications. When shopping for a replacement, it's important to know which engine your Cougar has.
- 3.8L V6 Engine: Uses a specific length and routing.
- 5.0L V8 Engine: Uses a different belt than the V6.
Always confirm your engine size before ordering a new belt. The presence of certain options, like air conditioning, can also affect the required belt length. The surest way to get the right part is to match the year, model, and engine size.
Brand Quality: Gates
Gates is a widely respected and trusted brand in the aftermarket for accessory belts. Professional mechanics often prefer Gates for its reliability and quiet operation, which is comparable to original equipment quality. Choosing a premium aftermarket belt from a brand like Gates ensures a durable part that you can depend on.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Belt (Gates) | $25 - $35 |
| Shop Labor | $75 - $150 |
Frequently Asked Questions
Can I replace the accessory drive belt myself?
Yes, this is a very DIY-friendly job for someone with basic tools. The most important part of the job is releasing the tension on the belt tensioner. Before removing the old belt, it is essential to make a drawing or take a clear picture of how the belt is routed around all the pulleys. Installing the belt incorrectly will prevent the car from running properly.
What's the difference between an accessory belt and a timing belt?
The accessory belt is the visible belt on the front of your engine that runs your accessories. A timing belt (or timing chain, in the case of the 5.0L V8) is located inside the engine behind a cover and keeps the engine's crankshaft and camshafts synchronized. An accessory belt failure will disable your car, but a timing belt failure can cause catastrophic engine damage.
Are there any recalls for the accessory belt on my Cougar?
No, there are no active recalls or widespread Technical Service Bulletins (TSBs) from Ford or the NHTSA for the accessory drive belt system on the 1985-1987 Ford Cougar.
Should I replace the belt tensioner at the same time?
It's a very good idea. The spring-loaded tensioner keeps the belt tight but can weaken over time. While the belt is off, spin the tensioner pulley and any idler pulleys by hand. If they feel rough, make a grinding noise, or wobble, they are worn out and should be replaced. A bad tensioner can cause a brand new belt to fail quickly.
Technical Specifications
OEM Part Numbers: E5LY8620A E6SZ8620A
The system uses a single, multi-rib (serpentine) belt made of EPDM rubber. Belt length varies based on engine (3.8L V6 or 5.0L V8) and the presence of accessories like A/C. A spring-loaded tensioner maintains belt tension.
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.
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