A Guide to the Engine Timing Belt for the 1998-2000 Volvo S70
Understanding this critical part can save you from catastrophic engine failure in your S70.
- This is an interference engine; a failed timing belt will cause catastrophic damage.
- Replace the belt every 70,000 miles or 7 years, whichever comes first.
- Always buy a complete kit with the belt, tensioner, and idler pulley; also replace the water pump.
- For 1998 models, you must check your engine serial number to get the correct tensioner type.
Is This a Critical Replacement?
Yes, this is one of the most important maintenance items for your 1998-2000 Volvo S70. Because it has an interference engine, a broken timing belt will lead to catastrophic engine damage that can cost thousands of dollars to fix. It is far cheaper to replace the timing belt on schedule than to repair a damaged engine. The recommended replacement interval is every 70,000 miles or 7 years, whichever comes first. If you have a used S70 without service records, you should replace the timing belt immediately for peace of mind.
Special Note for 1998 S70 Owners
For the 1998 model year, Volvo used two different timing belt tensioners: a hydraulic type and a mechanical type. The change happened at engine serial number 1266128. You must check which version your car has before ordering parts. Engines up to serial #1266127 use the hydraulic tensioner, while engines from #1266128 and up use the mechanical tensioner. 1999-2000 models use the mechanical tensioner.
Symptoms of a Failing Timing Belt
A timing belt can fail without any warning. However, there are sometimes signs that it's getting worn. 🎬 Watch this video to identify common signs of belt failure. Listen for a ticking or tapping noise coming from the engine, which could mean the belt is worn or the tensioner is failing. Other symptoms can include engine misfires, difficulty starting, or an oil leak near the timing belt cover. If you notice any of these signs, have the belt inspected immediately.
Choosing the Right Aftermarket Part: Kits and Brands
For a job this critical, it is highly recommended to buy a complete timing belt kit. A good kit includes the belt, a tensioner, and at least one idler pulley. The most common reason for a new belt to fail is the failure of an old tensioner or idler bearing. Many mechanics also recommend replacing the water pump at the same time, since the timing belt has to be removed to access it.
While you can buy Genuine Volvo parts, many aftermarket companies are the Original Equipment Suppliers (OES) for Volvo. Choosing a kit from one of these brands can give you the same quality at a better price.
- Top Tier (OES Quality): Brands like Continental and Gates are widely considered to be OEM suppliers or of equivalent quality for European cars. Kits from these brands often include high-quality INA tensioners and Aisin water pumps, which are also OES brands. These are the most recommended choices for reliability.
- Mid-Tier (Reputable Aftermarket): Dayco is another well-regarded brand that produces reliable timing belt kits.
- Other Brands: Bando and Cloyes are also available. While they are known brands, Continental and Gates are more frequently recommended by Volvo specialists for this specific application.
Pro Tip: Always buy a complete kit that includes the belt, tensioner, and idler(s). The small extra cost for a kit that also includes a water pump is a smart investment, as it saves you from having to pay for the same labor twice if the water pump fails later.
Cost of Replacing a Volvo S70 Timing Belt
The cost can vary based on your location and the shop you choose. The parts themselves are not the most expensive part of the job; the labor is what costs the most because many other parts have to be removed to get to the belt.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Kit | $135 - $350 |
| New OEM Kit | $350 - $605 |
| Shop Labor | $329 - $519 |
| Total Professional Job | $480 - $1,088+ |
Frequently Asked Questions (FAQ)
Is the 1998-2000 Volvo S70 engine an interference engine?
Yes, all five-cylinder engines used in the S70 are interference engines. This means if the timing belt breaks, the pistons and valves will collide, causing catastrophic engine damage.
Should I replace the water pump with the timing belt?
It is highly recommended. The water pump is driven by the timing belt and is located behind it. Replacing it during the timing belt job saves you from paying for the same labor all over again if the pump fails before the next belt change.
Can I replace the timing belt myself?
This is considered an advanced DIY job. While it doesn't require many highly specialized tools, any mistake in setting the timing can destroy the engine. If you are not an experienced and confident mechanic, it is best to leave this job to a professional.
Are there any recalls on the S70 timing belt?
No, there have been no recalls issued by the National Highway Traffic Safety Administration (NHTSA) for the timing belt or its related components on the 1998-2000 Volvo S70.
Helpful Videos
Technical Specifications
For 1998 models, check engine serial number for hydraulic (up to #1266127) or mechanical (from #1266128) tensioner. 1999-2000 models use the mechanical tensioner.
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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