What are the most common Volvo C70 problems?

According to Au7o's analysis of 0+ owner reports, the 1999-1999 Volvo C70 has 2 documented issues. The most frequently reported are: Electronic Throttle Module (ETM) Failure, Timing Belt Tensioner and Idler Pulley Failure. Of these, 1 is rated critical and should be addressed promptly.

Is the Volvo C70 reliable?

The 1999-1999 Volvo C70 has 2 known issues documented across 0+ owner reports. 1 issue is rated critical: Electronic Throttle Module (ETM) Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Volvo C70 problems?

Repair costs for known Volvo C70 issues range from $300 to $1,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Electronic Throttle Module (ETM) Failure, typically costs $300-$800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 1998-2002 Volvo C70 Timing Belt Tensioner and Idler Pulley Failure?

The timing belt tensioner and idler pulleys fail, potentially causing the timing belt to slip or break. The 5-cylinder turbocharged engines are interference designs, meaning a broken belt results in catastrophic valve damage. Must be replaced on schedule. Repairs typically run $500-$1,000. Severity: critical.

1999 Volvo C70 Problems: 2 Issues Every Owner Should Know

1999 model year · 0+ owner reports · Updated April 2026

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According to Au7o's analysis of 0+ owner reports, the 1999 Volvo C70 has 2 documented known issues, with 1 rated critical. The most serious is Electronic Throttle Module (ETM) Failure ($300-$800 repair). Across all issues, repair costs range from $300 to $1,000. DIY maintenance guides at au7o.io.

All 2 Known Issues

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On the 1999-2005 Volvo C70, same ETM failure as other P2 platform Volvos. The early C70 (1998-2005, first gen) is most susceptible.

This issue also affects: Ford Explorer, Ford Transit, Ford Transit Connect

Common Symptoms

Reduced power mode
Stalling
Check engine light

How to Fix

Confirm ETM failure by scanning for throttle-related DTCs such as P0121, P0221, P2135, or limp-home faults, then use live data to verify erratic throttle angle signals and inspect the ETM connector and wiring before condemning the unit. On 1999-2001 cable-throttle transition and early ME7-equipped C70 models, the usual fix is replacement of the original Magneti Marelli electronic throttle module with the updated Volvo unit or a professionally rebuilt contactless-sensor ETM, followed by software download/adaptation with VIDA/DiCE. Clean the throttle bore only if carbon buildup is minor; cleaning will not repair worn internal position sensors. Typical repair cost is about $700-$1,400 depending on whether a new OEM ETM, rebuilt unit, and dealer software reload are required.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

UpgradeBluetooth OBD-II scanner for reading engine codes and monitoring live data (BlueDriver Bluetooth OBD2 Diagnostic Scan Tool)
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UpgradeQuality synthetic oil and filter combo for engine maintenance (Mobil 1 Full Synthetic Oil and Filter Bundle)
View on Amazon

Typical repair cost:$300 - $800

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