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Problems for specific Toyota Avalon years:

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Newest reported 1999 Toyota Avalon problems

 

Verified for the Toyota Avalon

On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.

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Verified for the Toyota Avalon

The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.

 

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Verified for the Toyota Avalon

Debris can get into the idle air control valve. This will restrict the air flow into the engine, causing idle speed and/or stalling when cold. The valve can be cleaned or replaced to correct this concern.

15 Reports
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Verified for the Toyota Avalon

Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.

11 Reports
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Verified for the Toyota Avalon

Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.

 

19 Reports
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Verified for the Toyota Avalon

Toyota issued a recall on one of the connections in the steering shaft that was not welded properly, which could cause steering problems. This can be repaired free of charge at a Toyota dealership. The recall applies to only certain 2005 models only.

3 Reports
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Verified for the Toyota Avalon

The 6 cylinder engines have a tendency to leak oil from the valve cover gaskets, especially the one near the firewall.

35 Reports
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