Shop Line: Timing belts loosening on some Acura 3.2L engines - Engine Builder Magazine
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Shop Line: Timing belts loosening on some Acura 3.2L engines


We’ve had complaints about timing belts loosening on some Acura 3.2L engines. Do you know of any solutions?

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The AERA Technical Committee offers the following information regarding a revised timing belt tensioner for 2002-2003 Acura 3.2L engines. This tensioner is part of a product improvement by Acura. Vehicles with the revised tensioner should be identified by a punched mark above the sixth digit of

the engine compartment VIN code as shown above.

The original design timing belt tensioner is filled with oil to dampen oscillation. Due to a manufacturing situation, the tensioner oil can leak. If enough oil is lost, the timing belt loosens and causes engine noise. The worst-case scenario is the belt may lose tension and allow the loss of cam timing. Refer to the chart (Figure 1) to determine which vehicles are affected.


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