Symptoms:

2-3 Flare at light throttle
Harsh upshifts/downshifts & Forward

Cause:

A broken CPC (clutch pressure control) valve spring

Correction:

Sonnax CPC valve spring has a larger wire diameter, thereby decreasing total spring stress by more than 25%.

Honda, Acura 4-Speed, 2-Shaft

CPC Valve Spring
Part No. 88894

Fits '96–'99 A4RA, B4RA and M4RA. For use in early-style units with .260" deep spring pocket and .480" long spring.

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Common problems in the Honda/Acura A4RA, B4RA and M4RA transmissions are harsh upshifts, downshifts and Forward engagements, while Reverse engagement is fine. These problems can be caused by a broken CPC (clutch pressure control) valve spring. The spring is located in the secondary valve body and is not available from Honda. Sonnax CPC valve spring 88894 has a wire diameter larger than the OE design. This significantly reduces the stress on the spring, preventing future breakage.