- 2-3 Flare at light throttle
- Harsh upshifts, downshifts & Forward
A broken clutch pressure control(CPC) valve spring
This replacement spring has a larger wire diameter, thereby decreasing total spring stress by more than 25%.
CPC Valve Spring
1996-1999 Honda Civic, Del Sol, CR-V, .480" long, for adjustable CPC valve
- Length: 0.480"
Common problems in the 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 has developed a replacement spring 88894 that has a wire diameter larger than the OE design. This significantly reduces the stress on the spring, preventing future breakage.
Early Design = .260" spring pocket; .480" long spring
Late Design = .390" spring pocket; .625" long spring