October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Speed Modulated DECEL Valve

Raise rear of vehicle and place jacks under axle housing. To check vacuum solenoid, place transmission in drive, raise engine speed until speedometer is above 11 MPH. Release throttle and allow speed to drop. Vacuum gauge should show vacuum until speedometer reaches 11 MPH and then below 11 MPH vacuum gauge should show zero vacuum.