To start off with im not very clued up on the workings of my Accord 1990 H reg (JPN), but i've just noticed a problem with the Emissions light coming on after about 10 minutes into my journey. As soon as the light comes on (yellow engine light ) the revs drop and sometimes the it will stall at the lights. Also at about the same time the speedo stoped woking. Do any of you guys know what this might be. A guy at work thinks it maybe a sensor on the manifold, but i thought i might check with you guys before i removed the sensor and see if i can clean it up.
Any advice would be great.