(also posted in alt.autos.toyota)
Have 93 4runner 6 cylinder auto.
About a week ago the speedometer started dropping to 0, the odometer stopped & cruise control kicked off. Other times the speedometer would bounce around & then go to 0. Then the problem would go away for a while. If it stayed off for over a couple of minutes then the engine check light came on. I was hoping the problem would move from intermittent to hard so I could take it to the dealer.
Tonight my wife came home and said its now worse. First the speedo stopped, then the engine check light (same as before), then the tach started bouncing around the engine reved high but truck stayed the same speed then it started surging/lurching. She said you could press the gas but it would only go slow, but the engine rev'd up!
So in to the dealer tomorrow. Any ideas? Is there a computer chip involved?