I have a 1984 Buick with CCC emission control. I am getting a code of 21 (high voltage on throttle position sensor input). I have connected an ohmmeter to the sensor and cycled it through the full range of motion. The ohmmeter tracks the sensor without gaps. Why would I get this code and where should I look for problems in the circuit? What resistance readings should I look for?
Also: I have a sensor I cannot identify. It is in the intake manifold and the connector is a coaxial type instead of two pins. The connector has rotted, but I cannot find a replacement connector or even a listing for such a part. What is this sensor?
Thursday, June 1st, 2006 AT 7:51 AM