Join Date: Mar 2002
Location: Austin, TX, USA
A common failure on modern cars is a faulty crank shaft position sensor, or a cam shaft position sensor (a.k.a. distribtor pickup). The ECM needs these signals to determine ignition and fuel injection sequences. If the sensor is damage, the ECU will not turn on ignition or fuel until it detects at least two revolutions of the engine.
Most service manuals (Haynes included) have diagnostic procedures for these sensors. It involves a Digital Volt Meter, some straight pins and test leads. Also, these two sensors often share the same power and ground. If your readings are skewed on both, try disconnecting one while testing the other.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI