Additional Checks
WARNING: This page is about a different car, the 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
Check for Electromagnetic Interference (EMI) by checking for the following:
- Monitoring engine speed on the scan tool may indicate EMI is present. A sudden increase in scan tool engine speed while actual engine speed remains constant indicates EMI is present.
- EMI on the ignition control circuit may cause a missing condition.