2005 Dodge Viper Owner's Manual - Page 170

170 MAINTAINING YOUR VEHICLE To minimize the possibility of catalytic converter damage: • Do not shut off the engine or interrupt the ignition when the transmission is in gear and the vehicle is in motion. • Do not try to start the engine by pushing or towing the vehicle. • Do not idle the engine with any spark plug wires disconnected for prolonged period. Ignition Wiring System and Ignition Timing The ignition cables should be kept clean and properly connected. Terminals should be fully seated. Do not remove the nipple assemblies from the coil towers unless the nipples are damaged or cable testing shows high resistance or broken insulation. Refer to the Service Manual for the proper procedure to be followed for checking ignition cable resistance. Cracked, damaged, or faulty cables should be replaced. Because of the plastic body shell on your Viper, ignition cables should be replaced with the specially designed RFI cables available at your dealer. Ignition timing cannot be set on this vehicle.