What happens if the catalytic converter does not work?
No Power The catalytic converter is a component of the exhaust system and must be kept free-flowing to allow the easy passage of exhaust. When a converter becomes clogged with debris or are broken, the engine has to work much harder to accelerate and idle because the exhaust pressure is backing up in the pipe.
Can a second ignition cause a car to fail emission test?
A second ignition can happen after the normal ignition, and the two can combine with enough power to cause engine damage. Your car fails the emission test. High temperatures in the combustion chamber allow the excessive formation of oxides of nitrogen, which are released through the tailpipe.
What happens when an ECM power relay goes dead?
If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead. The ECM power relay is one of the most important relays as it provides power for the vehicle’s computer system.
Where does the power come from in a cat engine?
A CAT Engine takes three different 12 volt power supply wires to the ECM. 1) keyed from the ignition switch to pin 70, 2) 12 volt battery power to pin 52, 3) 12volt battery power pin 53 Usually pin 52 and 53 are feed power from the battery on one wire that splits before the two pins at the ECM.
What happens when an ECM loses ignition power?
If it losing ignition (or key) power the key on/off counter will increase. It helps to further diagnose power problems. Most ECMs have more than one power wire.
Can a bad Powertrain Control Module cause a car to not run?
Will Not Run. In some cases, a PCM problem will cause the vehicle not to run at all. The PCM’s functions include positioning the crankshaft and controlling the ignition spark and timing. If there are problems with how the PCM performs these functions, the vehicle will not run and may even incur damage.
If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead. The ECM power relay is one of the most important relays as it provides power for the vehicle’s computer system.