When to replace spark plugs in Saab 9-3 arc?
Spark plugs should be replaced every 60k miles on a 2004 Saab 9-3 Arc. It takes about 30min and your car will get better fuel economy versus that from worn out plugs.
What is the ignition system in a Saab 9-3?
The ignition system is used to generate the igniting spark, measure the combustion quality and knocking.
How does the engine control module work on a Saab?
The engine management systems in Saab 2.0t 4-cylinder engines control fuel supply, fuel injection, ignition and emissions. In these systems, an electronic microprocessor, the engine control module or ECM, processes a variety of sensor inputs to monitor engine and vehicle conditions. The ECM operates the engine in accordance with driver input.
Where is the CDM on a Saab 9-3?
CDM is located on a bracket on the left-hand side of the cylinder head. Start by removing the electrical connector. Unlock it by sliding the lock toward the firewall (red arrow). Then pull the connector straight up to remove it. Working at the CDM, remove the two 10mm fasteners (red arrows).
Where are the spark plugs on a Saab 9-3?
The ignition system receives four ignition trigger signals from the ECM and delivers two combustion signals plus one knock signal to the ECM. The ignition coils are screwed on above the spark plugs of the respective cylinders with an aluminum cover over them.
What does pin 3 on Saab 9-3 ignition coil do?
When pin 3 on each ignition coil is supplied with B+ by ECM, a power transistor integrated in the ignition coil will close the primary circuit where the primary winding comprises relatively few coils of copper wire. A magnetic field now gradually forms in the ignition coil.
The engine management systems in Saab 2.0t 4-cylinder engines control fuel supply, fuel injection, ignition and emissions. In these systems, an electronic microprocessor, the engine control module or ECM, processes a variety of sensor inputs to monitor engine and vehicle conditions. The ECM operates the engine in accordance with driver input.
CDM is located on a bracket on the left-hand side of the cylinder head. Start by removing the electrical connector. Unlock it by sliding the lock toward the firewall (red arrow). Then pull the connector straight up to remove it. Working at the CDM, remove the two 10mm fasteners (red arrows).
When to use a 7 series spark plug?
“7”series spark plugs have a colder heat range than”6″series and are, therefore, commonly used as an alternative plug on cars consistently run at high speeds or under heavy loads. Running too cold of plug for short trips will lead to fouling. This is more of a problem in the winter.
What should the gap be on a spark plug?
Check your new spark plug gap to ensure it matches the manufacturer’s spec. Mine are supposed to have a 0.039” gap and 3 were spot-on while 1 was slightly over at 0.041”. I gently tapped the ground electrode and kept checking the gap until it was back to spec.
Which is the best spark plug to replace?
Therefore, it is very important to adhere to the following guidelines : When replacing the spark plugs it’s important to check following: First Allow 30 seconds for the module to power down then remove the electrical plug to ensure your safety. Always use resistortype NGK spark plugs.
How big is the spark plug gap on a Saab?
The interval for Europe and the rest of the world (Saab lingo) is about the same but in kilometers. The recommended spark plug gap is 0.9-1.0 mm (0.035-0.039 inches) for the B207E (150 hp engine, not sold in the U.S.) and B207L (2003-2005 Linear, 175 hp).
Check your new spark plug gap to ensure it matches the manufacturer’s spec. Mine are supposed to have a 0.039” gap and 3 were spot-on while 1 was slightly over at 0.041”. I gently tapped the ground electrode and kept checking the gap until it was back to spec.
“7”series spark plugs have a colder heat range than”6″series and are, therefore, commonly used as an alternative plug on cars consistently run at high speeds or under heavy loads. Running too cold of plug for short trips will lead to fouling. This is more of a problem in the winter.
Do you clean the spark plug hole in the engine?
Always clean the spark plug hole in the engine because dirt can affect the torque measurement. Always tighten the spark plugs to the recommended torque, which is 21 ft.-lbs. This assures proper seating. Too loose and localized temperature can be too high and even pre-ignition can occur.