Universal Motors introduced the Oldsmobile Alero in 1999. The 2001 Oldsmobile Alero was equipped with the preference of a 2.4-liter in-line 4-cylinder engine, or a 3.4-liter V-6 engine. Both engines bag a coil module and coil packs in the ignition step. Over duration coil packs can wear away, and replacement becomes the one choice. Testing the coil to produce persuaded it is properly functioning is a pleasant design to save cash, and properly diagnose what is absolutely misapprehension with the vehicle. Testing the coils on a 2001 Alero should share approximately one day.
Instructions
2001 Oldsmobile Alero: 2.4-liter, 4-cylinder Coil Testing Instructions
1. Elevate the hood of the Alero. Position yourself in front of the vehicle so that you can access the coil pack on the top of the engine. Unplug the electrical harness from the coil. The ignition coil is located on the passenger top side of the engine. Simply pull the electrical connector from the coil module by fist.
2. Install an ohmmeter onto the electrical connector stop of the administration module. Connect the dusky advance wire from the ohmmeter to the plug location clear with a "-". Assign the copper advance from the ohmmeter onto the plug point clear with a "+".
3. Study the dial indicator on the ohmmeter. Provided the coil on the 2001 Alero, 2.4-liter engine does not peruse preferable than 10,000 ohms of resistence, then the coil is pathetic and needs to be replaced.
2001 Oldsmobile Alero: 3.4-liter, V-6 Coil Testing Instructions
4. Raise the hood on the Alero. Label each spark plug wire on the coil module, using masking tape or labels. Write the numbers "1-2-3-4-5-and 6" on the spark plug wires from left to right.
5. Remove two spark plug wires from one of the coil packs. There are three coil packs, with two wires on each pack. Each pack controls two spark plugs. Set the plug wires on top of the engine, away from any moving parts. Step away from the vehicle so that no part of your body is touching the car at all.
Visually inspect the coil while the engine is cranking. Look for an electrical arc or spark to connect between the two coil towers while the engine is turning over. Ask your assistant to stop turning the key after no more than three intervals of cranking the engine. If the inspected coil has spark, then reinstall the spark plug wires and proceed to testing the next coil pack.6. Ask an assistant to turn the ignition key to the "Start" position for no longer than three second intervals. The vehicle will not start with the spark plug wires detached from the coil.
7. Remove the coil pack that has no spark, as well as the coil pack directly next to it. Use a 1/4-inch drive ratchet and socket to remove the two mounting screws that hold each pack in place. Switch the two coil packs by pulling both pack straight upward to remove them, and then placing them straight downward to attach them. Tighten the coil pack mounting screws back into the coil packs and module, with the 1/4-inch drive ratchet and socket. Leave the spark plug wires off of the suspected bad coil pack, but reattach all other spark plug wires.
8. Ask your assistant to again turn the key to the "Start" position for no longer than three second intervals. Do not touch the vehicle in any way while the engine is turning over. Visually inspect the coil pack towers of the suspected bad coil pack. If the coil pack does not have spark in this second position, then the coil is bad and needs replaced. If the coil that had no spark in its primary position has spark in the secondary position, then the coil module is bad and needs to be replaced.
