Do-it-yourself Opel Astra n ignition coil repair

Repairing the Opel Astra N ignition module is only a temporary measure that a motorist can only do at his own risk, since the device needs to be replaced.

Is repair possible in principle? The Opel Astra H ignition module is a common problem for the owners of this car. You can often find discussions and videos about the malfunction of this node. Obviously, most of those who encountered the problem thought about the possibility of repairing a part. As a rule, repairs are less expensive. Let's figure out the intricacies of the unit and consider the option of returning the spare part to work.

The ignition module is a system that gives off the electrical charge necessary for the spark to appear on the plug. The operation of any ICE without this module is impossible.

The part collects electrical current in the required amount (up to 30,000 V) and transmits voltage to the spark plugs through high-voltage wires. Adaptations are:

• separate - a separate coil is supplied to each spark plug;
• block - the design (one module) is used immediately for a number of cylinders (this is exactly the option in the Opel Astra H).

Many people think that the module and the ignition coil are the same thing. This is partly true, because the ignition module is a consequence of the coil. However, the coil was integrated into earlier vehicles as the main unit. Now, the coil is part of the design of the part.

The module is controlled by sensors and electronic systems. Information from the internal combustion engine operation sensors goes to a special controller, which controls the ignition system.

Video (click to play).

Typical and obvious symptoms for which you should think about replacing or repairing the ignition module on the Opel Astra H are:

• Floating speed and engine "triple".
• Illumination of the "Check Engine" indicator on the dashboard.
• Carbon deposits on spark plugs. Appears from a weak spark (insufficient voltage) on the candle. In this case, the spark itself should be dull, bluish in color.

The reasons for the failure of a spare part may be:

• Poor quality fuel.
• Any voltage fluctuation up / down can damage the module.
• Closing the second winding. It is detected by checking the resistance between connectors 1 and 4, as well as 2 and 3 of the module. Deviation of readings from 5.5-5.6 KOhm is the cause of the short circuit.

The most common reason why a module fails on Astra H is a violation of the integrity and tightness of its case. In other words, a breakdown of the case occurs and a through gap (hole) is formed in it. In this case, it is required to restore the tightness of the module, but you need to understand that this is a temporary measure and in the future the part will still have to be replaced.

To dismantle the block, you must:

1. Open the hood of the vehicle.
2. Disconnect the battery terminals.
3. Remove the blanking cover (labeled Ecotec).
4. In the exposed space, there are contacts on the right. They are detached with a flat head screwdriver.
5. We unscrew the two bolts fixing the module (TORX 40).
6. We remove the device with a sharp but neat movement in the "up" direction.

Now you can insert a new unit and assemble everything in the reverse order, or repair the faulty one yourself.

In order to make repairs and restore the tightness of the body of the spare part, you need:

1. Find a breakdown on the part body and inspect it carefully.
2. Clean out and scrape the hole from carbon deposits with a burmashinka or scalpel.
3. Drill deep into the area of ​​the breakdown (preferably to the metal) closer to the candle.
4. Clean up the breakdown zone.
5. Fill the sample with two-component cold welding (eg Poxipol); epoxy will also work.

Next, the part is put in place, and the assembly takes place in the reverse order described above. The Check Engine will turn off while errors are cleared using the Opcom or EML diagnostic system. The whole process can be seen in detail in the video below.

Restoring the integrity of the module body is only a temporary measure and does not guarantee a repeated relapse. It is advisable to purchase a new node. However, troubleshooting should be known to every Opel Astra owner, since the problem is quite common, and it is not always possible to replace it quickly.

Description: Let's talk about Astra J.

ufo666 » 02.10.2016, 20:58

Well, I repaired the ignition module