Black smoke coming from your Opel Signum’s exhaust is definitely a concerning problem. Different colored exhaust can mean different things. Black smoke is typically of greater concern than white smoke. Dark black smoke coming from the exhaust of your Signum indicates that there could be a serious engine problem, and indicates that the air/fuel mixture … Read more
One of the most alarming sounds you can hear from your Opel Signum is the engine knocking. Unfortunately, an engine knock can be a sign of significant engine problems. The first thing you should do is check your Signum’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant getting into … Read more
The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Opel Signum’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your Signum’s ECU. … Read more
One of the most inconvenient things that can happen to your Opel Signum is when the speedometer stops working. You don’t realize how much you look at the thing until it’s always sitting at 0 MPH while driving down the road. If your car’s speedometer is not working, it’s usually caused by an issue with … Read more
One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Opel Signum isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. It is entirely possible for your Signum’s heater to work just fine even when the air conditioner is blowing … Read more
Fuel injectors can go the life of a modern vehicle with little to no trouble at all. That being said, bad fuel injectors are one of the more common issues that happen to any vehicle (Opel Signum included). There’s always more than one fuel injector, and even one going bad is enough to make … Read more
If your Opel Signum’s steering wheel is shaking, you should deal with it immediately. A shaking steering wheel in the Opel Signum is caused by anything from the wheels and tires through the suspension (ball joints, tie rods, etc.) to the braking system. We’ll start with the easiest things to check and move towards things … Read more
One of the most common issues with the Opel Signum, or any newer GM vehicle, is the “Service StabiliTrak” warning. StabiliTrak is GM’s electronic stability control system. It does much more than a standard traction control system. It is one of the most innovative and vital safety features on your Opel Signum and can … Read more
Bad Coil Packs are one of the more problematic ignition issues that can occur with the Opel Signum. A bad oil pack can make your Signum almost un-drivable. Or it may have little effect at all on the engine’s ability to run. It’ll get worse as they lose their ability to fire the spark plugs. … Read more
If your Opel Signum doesn’t start, you’ve found the right article. Many different issues can cause the problem. We cover all the likely ones in an order that makes sense when diagnosing the issue at home. This article is written with the assumption that you are looking for a way to get your Opel Signum … Read more