Today, I initiated the engine of the v8 vehicle to move it out of the garage. After disconnecting the trickle charger, I attempted to start the engine, but it took three times longer than normal. Furthermore, the engine exhibited irregular behaviour, including rough idling, stuttering, and failure to increase in RPM when the throttle was applied. It seemed as if the engine was not functioning properly on all eight cylinders and was at risk of stalling. I deactivated and then rebooted, but the same issue persisted. Due to my laptop's power failure, I was unable to connect the vaccom. As a substitute, I connected a basic one and saw the pictures shown below. After restarting the automobile, it functioned flawlessly as if no previous issues had occurred, running smoothly and pleasantly.
According to my friend, the issue might have been caused by a faulty secondary air pump relay. I found the relay, cleaned it, and it functioned properly. I then drove the vehicle for a drive and it operated smoothly, just as it usually does. I have purchased an additional relay as a precautionary measure. However, I would appreciate any suggestions on the contacts and have conducted a vagcom output test on it.