Just over the last few days my mark4 Astra Coupe 1.8 Bertone has devleoped little niggle.
An engine light comes on (on the revometer) for a couple of seconds when driving,, but now it comes on for longer periods. Sometimes I feel a very slight judder and power lose, but this is only for a milisecond then everthing is fine. I've been driving my car for a week like this.
I have been installing a lot of AV equipment inside and have grounded one of my units to the grounding point by the passenger door. The ground point had 2 original ground wires, it couldn't be because I did this could it? It did start occuring after I did this.
My manual says it's exhaust emissions problem. My Astra is still under warranty, but I want to know you guys think the problem is? Am I damaging my car by still driving it? The performance is fine other than the occasion mini-judder.
Any help will be greatly appreciated!