On again off again...... - United Bimmer Community

**Timboy** · 11-28-2005, 02:12 AM

Service Engine Light...... Comes on for a few days then goes off, then comes back on a few days later, then off again..... Could this be air getting into the fuel system, i.e. gas cap leaking???

Any advice

**c1apton** · 11-28-2005, 07:36 AM

You're going to have to be more specific. Start noting things like when it happens most - when turning, cold or hot, accelerating, braking etc... Try to narrow down what triggers it. Something as simple as an O2 sensor wire loose could trigger it. Like to help you out but need more info.

**komodo** · 11-28-2005, 10:12 AM

Quote:

Originally Posted by Timboy

Service Engine Light...... Comes on for a few days then goes off, then comes back on a few days later, then off again..... Could this be air getting into the fuel system, i.e. gas cap leaking???

Any advice

Which car is it on? I'd recommend stopping by AutoZone one day when it's on, and having your codes read (what's causing the light) for free. If you give us the code it reads, we'll be able to help you from there.

And welcome to United Bimmer.

**Timboy** · 11-28-2005, 12:31 PM

Thanks for the info......

**Timboy** · 11-28-2005, 12:32 PM

its on my 330ci and there does'nt seem to be any triggers....its a very random thing.