The check engine light on my 91 B220 has been lit for over a year now and I can't find the cause.
I've tried disconnecting the battery and leaving it disconnected for at least 30 min. No change.
I've tried disconnecting battery and using a jumper from neg cable to ground. No change.
I've looked for disconnected hoses. Can't find anything.
The truck continues to run well (except for some hesitating when I'm just maintaining a certain speed and when it's cold but it's done that sinceI got it 6 years ago.) And I did the valves and rings about 120,000 km ago, when it had about 170,000 km.
Any ideas? David
I've tried disconnecting the battery and leaving it disconnected for at least 30 min. No change.
I've tried disconnecting battery and using a jumper from neg cable to ground. No change.
I've looked for disconnected hoses. Can't find anything.
The truck continues to run well (except for some hesitating when I'm just maintaining a certain speed and when it's cold but it's done that sinceI got it 6 years ago.) And I did the valves and rings about 120,000 km ago, when it had about 170,000 km.
Any ideas? David
