My '91 Grand Prix, 3.1 has had an intermittent problem with the "service engine soon" light coming on on cold starts then going out about a minute or two. I was able to retrieve code #43 (knock sensor) from the computer. My Haynes repair manual does not show where this sensor is located on my car.
Any helpful advice would be appreciated
Thomas
My '91 Grand Prix, 3.1 has had an intermittent problem with the "service engine soon" light coming on on cold starts then going out about a minute or two. I was able to retrieve code #43 (knock sensor) from the computer. My Haynes repair manual does not show where this sensor is located on my car.
Any helpful advice would be appreciated
Thomas
Have something to add? Share your thoughts — no account required.
Ask the community — no account required