Just recently, I have noticed my engine is running on after the key is off. It has grown, now to a length of about 45 seconds until it stops. What can be causing this, is it serious and will a good 75 to 80 mph on the highway for 600 miles help? Be back Tuesday.

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Bob Morrison
92 300D 2.5 -197000 Miles
87 300D-170000 Miles The Californian
87 Volvo240DL-200000+MilesGrandson's Now