1994 Cadillac Concours Repair Question
Topics covered: Engine, Body, Check engine light.
Mileage: No information provided.
Mileage: No information provided.
Asked on April 21, 2009
Cadillac Concours Engine Problem
Engine Performance problem
1994 Cadillac Concours V8 Front Wheel Drive Automatic 120000 miles
Why does my car idle run high, then low? It is also difficult to start and then cuts off & dies. Sometimes it can run very smooth for a minute, then it starts with the idle problem & everything else? (has new plugs & fuel filter)
1994 Cadillac Concours V8 Front Wheel Drive Automatic 120000 miles
Why does my car idle run high, then low? It is also difficult to start and then cuts off & dies. Sometimes it can run very smooth for a minute, then it starts with the idle problem & everything else? (has new plugs & fuel filter)
Answer
Replied on April 21, 2009
You could have a failing idle speed control motor, dirty/sticking throttle body, faulty ecm, or wiring issues. Is there any check engine light, or messages displayed on the info center?