Jack, I know you have had some other answers. But as the fans get older and the brushes wear down and they don't wake up as fast together when voltage is applied, one may have back pains getting up and the other is just slow. Light comes on. A good cleaning wouldn't hurt. John Hervey www.specialTauto.com << New problem for me... When I start my D, the cooling fan goes on as soon as it starts and the fan fail light goes on. After running for a minute it goes off and every once and a while the fan fail flashes on and then off. After it is warmed up, the problem seems to go away..... Any ideas what to look for? Kind Regards, Jack 5823 >>