The idle speed motor does fail but it is not common. The best thing would be if you could "borrow" a motor from another car just to test it. If that gets your car to run right then you could order another knowing that this will fix the problem. Another thing you could try is to lubricate the upper and lower pivot points inside in the hope it is just sticking and not burnt out. Even it you can get it to work this way it is not a long term repair. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "Jerry Harry" <jlharry@xxxx> wrote: > Well, My problem is not the vacuum its the idle speed motor. > Do these things have a failure history. Mine no longer hums when it should > or always did in the past and my idle no longer works at all. > When I start it up it will run if I give it some gas and keep it running > that way, if I let it drop back to idle it will just die, makes no attempt > to run. The idle switch is working and I have voltage on the motor plug but > the motor does not turn, nor have that little hum it had when all was > working. > John, Martin, David, what do I check next? Is it time for a new idle speed > motor? > Thanks for any input. > Jerry Harry > Vin# 4890 > PS: > John, your tank fix works great and was easy to install. Thanks again.