Are you loosing coolant? Check the thermostat is working and the cooling fan is coming on, also get the radiator cleaned as you may have a blocked core, get the temp under control first then we can look at the throttle problem.
June, 5, 2012 AT 10:55 AM
Hey. It can be water pump(less likely, but easy to check). Go to a service shop and check: Oil ways, oil pump, block of the engine(most likely problem)
July, 4, 2012 AT 9:58 PM
Whatever it is, do not go to Automobile Repairing and Service/ (616) 363-9551 in Grand Rapids, MI!