Bare with me, I do not know anything about cars and am at the mercy of mechanics - my story, vehicle broke down on highway - I heard a big clunk in the middle of the van and then it seemed like no gas to vehicle - had power but it died, had it towed to mechanics and had the fuel pump replaced on my 2001 GMC Safari $550, after I picked up the vehicle that day it was idling high, I basically sit and steer and do not need to touch the gas pedal the vehicle builds speed upto 50/60 kilometers/hour.
The vehicle had a recall so I brought it to the the GM dealer for the recall work two days after fuel pump was installed and asked them to look at the idle while they were doing the recall - they asked if work had been done recently as the there was a problem with the throttle screw order notes states: Scan Data - output test 1AC idle spped, IAC O.K., DATA IAC Counts 0 TPS VOLTS .78, High, throttle stop screw adjusted too high, screw is seized, will not adjust. dealer advised screw would definately break it he tried to adjust and I would be looking at more $$$ and to bring it back to mechanic.
so I brought back to mechanic the next day and asked he correct work he had done and not to do any other work...he called later that day and advised dealer wrong, it was a sensor and not throttle stop screw as they are not adjustable and come from the factory like that -they are not adjustable he has given me a new bill $266. $170 labour $62 parts his computer scan indicates idle too high, coolant temp sensor registere -40 degrees F when engine at 190 degrees F operating temp. replace defective coolant temp sensor & replace broken cracked vacuum line
picked up vehicle and drove it a mile - still doing the same thing
any one have any thoughts? sorry for the length but I didn;t want to leave anything out. I don?t feel I know enough about cars to argue with mechanic but the vehicle did not do this before fuel pump installed he denies that his work has anything to do with this
any help would be greatly appreciated
thanks Sandi