I have a 94 deville, it will shut off as soon as you leave off the gas. The onboard dianostic codes are PO26,PO30,PO52,PO98,and IO52. My ? is PO26 is a shorted throttle signal switch,could this be my troubles?And if so where would it be located. Thank you for any help!!!!!!

I now jave the same problem after having my engine washed a few days ago. Anyone have any ideas on replacement cost and/or repairs necessary to fix the problem?

the throttle off odle switch is part of the stepper motor. located on the t-b bracket