Since I have the day off tomorrow, I'm going to disassemble & clean the throttle body/upper intake plenum on my wife's '97 Expedition 4.6L with 120k miles.
The EGR passages on it are carboned up very badly, it has had DTC code P0401 forever, & I want to give the EGR passages a thorough cleaning.
What is the best product on the (retail) market to use for this? I plan to let the part soak in the solution for a few hours minimum. Then I'll take a few bore brushes to the EGR passages to get 'em nice & smooth.
The EGR passages on it are carboned up very badly, it has had DTC code P0401 forever, & I want to give the EGR passages a thorough cleaning.
What is the best product on the (retail) market to use for this? I plan to let the part soak in the solution for a few hours minimum. Then I'll take a few bore brushes to the EGR passages to get 'em nice & smooth.