Trying to sync the throttle bodies with a mercury stick. Have an 02 and have done everything by the book but the book does not tell you what to do with the 2 vacuum sources that come off of #1 and #4 throttle bodies. Took the ait sensor out of the airbox and layed it on the frame and dis-connected the iap sensor. Connected hoses from the mercury stick to the nipples off of the iap hoses but wtf do you do with the other 2 nipples plug them and the hoses or leave them hooked up?
Readings are very high on 1 and 2 and low on 3 and 4 like reallly low. You would think at 70 bucks for a service manual it would be a little better than what they give ya!!!!