wild vents solved!!!!
Professional
Joined: Sep 2020
Posts: 117
Likes: 1
From: Central Texas
When it stops raining I plan to look at it again. How can I tell if the servo is bad?
Administrator
Joined: Apr 2010
Posts: 87,399
Likes: 4,214
From: Clayton MI
If it was damaged by the battery, it will be obvious. 
Otherwise.... I think it is two solenoids, and a vacuum servo.... PCM just manipulates the solenoids to hold the throttle where it needs to be.
Otherwise.... I think it is two solenoids, and a vacuum servo.... PCM just manipulates the solenoids to hold the throttle where it needs to be.
Professional
Joined: Sep 2020
Posts: 117
Likes: 1
From: Central Texas
I checked the servo and it appears to be good. The vacuum line is good and the cable to the throttle body is good. Where are the servos located and can I test their functionality?
Administrator
Joined: Apr 2010
Posts: 87,399
Likes: 4,214
From: Clayton MI
Professional
Joined: Sep 2020
Posts: 117
Likes: 1
From: Central Texas
I just downloaded the shop manual for my truck and discovered there is a vacuum reservoir under the cowell grill. I plan to look at that after the sun comes out and it warms up a bit, this texas boy gets cold easy.
Legend
Joined: Nov 2014
Posts: 8,098
Likes: 318
Only if your brake lights are on. You sure it's not the switches or a vacuum leak?