View Single Post
Old 08-28-2013   #7
RICHARD TILL
 
Join Date: Aug 2005
Location: Iuka, Mississippi 38852
Posts: 756
Default Re: How to vacuum test secondary throttle actuator system

i checked my actuators by hooking a 6 foot vacuum hose to the vacuum pump on the car. i hooked an alternate power source to the pump and then pinched the line off until i could get it hooked to each of them. the pump ran for a second and then stopped. thats when i waited about 15 minutes to see if the pump restarted. it didn`t so i assumed i didn`t have a leakdown. there are two vacuum lines hooked to the secondary port throttle solenoid. they both unplug together. i took a small piece of copper tubing and stuck it in the hose from the pump. i stuck that line into the vacuum line going to the actuators. another 15 minute test and it passed. no leakdown and worked smoothly. my problem was vacuum leaking thru the solenoid. it can be tested by applying 5-6 volts.
RICHARD TILL is offline   Reply With Quote