Vacuum actuator switch

	Blazer Forum Classifieds Photo Gallery Search Contact BF Sponsors
Blazer News Member List Forum FAQ Timeslips Recalls TSBs Calendars Register Login

Vacuum actuator switch

Printable Version

Blazer >> Mechanical & Maintenance >> Steering, Suspension & Drivetrain >> Vacuum actuator switch

Page: [1]

Message

<< Older Topic Newer Topic >>

Vacuum actuator switch - 8/25/2008 2:16:49 PM

watsonracingteam

Posts: 5
Joined: 12/19/2007
Status: offline

Can someone describe how this thing works or point me in the direction of a post that does?

I have been in 2WD for about 2 years. I had some grinding on start up until it built up some vacuum.

What was in or out up or down before I built up pressure and after I built up pressure???

Was I locked up in some way to effect ride and MPG?

Brian

Post #: 1

RE: Vacuum actuator switch - 8/25/2008 2:48:32 PM

swartlkk

Posts: 14313
Joined: 5/1/2005
From: Waterloo, NY
Status: online

The switch on the transfer case is likely bad. The switch is activated by the transfer case when it shifts into a 4wd mode and directs vacuum pressure to the front axle actuator under the battery tray. If you have vacuum at the actuator all of the time, the front axle is active and will cause your mileage to suffer as well as possibly some binding while turning.

_____________________________

Kyle-