Vacume line diagram

images for 96 Lumina 3.1 liter Vacuum Line

big vacum to brake booster
all the little vacums can be jumped together and they make there way on the throttle body

There re few direct links showing exact vacuum line diagrams.I suggest you to refer the direct links.

Click the link below:-----
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How to locate the vacuum leak? http://howtobyme.blogspot.in/2012/01/how-to-locate-vacuum-leak.html

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Vacuum Hose Routing Diagram For 1995 Chevrolet Corvette Throttle Body?

http://schematicsdiagram.blogspot.com/2011/12/vacuum-hose-routing-diagram-for-1995.html

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VACUUM DIAGRAMS For Audi A4?

http://repairhelpcenter.blogspot.com/2011/11/vacuum-diagrams-for-audi-a4.html

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VACUUM DIAGRAMS For VW Passat? http://vwrepairhelp.blogspot.com/2011/11/vacuum-diagrams-for-vw-passt.html
------------- Vacuum line diagram For 1996 Chevrolet Lumina? http://schematicsdiagram.blogspot.com/2011/12/vacuum-line-diagram-for-1996-chevrolet.html
-------------- Vacuum Hose Routing Diagram For 1995 Chevrolet Corvette Throttle Body? http://schematicsdiagram.blogspot.com/2011/12/vacuum-hose-routing-diagram-for-1995.html
------------- Vacuum diagram for Isuzu? http://technoanswers.blogspot.com/2012/01/vacuum-diagram-for-isuzu.html


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Ford 4 wheel drive vacuum solenoid working system? http://technoanswers.blogspot.in/2012/02/ford-4-wheel-drive-vacuum-solenoid.html

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These will help.
Thanks.

Have you looked around the engine compartment? Many vehicles have a sticker with the vacuum diagram on it somewhere there (usually on top of the radiator mounting frame, but sometimes on a fender well).

IF this is a case that the IWEs will not disengage, it could be the IWE solenoid or the vacuum lines to the IWEs. Could also be a problem with the vent lines from the IWE ( the other vacuum line that runs up into the engine compartment, and just hangs there ).

This is the block diagram of the vacuum lines for the IWE ( not actual routing ). You can use a vacuum pump / gauge to see if the lines will hold vacuum. Don't be surprised if the vacuum lines test OK, there is a TSB on the IWE solenoid where it could ingest water, and allow water in the lines, which will not keep the IWE gears disengaged.

Block diagram of the IWE system


TSB on the IWE solenoid ( right click save as )
http://my.voyager.net/~sscully/file_tsb06_08_15.pdf

You didn't post your enigine size so please choose the appropriate one:



3.0L engine




3.3L and 3.8L engines

Also, I have the more detailed diagram for the vacuum routing but it is a pdf. file. We can't post pdf. files here. If you post your email address I can it mail it to you at no charge.

Use a industrial vacume tester, check each port coming off of the manifold, run your lines.

GMC S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual
VACUUM DIAGRAMS (See Figures 1 through 85)

Below is a listing of vacuum diagrams for most of the engine and emissions package combinations covered by this manual. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the car's original equipment, refer to the diagrams below for the same or similar configuration.
Check the link autozone.com (free register), select the year ('91 sample), Brand, Model, Sub-Model, Engine Size and make the next root...
1991 GMC TRUCK S15 4WD 4.3L TBI 6CYL REPAIR GUIDE >> EMISSION CONTROLS >> VACUUM DIAGRAMS

I really hope helps with this (remember rated this help). Good luck.

open the hood and see if there is a diagram for vacuum lines on the front rail above the radiator. or under the hood itself.

looking for vacume diagram under the dashboard for heater and air conditioning controls ...for a 1983 280zx ...having a problem with the floor door actuator and defroster...not getting vacume to the floor door actuator