I need vacuum line schematics?

Hello,

Here is the engine vacuum line diagrams for you. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Your welcome thats what were here for glad I could help.

The lovely T-Case vacuum switch.
Two lines are vacuum, the third is connected with the T-case vent.

To determine which is what when you cannot see the switch. Connect a chunk of vacuum line to any port and blow into it. Move the line until you find the port you cannot blow through. This is the port that goes to the engine vacuum. Connect it up.
Start the engine and shift the case into four wheel drive. Now you should find one port of the two left has vacuum. That port goes to the axle actuator. The last port is the vent.

The valve works :
In two wheel drive, the incoming vacuum is blocked front axle actuator is disengaged. The actuator port and vent are connected so it cannot move on it's own and the case vent functions.

Shifting into four wheel drive the valve moves and sends vacuum to the actuator, it also blocks the vent port so there is no vacuum applied to the T-Case seals.

Shifting out of four wheel drive the valve moves down, it blocks off the vacuum feed first, then opens the actuator port to the vent line, That lets air into the actuator and it moves and unlocks the front axle.

If you can see the switch. The picture shows which lines go where based on the alignment pin on the switch.

Hi, the autozone site has vacuum diagrams and wiring diagrams for free. You have to register your vehicle, then click on repair info. Look under the, engine controls, link.

Hi Chrisjason,

Here are the diagrams that we have. Unfortunately they are drawings so they are not the best. Let me know if this doesn't help and I can dig deeper for more detail. Maybe if you can take a picture of what you are missing I can identify them and where they should go to.

Thanks

These are the vacuum diagrams for 1988 s-10 4 cyl...this ball is not for the brakes! If the brakes are acting up when you step on the pedal, test the check valve at the booster, vacuum source for brakes is from manifold...ALL doors on the heater plenum are operated by VACUUM!

Go to the autozone site, register your vehicle, it is free. Click on vehicle repair info, I believe vacuum diagrams are under the emissions link. Just find what you want. The above diagram is an example.

Hello, I am Danny.

Does this picture help? Hope this helps and thanks for using 2CarPros.
Danny-

How about all four versions with California spaghetti.
Image 1 - 1983 w/Automatic
Image 2 - 1983 w/Manual
Image 3 - 1982 w/Automatic
Image 4 - 1982 w/Manual

Think you have a bad hose or did some come off and you need to trace them?

Age and heat are not friendly to rubber lines. The code 45 was likely from the canister being full of fuel. When it runs the purge it only expects some vapor and then air, excess gas would just keep dumping vapor through it. A bad smog pump can also do it as the extra air from it will lean out the exhaust.

Timing for the stick version is the same 10 degrees in California.
If it has the electronic system unplug the four wire connector at the distributor to set the base timing. If vacuum advance pull the vacuum line and plug it to set it.