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I have 1989 4x4 with z motor i need vacuum diagram it has only 4 port connections on side of air breather

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: need vacuum diagram for 4-wheel drive

the 4x4 don't use vacuum. the front is auto lock when the transfer is engauged with the button. if the light don't which when pressed into 4hi or 4low. the motor on the transfer case maybe hung up. they have to be used at least 4 times a year not to go bad. the motor is on the back side of the transfer case. best of luck.

Posted on Aug 07, 2009

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morse008
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SOURCE: i need a vacuum diagram for a 96 Rodeo with a 4

i would suggest your local library for a Chilton Manuel on the subject

Posted on Sep 07, 2009

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SOURCE: vacuum diagram for 1980 cj7 jeep 2.5 motor

You can use any vacuum port on the manifold for that. If you want to mess with it a bit, if you have an open port on the carb that is above the throttle plate, you can use that and see if performance is better. Some engines like it and some don't, but it's not like you have to take the engine apart to try it!!

Posted on Oct 08, 2009

Molson02536
  • 3854 Answers

SOURCE: i need a connection diagram for a chev blazer

The Vacuum line to the 4wd actuator from under the battery try runs along the passenger side frame to the vacuum harness that is connected to the vacuum switch on top of the transfer case, driver's side.
The 4wd vacuum switch on top of the transfer case (driver's side) will have three vacuum line, one to the actuator under the battery try, one to vent out the vacuum, and the vacuum line it self which runs up towards the firewall making it's way to the vacuum canister on the drivers fender by the brake booster.
Hope this helps your and thank you for using fixya. http://i11.photobucket.com/albums/a187/swartlkk/general%20automotive/94_vac_overall.gif http://i11.photobucket.com/albums/a187/swartlkk/general%20automotive/94_4wd1.gif

Posted on Apr 18, 2010

Testimonial: "The best explanation I could find for the vacuum system operating the 4wd on my Blazer"

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SOURCE: Chevy 4.3 v6 edelbrock performer carb and hei

Not sure which design carb you have but here's a rule that works for all carbs. Attach the vacuum advance hose to any port coming from the carb baseplate (bottom). If you don't have a free one, you can use a "T" in another line or if there's a fitting on the manifold you could use that as well. Just make sure that the line has full vacuum at idle. (check with a vacuum gauge or just put your finger over it and feel for vacuum) Since it's pretty old, it would be good to put your finger under the advance mechanism when you attach the line (running) and make sure the small rod that goes into the distributor moves when you do that. if it does not, then the advance diaphragm is bad and you will need to replace it. Use small rubber plugs to block off any unused ports.
As for the fuel line. You should have a threaded inlet on the fuel bowl. The line attaches there. If you need to make a line, you can get one from any parts house, cut it to length and use rubber fuel hose to join it together with the one already on the fuel pump. When running new line, keep it away from exhaust manifolds, belts and pulleys. Best to put an in-line filter in the hose....that will keep the carb clean. If it's a four barrel (doubtful for that engine) you would need a fuel rail that joins both carb inlets to the single line from the pump.
If you have a problem understanding this, just ask and I'll clarify it for you.

Posted on Jul 12, 2011

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Big breather from valve cover to air cleaner, the small vac line runs from there to the FPR.



These next are standing in front of the car:

Intake manifold lower outer runs to EZL

Intake manifold lower inner (right side) goes to switchover vac valve on driver fender. The other side of this vac valve goes to the throttle body

Intake manifold lower inner (left side) goes to switchover vac valves on passenger side fender. These then go back to the EGR valve once making a loop under the distributor cap for whatever reason.

Intake manifold rear runs to a 'three' way valve (or 'Y' connector) on the secondary firewall. This is usually a vac leak.

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I have a 1987 s10. I need to figure out where the three vacuum line coming out of the transmission are supose to go. I bought the truck with just the vacuum lines hanging from underneith the truck.My 4...


The three lines hanging under the truck connect to a valve on top of the 4x4 transfer case, this is why the 4wd does not work. As for the throttle body lines there should be a diagram on the radiator support that explains that. You should have one large line that goes to the PCV valve, a small line going to the air cleaner, a small line connected to the MAP sensor and possibly another connected to a valve that controls the EGR valve. Your fifth line should connect to a port on the manifold that supplies vacuum to a tank that is the vacuum source for the HVAC control doors and the front axle engagement system. The axle engagement system is what the line hanging by the transmission under the truck is for.

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2002 dodge Dakota stuck I'n 4 wheel drive so u


The 4x4 is controlled by vacuum. There is a vacuum switch on the top of your transfer case that control the vacuum to the front axle shift motor. The shift motor has 2 ports, when vacuum is applied to one side the shift motor moves the fork one way and when vacuum is applied to the other side, the fork moves the other way.

The first thing I would do is verify the hoses at the transmission cross member are hooked up. Then I would remove the 4 bolts from the shift motor and remove the motor and start the engine and shift in and out of 4x4 waiting 10 seconds before each shift and see if the fork moves.

If it doesn't you will need to check the vacuum connector on top of the transfer case and make sure it is fully attached, if it is, you will need to remove the vacuum connector and check to see if you have engine vacuum on one port(around 15" vacuum). The ports are as follows - one port goes to engine vacuum, one port goes to a vent and the other two go to your shift motor. The hoses that go to the shift motor are bad for getting plugged, so you should use compressed air and see if they are clear.

If everything checks out, you will have to remove the switch on the transfer case and operate it by hand while the engine is running and see if the plunger moves in and out. Sometimes the plungers will stick in!

A vacuum gauge and pump are needed to check the motor and switch. If you don't have one, you might need to borrow one and put a vacuum on the shift motor and see if it holds vacuum. Once you put a vacuum on the shift motor the fork should move and then should pump down and hold a vacuum, if it doesn't hold vacuum, you will need a shift motor.

This is alot of info, but there are many possibilities for this not working and you will have to check all these things to diagnose this.

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I recently took apart the climate control module on my 1985 Winnebago motor home (GMC chasis & drive train). I determined that the reason I was not getting heat or A/C was because the vacuum tubes...


The exact connection of vacuum tubes in 1985 Winnebago motor home 
The vacuum lines attach to the pushbutton assy. through a molded rubber thing that has probably disintegrated and the vacuum lines are lying loose. Here's how to reconnect them.
Notice a group of seven nipples. This is where the vacuum lines attach. I numbered the nipples in the text drawing below. NOTE: This is the layout as viewed from the front of the coach. Use pieces of rubber tubing to take the place of the old molded thingy and connect the lines to the numbered nipples as described below.

1 2 3 4
o o o o
o o o
5 6 7

Plug up nipples 1, 2, and 5.You can use  small nails that fit snugly into the holes.
Connect the black line (vacuum source) to nipple 6.
Connect the white line (rearward-pointing outlets) to nipple 4.
Connect the red line (downward-pointing outlets) to nipple 7.
Connect the blue line (heater) to nipple 3.
Check out.Thanks.
Thanks. keep updated for any more query.you can rate this solution and show your appreciation.

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it seems like perhaps a coil pack did not get hooked back up or the plugs were the wrong ones. the plug that go into these motors are either ngk or nd. good motors. cheers

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The emissions sticker does not show this hose.
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Need vacuum diagram for 4-wheel drive


the 4x4 don't use vacuum. the front is auto lock when the transfer is engauged with the button. if the light don't which when pressed into 4hi or 4low. the motor on the transfer case maybe hung up. they have to be used at least 4 times a year not to go bad. the motor is on the back side of the transfer case. best of luck.

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