Question about Jeep CJ7

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79 cj7 i6 automatic NEED HELP WITH 4x4 VACUUM HOSES

I have a vacuum switch mounted in my glovebox for my 4x4 all my hoses were removed. there is a actuator deal on the end of the transfer case with two vacuum lines. i assume each of those go to a slot on the switch but which one and where does the 3rd hose go??

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The switch in your glove box is a( pto switch ) power take of switch two hoses go the trasfer case the third hose go to the acuator box that located low on the fire wall on the passenger side.

Posted on Feb 12, 2009

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Get a diagram that can be understood to replace smog and or emmissions for a 1986 cj7 258 six manual trans


Autohauz AZ i bet has that, check youtube ususally theres a video of someone doing that exact thing

Jan 04, 2015 | 1986 Jeep CJ7

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4x4 jimmy light blinks but does not go in?


Check all your vacuum lines. The smaller vacuum hoses tend to get really soft and gummy. They will collapse when vacuum is present. Look for disconnected hoses and T-fittings. The one that causes the most problems is a large diameter hose that attaches to the vacuum actuator which controls the front differential engagement. The actuator is located underneath the battery tray. You will have to remove the battery and the battery tray to gain access to it. I would recommend that you replace all the vacuum hoses with new ones, even if the old ones seem to be ok. I am assuming the blinking light is for the 4hi and not the 4lo.

Feb 12, 2011 | 1998 GMC Jimmy

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You can hear 4x4 engage when you press 4 hi or 4 lo and light does come on the indicate but you cannot move in any amount of snow. there is no extra gripping power. its just like in 2 wheel drive. what...


i had a similar problem with mine, check to see if you are getting vacuum to the front 4x4 actuator valve under the battery tray, it looks like a big diaphragm with a cable hooked to it. the hose is tied close to the oil dipstick. if the diaphragm sucks in when you have the vehicle started and engage 4x4, then its likely front axle related. but if you get no vacuum at all then check the vacuum pump located on the transfer case. i didnt have the money to replace the vacuum pump so i made me a turn valve under the hood and ran vacuum lines to the intake. just make sure you turn the valve off after you disengage 4x4 or you will use more gas cause the front axle would stay locked in, and may cause more probs down the road. the vacuum pump on the transfer case is about 200 bucks. it cost me 10 dollars for the valves and hoses... hopes this helps.

Jan 29, 2011 | 2002 Chevrolet Blazer

1 Answer

Hi my 4x4 a.w.d does not work,98 lincoln navigator,onley the rear weel work,hi2 ,you could hear it changed ,but the front weels does not pull,the a.w.d lite does not flash,can you please help me.


If your 4x4 Hi lite comes on when switched to that, then it could be a vacuum leak on the front wheel(s). Check the vacuum hose to each wheel for cracks. With the engine running ( apply the emergency brake) turn the wheel left or right you will be able to see a small black hose connected on the back side close to and just above the drive shaft, remove the hose and check for vacuum. If the hoses are OK, then the whole locking mechanism has to be removed, there are O'rings that deteriorate and have to be replaced. It could also be the locking mechanism is froze up with dirt.Try locking unlocking them manually to free them up, do this with the engine off.

Jan 10, 2011 | Lincoln Navigator Cars & Trucks

1 Answer

Only cold air is available, what can I do to fix the blend door temporarily


I would repair the problem if I have to disassemble the varioius parts to get at the air doors --- In-Vehicle Temperature Sensor Removal & Installation To Remove:
In-vehicle temperature sensor ford-10-00-433.gif

  1. Remove the climate control head.
  2. While pressing the retaining tabs inward, remove the in-car temperature sensor.
To Install:
  1. While pressing the retaining tabs inward, install the in-car temperature sensor.
  2. Install the climate control head.
---
Air Door Actuators/Motors Removal & Installation Air Inlet Door (Recirculation) Vacuum Motor To Remove:
  1. Remove the instrument panel.
  2. Remove the air inlet door motor mounting screws. CAUTION
    Do not attempt to bend any part of the air inlet duct door lever.
  3. Rotate and remove the air inlet door vacuum control motor.
To Install:
  1. Rotate and install the air inlet door vacuum control motor.
  2. Install and tighten the mounting screws.
  3. Install the instrument panel.
Defroster Door Vacuum Motor To Remove:
  1. Remove the passenger air bag module from the instrument panel.
  2. Disconnect the vacuum line and remove the mounting screws. CAUTION
    Do not attempt to bend any part of the defroster airflow mode door lever.
  3. Rotate and remove the vacuum control motor from the defrost door lever.
To Install:
  1. Rotate and install the vacuum control motor on the defrost door lever.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum line to the vacuum control motor.
  4. Install the passenger's air bag module.
Floor Console Register Duct Vacuum Motor To Remove:
  1. Remove the floor console.
  2. Remove the right-side instrument panel insulator.
  3. Working from the passenger's footwell, disconnect the vacuum hose.
  4. Remove the screws and the floor console register duct vacuum control motor. CAUTION
    Do not attempt to bend any part of the floor console register duct door lever.
  5. Rotate and remove the vacuum control motor from the floor console register duct door.
To Install:
  1. Rotate and install the vacuum control motor onto the floor console register duct door.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum hose to the floor console register duct vacuum control motor.
  4. Install the insulator under the dash.
  5. Install the floor console.
Panel/Floor (Heater Air Damper) Door Vacuum Motor To Remove:
Panel/floor door vacuum control motor shield ford-10-00-403.gif

  1. Working through the driver footwell, remove the two screws and the shield. CAUTION
    Do not attempt to bend any part of the airflow mode door lever.
  2. Label and disconnect the two vacuum hoses.
  3. Remove the vacuum control motor mounting screws.
  4. Lift, rotate and remove the panel/floor (heater air damper) door vacuum control motor from the door lever.
To Install:
  1. Install the panel/floor (heater air damper) door vacuum control motor on the door lever.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum hoses in their original positions.
  4. Install the shield on the vacuum motor.
Temperature Blend Door Actuator To Remove:
  1. Remove the integrated control panel.
  2. Remove the right-side lower instrument panel insulator.
  3. Lower the glove compartment.
  4. If equipped with Electronic Automatic Temperature Control (EATC), remove the 2 remote climate control module screws and position the module aside.
  5. Remove the temperature blend door linkage shield.
  6. Disconnect the temperature blend door electrical connector.
  7. Remove the temperature blend door actuator mounting screws.
  8. Remove the temperature blend door actuator.
To Install:
  1. Position the temperature blend door actuator on the plenum.
  2. Install the temperature blend door actuator mounting screws.
  3. Connect the temperature blend door electrical connector.
  4. Install the temperature blend door linkage shield.
  5. If equipped with Electronic Automatic Temperature Control (EATC), reposition the remote climate control module and install the 2 mounting screws.
  6. Raise the glove compartment.
  7. Install the right-side lower instrument panel insulator.
  8. Install the integrated control panel.
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Nov 05, 2010 | 2000 Ford Taurus

1 Answer

Vacuum Hose


i think that one goes under the air filter cover look under it to see if theres a stem for a hose.

May 07, 2010 | 1996 Chevrolet S-10 Pickup

1 Answer

Most of the vacum hoses were gone or ports on carb. were plugged.Need a diagarm of were the hoses go on a 1983 Jeep CJ7 with a 258 inline six with a 2 barrel Carter carb.


Most vacuum hoses are colour coded nowaday, not sure about your one, so look carefully at the end of each hose for coloured dots or lines that should line up with the ports also

Aug 23, 2009 | Jeep CJ7 Cars & Trucks

2 Answers

1996 GMC 1500 4X4- NO HEAT- NEW THERM / NO HEAT TO "IN" LINE TO C


there is a vacuum line running to a vacuum switch on one of the hoses try taking the switch out and connecting the hoses together. Thats what turns off the hot water while the air con is on. If that works then its bad or the vacuum line going to it has a problem.

Jan 16, 2009 | GMC Sierra 1500 Cars & Trucks

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