Question about 1989 Jeep Wrangler

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1989 jeep 4.2 engine vacuum hoses

There are many vacuum hoses that are either plug off or just hanging with no place to connect to.

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  • Anonymous Dec 07, 2008

    I have the same issue on my 89 Sahara. Does the 1989 objective still hold true. The repair manual describes some of the vaccuum components as delays. Does anyone have a performance explanation for all these vaccuum components and lines?



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  • 193 Answers

I can't tell you were to get one, except at a dealer, but what you need is a vacumn diagram. They are similar to an wiring diagram.
Bill

Posted on Nov 26, 2008

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1 Answer

1981 Laredo. Where can I get a vacuum line routing and connection diagram?


very very old post
ok i figured your old post out.
you posted a 1981 SJ jeep to jeep grand cherokee section.
this is the early Cherokee and is not grand. 1995+
with no engine stated, wow)
ill not try to guess the engine.
here they are...
258 cu in (4.2 L) AMC I6
360 cu in (5.9 L) AMC V8 2-barrel
360 cu in (5.9 L) AMC V8 4-barrel
401 cu in (6.6 L) AMC V8 4-barrel

made in USA or Australia, ill guess USA

the vacuum setups vary by carb used
and if FED usa or Calif USA setups
fed was called 49 state back when...
and there is the high altitude versions.
and std or HD cooling versions (huge list of vacuum setups, if you want look in alldata.com and behold.
omg one more the Canada version.... (ill skip export versions)
calif versions are huge complex....

so ill guess the 360 2 barrel,

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Jul 08, 2014 | Jeep Grand Cherokee Cars & Trucks

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89 comanche 4.0 vacuum line disconnected near passenger headlight - no cruise control


You should have a vacuum line diagram under the hood of your car you can buy the haynes repair book for your vehicle at any autozone or advance auto someplace like that

Mar 26, 2013 | 1989 Jeep Comanche

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Hi i need a vacuum hose diagram for nissan pathfinder 89 model thanks


http://www.autozone.com/autozone/repairguides/Nissan-Pick-ups-and-Pathfinder-1989-1995/ELECTRONIC-ENGINE-CONTROLS/Engine-Co

Feb 24, 2013 | 1989 Nissan Pathfinder

2 Answers

Firing order of a 1985 jeep pioneer 2.8L v6


The firing order for the Jeep 2.8l engine is:1-2-3-4-5-6
and the locations are:
on the drivers side front to rear 2-4-6
passenger side front to rear is 1-3-5
If you look straight back from the water pump to the distributor splitting the capcylinder #1 is the first one to the left.

Feb 02, 2012 | 1989 Jeep Cherokee

1 Answer

1989 jeep wrangler starts jumping and backfiring


Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???

Jan 17, 2010 | 1989 Jeep Wrangler

1 Answer

Timing on a 1990 Wrangler with a 4.2 liter


4.2L 6-Cylinder

1. Set parking brake. Shift automatic transmission to Park or manual transmission to Neutral. With A/C off, start engine and attain normal operating temperature.

2. With ignition OFF, connect an ignition timing light and a calibrated, expanded-scale tachometer.

3. Disconnect 4 " and 10 " Hg (CEC System) vacuum switch assembly wire connector (located at top of valve cover). Disconnect and plug distributor vacuum advance hose.

4. Start engine, increase engine speed to 1600 RPM and check ignition timing. Adjust timing to specification listed on Emission Control Information label (if necessary). Tighten distributor hold-down clamp and recheck ignition timing.

5. Turn engine off and remove timing light and tachometer. Connect No. 1 spark plug lead, if disconnected. Unplug and connect distributor vacuum advance hose. Connect vacuum switch assembly wire connector.

NOTE: If timing light has an adjustable advance control feature, turn control to OFF position.

Timing is set per the emissions tag under hood.

Jan 16, 2010 | 1990 Jeep Wrangler

1 Answer

Jeep wont hardley idle ..when speed gets up to about 30mi. it runs great. about six months we replaced distributor, s.p.wires, s.plugs, fuel filter, fuel pump, air filter, some vacuum hoses. been fine...


Sounds like a possibility of a vacuum leak. Inspect the vacuum tubing for damage or wear or just not being connected. One mechanic's trick is to spray carburetor cleaner on the vacuum lines with the engine running. Use safety goggles when trying this. If there is a vacuum leak - when the carb cleaner hits it the engine will speed up.

Dec 11, 2009 | 1989 Jeep Wrangler

1 Answer

Engine stalls occasionally even with new ignition system


The powdery black substance tells me that your egr valve is not working.And that is operated by the vacum sysem.The pipe has probebly come of the EGR valve.

Jul 17, 2009 | 1989 Jeep Wrangler

1 Answer

4 wheel drive enguage problem 89 Jeep


This system is run off a vacuum line get under the jeep its on the passenger side a hose runs into the axle housing make sure that it is plugged into the connector.

Jan 28, 2009 | 1989 Jeep Wrangler

1 Answer

Hose connection location


If you look under there you should find a steel or plastic line that runs up to a place inside the engine bay.( If it is connected directly to the differential) If it is connected to a box mounted on the right side axle it is part lof your 4x4control and should carry vacuum. With engine running you will hear vacuum leak and easily find connection point.
(but you didn't mention any driveline problem so it's likely the first, which is only a vent line. as long as it is not pointing foreward or straight up it is also ok to just secure it out of the way. (but not where it will become submerged in water etc.

Jan 23, 2009 | 1995 Jeep Grand Cherokee

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