20 Most Recent 1989 Jeep Wrangler - Page 8 Questions & Answers


the ecu is under the dash between the steering column and the heater housing.
there is also another one under the rear seat.

1989 Jeep... | Answered on Feb 22, 2011


Sounds like a stuck or defective float.(perhaps a hole in it). Also check the needle valve for operation and if its installed correctly. That is connected to the float

1989 Jeep... | Answered on Feb 04, 2011


Problem is with clutch Hydraulics or clutch mechanics. Bleed clutch. If no leaks, Clutch master or
remove transmission for clutch inspection.

1989 Jeep... | Answered on Jan 27, 2011


Carburetor floats are adjusted (if needed) when the unit is rebuilt. This is not a normal maintenance item and it is unusual for a float to become misadjusted. Rebuild kits for carburetors are available from parts stores inexpensively, and complete instructions for all adjustments and clearances are included in the kits, as well as all the gaskets and replacement parts you might need.

1989 Jeep... | Answered on Jan 26, 2011


Has the coil wire been replaced? Is the rotor turning in the distributor when the engine is cranked? I'm assuming you have a 2.5 L engine.

1989 Jeep... | Answered on Jan 22, 2011


Flushing a radiator at home is most often a waste of time. The chemicals used by a radiator shop are far stronger than anything you get at the parts supply house. What happens is that the flow you see is deceptive as the water tends to flow around a partial restriction and does nothing to remove it.
Though your garden hose has a lot of pressure it doesn't have the volume necessary. A garden hose will usually be sufficient to flush out a heater core though as it's smaller.
Have a radiator shop flush your radiator core and have a hydrocarbon test done on the cooling system to eliminate the possibility of head gasket problems. When re-filling the system, turn the engine off just before it reaches 210 degrees and let it sit for a few minutes so the thermostat can open, then continue filling. Always fill with the heat on high. Thermostat goes in with the spring end into the engine.Forget about the water pump...unless you got one made for a twin engine marine (CCW) application it has nothing to do with the problem though I've heard but never actually seen that the belt can be installed so it turns backwards.
When the engine is at operating temp cover the grille and force it to nearly go into overheat...the electric fan should come on and the mechanical fan should lock up to try to counteract that.
Don't open the system when it's hot (you found that out already). And, don't allow the engine to actually overheat.
My bet without seeing it? Likely a partially obstructed radiator. 4.0 engines make a lot of rust residue even when maintained. If that's what you have in there, or even the 4cyl. It is more than likely.

1989 Jeep... | Answered on Jan 19, 2011


I would think your starter is over heating (grounding) which is draining power from batt which is making alternator use its charging capabilities to the max . starter motor is what id check. this isnt a little 14 gage wire robbing all that power so quick, it is a direct connection within the batt,starting or charging system.

1989 Jeep... | Answered on Jan 11, 2011


Open the hood, on the drivers side next to the brake master cylinder you will notice a small (1 1/2-2") black reservoir which says "CLUTCH" on the lid. Just follow the line down to the transmission.

1989 Jeep... | Answered on Dec 22, 2010


check the crank shaft sensor. if the sensor is bad the jeep won't start.

1989 Jeep... | Answered on Dec 20, 2010


These jeeps have an hydraulic system with a master cylinder up top and a hydraulic line leading down to a slave cylinder. You likely have a leak somewhere and your hydraulic fluid is gone.

1989 Jeep... | Answered on Dec 12, 2010


Have you checked to see whether the battery lamp illuminates with the key on only. If not then the fuse to is blown or that wiring to the field circuit is faulty.
Did you replace the parts with new ones?? You did not state.
No battery warning lamp no charge simple.

1989 Jeep... | Answered on Dec 06, 2010


Do you mean the O2 sensor? That's located on the exhaust just below the carb.

1989 Jeep... | Answered on Dec 03, 2010


Your parts store will sell you a carb rebuild kit for $15-25 that will have complete instructions. However, if you have questions about how to remove the carb, I'd guess that you are not ready to rebuild one.

1989 Jeep... | Answered on Dec 03, 2010


yes there is a fuse and should be marked look for it. you can also test for power at the horn this will mean the fuse is good.to do this some one will have to push the horn button for you. but remember power goes from the fuse to the horn button than to the horn, so if you have no power at the horn it could mean the horn button or clock spring depending on which your vehicle is equipped with are bad and if you have power at the horn it could be a bad ground or a bad horn good luck. please rate this answer.

1989 Jeep... | Answered on Nov 24, 2010


if it's a 2.5l it's under the coil. Held in with two screws for coil and two bolts for module

1989 Jeep... | Answered on Nov 12, 2010

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