Question about 1992 Jeep Wrangler
The terms "turning over" and starting are often confused... Cranking (turning over) is when the starter turns the engine, regardless of the end result. Starting is when the engine actually runs (even if for a moment).
If your problem is that the engine is turning when the starter is engaged, but not starting, then you have either a fuel or spark fault.
If the engine is not turning, check that the battery has a full charge, and holds adequate power when loaded, that proper voltage is reaching the starter and there is a good engine ground. Power should also be present at the small trigger wire on the starter when ign key is turned to start position.After checking these things you can begin to make a decision on what needs attention and proceed from there.
Posted on Feb 28, 2009
SOURCE: 95 Jeep Wrangler wont start
Listen, You need a new computer. Those are your relays clicking. There is no signal from the relays going to your computer to tell the Jeep to turn on. Cause your computer is broke. Check online for the best price. I bought mine from autozone.
Posted on Oct 24, 2008
SOURCE: 92 Jeep Wrangler MAP sensor bad?
This may not be your MAP but your Catlettic Converter. I also own a 92 Wrangler and had some of the same issues. My issue was actually a couple of things but they all came from a crack in my exhaust headder.
You may want to check your exhaust headder for cracks. If there is even a small one, (which are VERY common w/ YJ's) than your O2 sensor is thinking that the engine is running too lean. Therefor telling the fuel pump and injectors to dump more fuel into the engine. Well, truth is your not running too lean, in fact, you begin running too ritch.
The unburned fuel that is now comming out through your exhaust collects on the porslen screen inside your catalettic converter where it burns off, causing the screen to melt together. Resulting in a clogged cat.
The only way to fix this is to replace the ehaust headder (welding the crack will not work) and replacing the cat. This would explane your loss in gas mileage and power, due to over back pressure. The ticking sounds like the back pressure working on your valves.
Hopefully I'm wrong and this is not your issue because it is a very expencive repare. You're looking at around 350.00 to 500.00 just for a good headder and atleast 250.00 for the cat. However, an easy way to test this is to take a flash light and have a good look at your headder anywhere there are joints where pipes come together. Look for black, ashy spots above and around the joint. If you see this anywhere then I hate to tell you but this mite just be your problem.
Posted on Mar 18, 2009
I had the same prblm with my 1989 Jeep, 6 cyl straight, and it was because of the EGR valve, easy to replace and not too costly. EGR valve is screwed on the motor, driver side, and there is a ±1/2" rubber hose attached. Easy to see if device comes apart, cut by rust.
Posted on Mar 18, 2009
The auto shutdown relay in your vehicle is controlled by the computer. If the computer does not see a signal from the crank or cam sensor, it will turn off power to the relay which in turn shuts off power to the fuel and ignition system. Unlike those in many passenger vehicles, it's not connected to an impact sensor. (as jeeps are off road vehicles as well as being transportation, if they had an impact sensor, they would be prone to shutdown when traveling over rough off road terrain)
The fuses to the relay are affected by shorting or overload of any components they serve, or by a problem with the relay itself.
Posted on Nov 01, 2009
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