by Damian007 - 3/10/07 7:31 PM
In Reply to: more.. by someonehelp!
Hi. That wire that you're touching to ground is for the Noise Suppressor if it needs one. It comes off the negative side of the coil. It can also be used to drive a Tacho or some other option. It's not really that important. I wouldn't go touching any wires to ground though, you could cause some serious damage. You ask if the coil could be the problem. It could be. For what it's worth, you could change the coil, what are they worth? 20 bucks? I, myself, reckon coils should be changed every 50,000-80,000 miles anyway. Even though they hardly ever give any trouble. Has the fuel filter been changed? Also, have you noticed if the Tacho goes dead if you're driving and it stalls? That can be a great indicator of what the problem could be. Next thing you could try, When you first turn the ignition on, You should be able to hear the fuel pump start. The fuel pump will run for a about 5sec and then shut off if the engine hasn't started. Next time the car stalls, turn the igniton off. Leave it off for about 2 minutes. Turn the ignition back on, don't start the engine, and see if you can hear the fuel pump start and then shut off. If you can't hear the fuel pump or the fuel pump is really noisy, You should probably replace it. Fuel Pumps usually fail between 65,000 and 80,000 miles. I always recommend changing fuel pumps here in Australia every 125,000kms which is about 70,000miles (I think). I know there seems to be a lot of problems with Jeeps but my opinion is they really are a very reliable vehicle. If you look at all the Forums, You usually find it's the same old components that are giving trouble. Catalyctic Convertors always fail in any vehicle, Fuel Pumps, Crank Sensors, Map Sensors, Temp Sensors and Oxygen (O2) Sensors fail in all makes of Vehicles depending on the age and mileage. Engine Management Computers are very reliable in any make of car. So, it's just a matter of diagnosing the problem correctly. Any Competent Mechanic should be able to do that. One Very Common Problem and it's a weak point on Jeeps, is the Park Neutral Switch on the transmission. This switch only controls the starter motor and Reverse Lights so it shouldn't cause the car to stall.
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