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Old 06-13-2013, 01:43 AM   #1
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1995 yj hard start, high idle, and cuts out

can anyone help? i have a 1995 YJ and it sat for about a year.. i just got done changing out the freeze plugs and it started having a hard time starting. i put new gas and fuel booster in the tank that didnt help.. i changed the fuel filter and pump and that didnt fix it either. it has 140,000 miles on it. i dont know where to go from here? could the O2 sensor be causing it? the coolant might have dripped down on to it from the freeze plugs leaking. it will crank over a bunch and sometimes start. when it starts it runs rough until it catches it self and revs up to about 2500 rpm and stays there. then when i drive it it will cut out bad under acceleration and feels like its missing. but when the rpms get higher up its seems fine when i lets off the gas it wont idle down it stays between 2000 and 2500 rpms

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Old 06-13-2013, 08:56 AM   #2
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Im going to say either bad battery cables, bad connections at the battery, bad connections at the starter or possibly a bad battery itself. Thats the kind of crap they'll do when they don't get a solid voltage to the fuel injectors. Also check your grounds.


Or, distributor cap and rotor & spark plugs. They're cheap... start there.

I'll bet if you go through all your connections something is loose. If not, start w/the parts designed to fail like cap & rotor.

Or, IF it only does it when wet, its the coil.

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Old 06-14-2013, 12:11 AM   #3
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i replaced the battery about a month ago. i changed out the coil and spark plugs today. when i changed the coil it really didnt help much.. but with the spark plugs it helped my problem with starting.. now the jeep starts right up but still idles very high and still feels like its going to fall on its face when im accelerating.. everytime ive changed someting fuel pump fuel filter ignition coil it seems like it gets a tiny bit better. but noting drastically has made it better.. i checked the ground and it seems fine, the cap and rotor arent very old
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