Please Help!

[Cribbetr]

My son has a 1995 jeep wrangler that hesitates during excelleration. I mean all the time it's so bad it can't be driven. Here is what he has done to try to fix the problem. Replaced the fuel filter,o2 sensor,fuel pump, muffler but not the catilitic converter and cleaned the throttle body. Of course his off at collage and left me to pick up the pieces (as usual ).

[frankensteinxj]

My son has a 1995 jeep wrangler that hesitates during excelleration. I mean all the time it's so bad it can't be driven. Here is what he has done to try to fix the problem. Replaced the fuel filter,o2 sensor,fuel pump, muffler but not the catilitic converter and cleaned the throttle body. Of course his off at collage and left me to pick up the pieces (as usua).

did you try a tune up?
Fixed my xj and Honda.

[NKYJEEPSTER]

what kind of spark plugs are in it?? Is it a 6cylinder? Certain brands of spark plugs can make the wrangler 4.0 run very bad. Sounds dumb but it happened to friends jeep, took it to the dealer and they changed out his plugs and put the right ones in.

[tjrider]

X2 on the plugs. My 4.0 would not run those "awesome" $6 a piece E3 spark plugs. They don't like 2 prong plugs. Try sea foaming it. That usually clears up stuff

[sarge]

My converter plugged up on one of mine and it would idle great but would not excelerate with out falling on it's face.

[Coppertop]

Check the spark plugs.

Nick

[Bigboyky]

what kind of spark plugs are in it?? Is it a 6cylinder? Certain brands of spark plugs can make the wrangler 4.0 run very bad. Sounds dumb but it happened to friends jeep, took it to the dealer and they changed out his plugs and put the right ones in.

I'm the friend... I had Platnium plugs in mine and it would backfire, spit, sputter unless you really got into it. Pedal on the floor it would run like a champ. I exhausted everything I knew and took it to the dealer... Thought oh boy here we go when they told me use the cheapest plugs you can find. Total bill was under 100.

[tjrider]

Autolites are the best plug for any jeep motor. Add some wires, cap,and rotor. And you should be gold. If not, chop the converter off too

[Cribbetr]

The plugs wires and rotor cap were changed too.

[Cribbetr]

My converter plugged up on one of mine and it would idle great but would not excelerate with out falling on it's face.

How did you come up with that conclusion ?

[tjrider]

My wifes Zj converter collapsed too. After about 100000 or so miles they break down. Cut the pipe behind/in front of it and look in it. If its not bad just weld the pipe back

[Coppertop]

I've seen the material inside the convertor break apart and clog the pipe causing the engine to loose power and not run at all.

Nick

[gothodgie]

I've seen the material inside the convertor break apart and clog the pipe causing the engine to loose power and not run at all.

Nick

x2... i've seen it happen on other vehcles too, not just jeeps...

[cheapthrills49]

Buy a toyota