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Unread 06-20-2008, 04:42 PM   #1
Luckyduck
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Jeep does not like getting past 2300-2500 rpms

My 2.5 stutters and goes very slow trying to get past 2300-2500 rpms. After that it accelerates like normal (so extremely slowly) It does it more under heavy strain, but can be felt most times.

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1978 international scout - being built
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Unread 06-21-2008, 08:33 PM   #2
Luckyduck
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No ideas??
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If I can get there I can wheel it!

CentralMass4wd.com

1993 Ranger 2wd - dd
1999 wranger 2.5 - it gets used for something
1978 international scout - being built
1998 Cherokee sport 4.0 auto
1957 CJ5 - restoring back to stock http://www.jeepforum.com/forum/showt...54#post5168554
Bikes:2000 Ducati Monster 900: 2001 CBR 600 F4i: 1980 CB 900
my build http://www.jeepforum.com/forum/showthread.php?t=550786
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Unread 06-21-2008, 09:46 PM   #3
RnEmOvr
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check your cat. convertor, when mine went bad it did same thing,
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Unread 06-22-2008, 08:26 AM   #4
jgorm
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Does it have the same symptoms while free revving it?
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Unread 06-22-2008, 08:31 AM   #5
Luckyduck
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Location: Worcester, Mass
Posts: 2,100
It is a brand new cat and no I do not believe it does this free reving.
__________________
If I can get there I can wheel it!

CentralMass4wd.com

1993 Ranger 2wd - dd
1999 wranger 2.5 - it gets used for something
1978 international scout - being built
1998 Cherokee sport 4.0 auto
1957 CJ5 - restoring back to stock http://www.jeepforum.com/forum/showt...54#post5168554
Bikes:2000 Ducati Monster 900: 2001 CBR 600 F4i: 1980 CB 900
my build http://www.jeepforum.com/forum/showthread.php?t=550786
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Unread 06-22-2008, 08:45 AM   #6
jgorm
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It sounds like it may be a fueling problem. Have you looked at the plugs yet? This may help to see if its a calibration issue with all cylinders, or if one is worse than the others. Once you figure if its mechanical or electrical you can concentrate you efforts there. Might as well put some new plugs in while your at it. Keep track of what plug came out of what cylinder in case there is a difference in one of them.
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Unread 06-22-2008, 08:48 AM   #7
Luckyduck
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1999 TJ Wrangler 
 
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Location: Worcester, Mass
Posts: 2,100
I put new plugs in in February. I will look at the plugs again and see if there is a difference. I have tried a bunch of stuff and I am thinking cap rotor and wires are next
__________________
If I can get there I can wheel it!

CentralMass4wd.com

1993 Ranger 2wd - dd
1999 wranger 2.5 - it gets used for something
1978 international scout - being built
1998 Cherokee sport 4.0 auto
1957 CJ5 - restoring back to stock http://www.jeepforum.com/forum/showt...54#post5168554
Bikes:2000 Ducati Monster 900: 2001 CBR 600 F4i: 1980 CB 900
my build http://www.jeepforum.com/forum/showthread.php?t=550786
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