93 xj rpm problem

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Aug 26, 2013 | 05:48 PM

ron79

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Newbie

Joined: Apr 2013

Posts: 21

Likes: 0

From: jackson ga

Year: 1990

Model: Cherokee

Engine: 96 4.0

93 xj rpm problem

93 cherokee 4.0 ho when i accelerate fast or
Floor it it breaks up real bad and also idles
Alittle rough need some advice thanks

Aug 26, 2013 | 06:36 PM

SoCalxJ4.0

CF Veteran

Joined: Jul 2012

Posts: 1,185

Likes: 5

From: Pahrump, NV

Year: 1996

Model: Cherokee

Engine: 4.0L

Quote:

Originally Posted by ron79

93 cherokee 4.0 ho when i accelerate fast or
Floor it it breaks up real bad and also idles
Alittle rough need some advice thanks

Breaks up real bad? My advice, more/better info.

But my guess? Cat, fuel, or hmmm do you have any codes??

Aug 26, 2013 | 06:56 PM

ron79

Thread Starter

Newbie

Joined: Apr 2013

Posts: 21

Likes: 0

From: jackson ga

Year: 1990

Model: Cherokee

Engine: 96 4.0

T When it breaks up it will pop out of exhaust and miss
Bad untill you let out of pedal some

Aug 26, 2013 | 06:59 PM

SoCalxJ4.0

CF Veteran

Joined: Jul 2012

Posts: 1,185

Likes: 5

From: Pahrump, NV

Year: 1996

Model: Cherokee

Engine: 4.0L

Is this happening around 3000 rpm? Is it bucking like you are hitting a limiter?

Aug 26, 2013 | 07:34 PM

Turbo X_J

CF Veteran

Joined: Sep 2009

Posts: 8,567

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From: ☼ Blackhole Sun

Year: My Jeep is a GMC

Quote:

Originally Posted by ron79

T When it breaks up it will pop out of exhaust and miss
Bad untill you let out of pedal some

What have you tried as far as diagnostics, any maintenance?

Aug 26, 2013 | 07:48 PM

ron79

Thread Starter

Newbie

Joined: Apr 2013

Posts: 21

Likes: 0

From: jackson ga

Year: 1990

Model: Cherokee

Engine: 96 4.0

Just got this saturday looks like new plugs wires and
Cap guy said he just put a used ecm in it from junkyard

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