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post #1 of 3 Old 05-17-2013, 10:18 PM Thread Starter
TimHaw
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1992 XJ Cherokee 
 
Join Date: Jan 2012
Location: Cedar Falls
Posts: 73
rpm issue

I've been having an issue with my 98 xj.

Right away when i start driving with in the first quarter mile. I bog down and then theres a popping sound like a back fire and then important good for the rest of the drive

Replaced the spark plugs just for good measure butter it didn't help.

Any ideas?

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post #2 of 3 Old 05-18-2013, 08:21 AM
CJ7-Tim
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2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis
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Are all the tune-up parts fresh ? Have you tested the igniton coil ? Test the O2 sensors, the Throttle Position Sensor, and the Coolant Temperature Sensor.

Engine sensors have a certain lifespan and replacement of sensors and tune-up items is part your normal and routine maintenance.

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post #3 of 3 Old 06-20-2013, 11:04 PM Thread Starter
TimHaw
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1992 XJ Cherokee 
 
Join Date: Jan 2012
Location: Cedar Falls
Posts: 73
Quote:
Originally Posted by CJ7-Tim View Post
Are all the tune-up parts fresh ? Have you tested the igniton coil ? Test the O2 sensors, the Throttle Position Sensor, and the Coolant Temperature Sensor.

Engine sensors have a certain lifespan and replacement of sensors and tune-up items is part your normal and routine maintenance.
Had it checked out they said everything checked out fine
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