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backfire/runningproblems

Old Sep 4, 2013 | 10:09 AM
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Default backfire/runningproblems

i have a 98 cherokee, identified the problem as being a fuel,air mixture being off.

the sensor on the throttle body has been replaced.

it only has this problem maybe 5% of the time when im driving it will loose all power and start backfiring.

after the sensor was replaced for about a min my jeep ran better and had lots more power, before it started backfiring again? suggestions? no catalytic converter either.

Last edited by kramer_212; Sep 4, 2013 at 10:14 AM.
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Old Sep 4, 2013 | 10:10 AM
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started a few weeks ago, and has progressivly gotten worse, dosn't seem to be the fuel pum holds around 40 with the guage, and if it sits long enough it only drops to 20, but like i said it only has backfire/power problems randomly.
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Old Sep 4, 2013 | 12:52 PM
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nobody?
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Old Sep 4, 2013 | 04:59 PM
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Originally Posted by kramer_212
i have a 98 cherokee, identified the problem as being a fuel,air mixture being off.

the sensor on the throttle body has been replaced.

it only has this problem maybe 5% of the time when im driving it will loose all power and start backfiring.

after the sensor was replaced for about a min my jeep ran better and had lots more power, before it started backfiring again? suggestions? no catalytic converter either.
Which sensor was replaced? Any check engine light/codes?
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Old Sep 4, 2013 | 10:51 PM
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Originally Posted by kramer_212
the fuel pum holds around 40 with the guage,
Spec is 49#, plus/minus a few. What is "around 40"? 42? 38?
Agreed on the codes and telling us what sensor you replaced.
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Old Sep 6, 2013 | 11:00 AM
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no check engine light, no codes, ended up being the front 02 censor.
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