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  #1  
Old October 9th, 2019, 06:33
Yahooty Yahooty is offline
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98 XJ stalls need help diagnosing

I have a 98 XJ with a 4.0, automatic trans and about 170K miles. Several times now the rig has sputtered to a stop while driving. I can put it in neutral and it may keep running, but the rpms drop way down. If I feather the gas pedal the rpms will go up and down a little.

It almost seems like it it not getting fuel. I'm also thinking it could be the catalytic converter maybe too, but seriously, I'm no mechanic.

I nursed it home last night with lots of sputtering, etc. Any ideas?? I'm sorry, but I won't be able to answer right away.

Thanks
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Old October 9th, 2019, 07:10
Heavyopp Heavyopp is offline
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Re: 98 XJ stalls need help diagnosing

Gotta check your fuel pressure — sounds like a fuel pump giving up
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Old October 9th, 2019, 10:08
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Tim_MN Tim_MN is offline
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Re: 98 XJ stalls need help diagnosing

You should start your diagnostics by checking for any saved or pending Check Engine Light trouble codes.

The symptoms should make you suspect the fuel pressure, the Crankshaft Position Sensor, the Idle Air Controller, and the battery. Test each of these, and also visually inspect the wire connections and wires for each. The Cat Converter has a service life of about 150,000 miles, if you suspect it is old, or failing, you should consider replacing it.
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Old October 9th, 2019, 17:43
Yahooty Yahooty is offline
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Re: 98 XJ stalls need help diagnosing

Good advise. I'll check that stuff out.
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