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Old 09-21-2015, 03:49 PM
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Old 03-16-2014, 10:12 AM
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Originally Posted by Skeeter_Leg
Extremely rough idle, no gas, and sputtering at startup. No check engine light. Oil pressure is normal. Temp is ~170. This has happened only twice since December, at random. Any ideas??? Thanks
I have absolutely no experience with this, but I'm going to take a guess and say your O2 sensor is starting to go bad, maybe? Back when we had the TJ, an oxygen sensor went bad and caused rough idle and no acceleration at random.

I could, of course, be completely wrong. So don't take my word for it.
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Old 03-16-2014, 10:16 AM
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Originally Posted by chuck1225
I have absolutely no experience with this, but I'm going to take a guess and say your O2 sensor is starting to go bad, maybe? Back when we had the TJ, an oxygen sensor went bad and caused rough idle and no acceleration at random. I could, of course, be completely wrong. So don't take my word for it.
O2 sensors are brand new. Thanks
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Old 03-16-2014, 10:21 AM
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Cleaning the throttle body could be it. I know when under the butterfly flap (as I call it) it can get gross. So some carburetor cleaner can be used. Just pull the line to flip the flap so you can see in there to determine if it's dirty. This worked for me.
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Old 03-16-2014, 10:31 AM
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I've cleaned the TB.

Also, new plugs, cleaned IAC, new MAP, new intake air temp sensor, and new TPS.
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Old 03-16-2014, 10:34 AM
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Originally Posted by Skeeter_Leg
I've cleaned the TB.

Also, new plugs, cleaned IAC, new MAP, new intake air temp sensor, and new TPS.
TPS been tested? Sensor ground is good? Plug wires, distributor cap and rotor?
Last edited by salad; 03-16-2014 at 10:39 AM.
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Old 03-16-2014, 10:40 AM
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Originally Posted by salad
TPS been tested? Sensor ground is good?
How do you test TPS?

Not sure about the ground. Do you mean the ground wire in the pigtail?
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Old 03-16-2014, 11:18 AM
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Originally Posted by Skeeter_Leg

How do you test TPS?

Not sure about the ground. Do you mean the ground wire in the pigtail?
Go to the writeups section and check Cruiser54's Mostly Renix Tips.

Exact values you should be testing for will depend on year. Chrysler models should use info that's regularly posted by tjwalker
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Old 03-16-2014, 11:28 AM
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Originally Posted by salad
Go to the writeups section and check Cruiser54's Mostly Renix Tips. Exact values you should be testing for will depend on year. Chrysler models should use info that's regularly posted by tjwalker
Thanks
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Old 03-16-2014, 11:49 AM
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Originally Posted by salad
Go to the writeups section and check Cruiser54's Mostly Renix Tips. Exact values you should be testing for will depend on year. Chrysler models should use info that's regularly posted by tjwalker
This might help. I'm not a renix.

2000 4.0 auto
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Old 03-17-2014, 06:27 AM
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Originally Posted by salad
TPS been tested? Sensor ground is good? Plug wires, distributor cap and rotor?
Sounds like the very common problem of the discharge of fuel pressure at the fuel rail. Next time it does it turn the key off and then back on, activating the fuel pump, let the fuel pressure recharge and try starting again.
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Old 03-17-2014, 06:41 AM
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I am rebuilding my jeep an need new exhaust. Previous owner welded a cherry bomb an it snapped so need totally new exhuast. Any ideas
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Old 03-17-2014, 07:28 AM
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Originally Posted by jonahdfish
I am rebuilding my jeep an need new exhaust. Previous owner welded a cherry bomb an it snapped so need totally new exhuast. Any ideas
I'm very happy with my Flowmaster Super 40. 2.5" piping.
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Old 03-17-2014, 09:42 AM
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Originally Posted by PocketsEmpty
I'm very happy with my Flowmaster Super 40. 2.5" piping.
Can you post a video of how it sounds please. I'm about to put a new exhaust complete system in mine and I'm back and forth between the 44 and 40 with the 2.5" pipe.
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Old 03-17-2014, 09:48 AM
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I have a super 44 on my xj and I like it. I can't say anything about how it sound cause I'm deaf. Lol.
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Old 03-17-2014, 10:06 AM
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Originally Posted by XJwonders
I have a super 44 on my xj and I like it. I can't say anything about how it sound cause I'm deaf. Lol.
Haha
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