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  #13  
Old 03-16-2015, 01:55 PM
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Fuse good wires look good

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  #14  
Old 03-16-2015, 01:57 PM
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No scanner!
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  #15  
Old 03-16-2015, 03:16 PM
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Re: idle issue

The fault you have has to do with the heater element inside the O2 sensor. It can be that the heater is not working properly or not at all. You could try to measure the heater element resistance. I have no exact value for it, but when the resistance is infinite, then for sure the heater is bad. It can also be that your jeep had an o2 heater relay in the PDC, so have a look at that as well. But i wonder if a bad relay would only give one O2 sensor as fault.
Also did you use contact cleaner on the O2 sensor connector, to get rid of any oil traces, which could increase the resistance and cause the heater to draw less current.
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  #16  
Old 03-16-2015, 06:42 PM
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No,I used some throttle body cleaner that's all I had at the time...lol
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  #17  
Old 03-16-2015, 07:09 PM
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Re: idle issue

So you could try some electrical contact cleaner and spray the connectors very well. it could save you the hassle to get a new sensor.
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  #18  
Old 03-16-2015, 07:13 PM
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OK I'll do that thanks!!!
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  #19  
Old 04-09-2015, 03:18 PM
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Got the new sensor and it still doing the same thing,now can a intake leak cause it,cause I had a mechanic tell me I had a intake gasket leak,and can a bad coil pak cause it?
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  #20  
Old 04-09-2015, 08:04 PM
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Re: idle issue

An intake leak can cause idle problems, but i wonder if the idle would become erratic. Also a bad coil pack would mean no spark = no combustion = a PCM P030X fault code set ( X = cylinder number) and rough idle.
Did you do the key dance and check for eventual fault codes set? Without fault codes, it becomes a game of hit and miss and can become expensive.
Since the engine temperature seems to have influence on the problem, i wonder if there is no sensor problem. A bad crank sensor can make the engine stall when hot, but it often (not always though) sets a fault code.
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  #21  
Old 04-10-2015, 01:15 PM
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Yes I did the key dance and I got p0051 and p0302
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  #22  
Old 04-10-2015, 03:56 PM
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Re: idle issue

That the codes are (still) shown, does not mean that they are active. After a repair, the codes should be errased and then do a test drive to see if the code(s) come back.
If you plan on doing trouble shooting yourself also in the future, then a scanner would be a must have. Or if you have an android phone, then you just need a cheap ELM 327 bluetooth dongle of e-bay and the free " Torque" app to read and clear faults, but also to see many live data.
The P0302 shows that there is a misfire detected in cylinder #2. I would pull the plug and see how it looks like, or if not changed recently, just to put all new plugs in. I would also swap the coil with an other cylinder. If the coil is bad, the misfire code should follow to the cylinder where you put it on.
If still misfire on cylinder #2, then its maybe time to check the compression. There are several cases known where a rocker arm fall of, so the valve was not operating anymore. This could happen due to a bad hydraulic lash adjuster, but also due to a dropped valve seat. Was the engine overheated lately?
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  #23  
Old 04-11-2015, 05:31 PM
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Could it be the catalytic converter,I was told cause it get a certain temperature and then start acting up til it sit for about an hour or better and it runs good again til it get hot.
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  #24  
Old 04-11-2015, 06:59 PM
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Re: idle issue

I won´t suspect the catalytic converter. What can be wrong there is that it get plugged and increases the resistance in the exhaust, causing problems at higher rpm and not so temperature related.
Did you reset the fault codes and did both came back? Did you check the plugs and swap the coils?
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