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  #13  
Old 07-16-2015, 04:03 PM
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Re: Transmission Over Temp on 2006 Commander

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Originally Posted by Kmackk View Post
Now if I could just figure out why my gas milage is so bad
Can be several things, but i would start checking the function of the O2 sensors. Do you have a scanner? If so, check to see if the 1-1 and 2-1 sensors voltage changes from 0.2-0.8V frequently. Also check the STFT (short term fuel trim) and let us know what you find.

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  #14  
Old 07-17-2015, 10:11 AM
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Re: Transmission Over Temp on 2006 Commander

Thanks Frango,

I don't have a scanner. I'll have to get it into the shop soon. I'll let you know what they say.
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  #15  
Old 07-17-2015, 10:21 AM
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Re: Transmission Over Temp on 2006 Commander

If you have an android phone, you could buy a cheap ELM 327 bluetooth dongle from e-bay (approx USD 20) and download the free "Torque" app. You can then read fault codes, errase them and see many live data. Could safe you some money for only to get it scanned.
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  #16  
Old 10-21-2015, 06:42 PM
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Re: Transmission Over Temp on 2006 Commander

Quote:
Originally Posted by Frango100 View Post
Can be several things, but i would start checking the function of the O2 sensors. Do you have a scanner? If so, check to see if the 1-1 and 2-1 sensors voltage changes from 0.2-0.8V frequently. Also check the STFT (short term fuel trim) and let us know what you find.

I know, I know , it's been awhile I had my mechanic
check it out, and he said he can find no codes, nothing wrong.

Does anyone else have this vehicle and can share their mileage? Mine is an 06 Jeep Commander 4x4 with the 4.7, 170,000 miles. Maybe they all get low mileage.

It is in the shop now with two broken exhaust manifold bolts.
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  #17  
Old 10-23-2015, 09:23 AM
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Re: Transmission Over Temp on 2006 Commander

I have the same and get 14 city 21 highway with a lift and large tires


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Old 06-22-2016, 09:18 AM
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Re: Transmission Over Temp on 2006 Commander

I have a jeep commander 4x4 with 5.7 hemi. My milage is also not very good bout 14 city and 20ish hwy all stock stock tires. And I'm also having the over temp issue at 130,*** miles. Did anyone ever get there problem resolved?
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Old 04-19-2017, 12:49 PM
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Smile Re: Transmission over Temp 2006 Jeep Cherokee

Check your pinion bearings. Our Jeep developed a humming noise while driving. A mechanic told us the pinion bearing was going out. Since the bearing was replaced haven't got the Transmission Over Temp message.
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Old 04-20-2017, 08:18 PM
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I know this is kinda old but I thought I would give a hint on where to start. I have a 2005 Jeep Grand Cherokee with the 5.7l in it and was getting transmission over temp every once and a while with a high cooling fan. I changed the fluid in the transmission and changer the dilters. That did not fix the issue. I then had the solenoid pack and again change the fluid and filter and after they pulled it out of the garage it tot me again. Comes to find out the fault was in the PCM which was replaced and the issue was resolved. Also I'm not saying there is a recall on your vehicle but I know the 2006 and up PCM's were recalled at some point for some issue.
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  #21  
Old 04-21-2017, 05:50 AM
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Re: Transmission Over Temp on 2006 Commander

I have come across similar issues with 545RFE's in other Chrysler products. Here is one test you can try. When the code pops up, shut the vehicle off and restart and see if the problem immediatly goes away. I have a lot of false overtemp codes on these units. The bad news is, it usually requires a pcm replacement to fix it. Any other questions, please feel free to ask me,

Bob Perry
Fisher Transmission
Fairfield, NJ
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