[Ske41780]

Hi, I’m new to the community and wanted to post about my problems with my commander.
I have a 2006 commander limited 5.7.
my hydraulic cooling fan was only running 100 to 500 rpm because the solenoid was not engaging. I replaced the power steering pump, power steering lines, coolant temp sensor, solenoid, whole fan assembly, fcm, tipm. After replacing all of this my solenoid was still not engaging. I used an autel 708 to manually engage the solenoid for the cooling fan and it worked so the pcm, fcm and tipm was functioning. I then proceeded to reset all computers with the autel and when I was resetting the pcm it gave me an error halfway through that it could not reset.
I have been at a loss for 3 months.
I finally decided to buy a universal thermostat, run one terminal grounded to the frame and the other terminal i tapped into the middle wire that was not hot or ground. It Worked like a charm. When it reached temp it completed the ground circuit and engaged the solenoid.
no more overheating and my next step is to connect a relay to the same wire and ac compressor relay it will engage when my ac is turned on.

 

[bblickle]

It's cool you found a solution and your Jeep isn't overheating anymore. Is your fan running at full blast though? I don't think I could live with mine sounding like there's a Cessna hiding under the hood.

 

[Ske41780]

It only runs full blast when the temp reaches 200 Degrees and if I get my pcm reset and find the real reason for the fcm not controlling the solenoid properly I dont have to make any drastic changes to what I did.

 

[bblickle]

Have you put in a cooler thermostat to give yourself a little more buffer? You seem knowledgeable, you probably already did that but it seemed worth mentioning.

 

[Ske41780]

Have you put in a cooler thermostat to give yourself a little more buffer? You seem knowledgeable, you probably already did that but it seemed worth mentioning.

I was going to button would lose a lot of gas mileage running the engine cooler. The best gas mileage and running conditions of the 5.7 is a 203 degree thermostat. I used the mopar oe and used a universal 185 degree thermostat connected to the open wire. I put the thermostat on the inside of the radiator between the edge of the shroud where there was the least amount of air passthrough.

 

[Bhooper85]

Hi, I’m new to the community and wanted to post about my problems with my commander.
I have a 2006 commander limited 5.7.
my hydraulic cooling fan was only running 100 to 500 rpm because the solenoid was not engaging. I replaced the power steering pump, power steering lines, coolant temp sensor, solenoid, whole fan assembly, fcm, tipm. After replacing all of this my solenoid was still not engaging. I used an autel 708 to manually engage the solenoid for the cooling fan and it worked so the pcm, fcm and tipm was functioning. I then proceeded to reset all computers with the autel and when I was resetting the pcm it gave me an error halfway through that it could not reset.
I have been at a loss for 3 months.
I finally decided to buy a universal thermostat, run one terminal grounded to the frame and the other terminal i tapped into the middle wire that was not hot or ground. It Worked like a charm. When it reached temp it completed the ground circuit and engaged the solenoid.
no more overheating and my next step is to connect a relay to the same wire and ac compressor relay it will engage when my ac is turned on.

 

[Bhooper85]

I think Im having a similar issue what wires did you ground and tap into ?

 

[Bhooper85]

Hi, I’m new to the community and wanted to post about my problems with my commander.
I have a 2006 commander limited 5.7.
my hydraulic cooling fan was only running 100 to 500 rpm because the solenoid was not engaging. I replaced the power steering pump, power steering lines, coolant temp sensor, solenoid, whole fan assembly, fcm, tipm. After replacing all of this my solenoid was still not engaging. I used an autel 708 to manually engage the solenoid for the cooling fan and it worked so the pcm, fcm and tipm was functioning. I then proceeded to reset all computers with the autel and when I was resetting the pcm it gave me an error halfway through that it could not reset.
I have been at a loss for 3 months.
I finally decided to buy a universal thermostat, run one terminal grounded to the frame and the other terminal i tapped into the middle wire that was not hot or ground. It Worked like a charm. When it reached temp it completed the ground circuit and engaged the solenoid.
no more overheating and my next step is to connect a relay to the same wire and ac compressor relay it will engage when my ac is turned on.

Which wires did you tap into

 

[rblapham]

@Bhooper85
Welcome to the forum. Please read this and fill in some of your details and make a signature with your Commander details. (year, model trim, engine, 4wd system, etc.) It is nice for us know what your Commander has in it so we can better help you.

NEW MEMBER REQUIRED READING!!! Important New Member information, Forum requirements & Forum rules. | Jeep Commander Forum

To make a Signature click here - Signature - How to make or modify

To get the list of everything built into your Commander when built at the factory - have your VIN number (case sensitive) and go here Chrysler Build sheet - Equipment Listing Not necessarily for your signature but so you know what you have.

Also post an introduction in the "New Member" section. New Member Section

You can download a free Owner's Manual here--->Owner's Manual