Hi:
I am troubleshooting a 2007 WK Diesel with a non spinning Hydraulic fan. I can not get the fan to kick in turn on, or move at all actually. I am guessing solenoid is blocked or dead. Anybody have any experience with this on a WK Hemi or CRD? I have read a lot on the WJ threads, but it is a little different than the WK hydraulic cooling fan.
I have done a few checks of three wire connector going to solenoid, and I get voltage on all three. About 14.4 volts on ground and hot, and then less than a volt range fluctuating on the other wire and ground, which I guess is the Pulse Width Modulation.
Not sure what acceptable range is here, and of course it varies based on input form transmission, AC and engine temp.
One thing I did succeed in today was to "build a special wrench" to remove the solenoid with.
I converted a large unused wrench to the needed 23 mm by 5 mm thick in order to fit in between the hydraulic pump assembly, and the solenoid body. Worked like a charm as there is a lot of space between fan and engine. I put an oil drain pan underneath to catch the drip, which was not too much. maybe a few ounces.
I know there are similar cooling system elated threads, but I have been searching for some time and not seen anything related to how to test, fix, or deal with this issue, let alone pictures of this solenoid. If you know of any pease point me in that direction.
I am troubleshooting a 2007 WK Diesel with a non spinning Hydraulic fan. I can not get the fan to kick in turn on, or move at all actually. I am guessing solenoid is blocked or dead. Anybody have any experience with this on a WK Hemi or CRD? I have read a lot on the WJ threads, but it is a little different than the WK hydraulic cooling fan.
I have done a few checks of three wire connector going to solenoid, and I get voltage on all three. About 14.4 volts on ground and hot, and then less than a volt range fluctuating on the other wire and ground, which I guess is the Pulse Width Modulation.
Not sure what acceptable range is here, and of course it varies based on input form transmission, AC and engine temp.
One thing I did succeed in today was to "build a special wrench" to remove the solenoid with.
I converted a large unused wrench to the needed 23 mm by 5 mm thick in order to fit in between the hydraulic pump assembly, and the solenoid body. Worked like a charm as there is a lot of space between fan and engine. I put an oil drain pan underneath to catch the drip, which was not too much. maybe a few ounces.
I know there are similar cooling system elated threads, but I have been searching for some time and not seen anything related to how to test, fix, or deal with this issue, let alone pictures of this solenoid. If you know of any pease point me in that direction.