Re: 2004 hydraulic fan noise
The shop in KY had it from Saturday til Tuesday.. Really found nothing to speak of. They checked with Chrysler who reported problems with aftermarket thermostats so I went along with the change for lack of anything else to try. They never were able to duplicate the problem. They drove it over 20 miles and left it running for hours.
I asked them about the radiator cap and also if the Dexcool I used was an acceptable coolant. Prestone Dexcool was said to be as good or better then the required coolant.
They did say that they checked the temp sensor and it was spot on.
They also said something to the effect that the radiator showed different temperatures at differernt sides and that supported the thermostat potential. I don't really see how that supports the thermostat as a problem.
Anyway, my wife picked it up and paid the 180ish bill for troubleshooting and thermostat replacement. She is not driving home until Friday so I won't know anything else before then..
Thanks for checking back.. I will update as I know more.
2004 Jeep Grand Cherokee Laredo WJ
4x4, Quadra Trac II, 4.7 V8
NV247 Transfer case.
Dana 30 front, Dana 44 rear
Michelin LTX MS/2