Dr4Film Posted September 23, 2022 Share Posted September 23, 2022 Jim, I came to the same conclusion as you regarding the transmission cooler in the CG&J radiator. The temps with the original radiator were always lower then after the new radiator was installed in 2015. Not impressed with CG&J at all. Their reputation is overblown in my opinion. Link to comment Share on other sites More sharing options...
jacwjames Posted September 23, 2022 Author Share Posted September 23, 2022 I was even less impressed after I reached out to them with the problem and they had no real explanation with only the offer to sell me a separate cooler for $700, this is the price listed on the website so not even a "sorry, lets try and fix this by giving a discount" Link to comment Share on other sites More sharing options...
Mike B in TN Posted September 24, 2022 Share Posted September 24, 2022 Glad you found a fix, and a big thank you for coming back and letting us know how it turned out. 👍🏻 Link to comment Share on other sites More sharing options...
tomgagne55 Posted September 24, 2022 Share Posted September 24, 2022 Related question not worthy of new post. Are there typically 2 transmission temp sensors on Monaco’s? One for the ECM and one for the gauge. I know this is true for the oil pressure readings. I have a 2002 diplomat 330 ISC Link to comment Share on other sites More sharing options...
Ivan K Posted September 24, 2022 Share Posted September 24, 2022 1 hour ago, tomgagne55 said: Related question not worthy of new post. Are there typically 2 transmission temp sensors on Monaco’s? One for the ECM and one for the gauge. I know this is true for the oil pressure readings. I have a 2002 diplomat 330 ISC This is true in my case. One internal sensor and a gauge sensor at outlet port to cooler. Link to comment Share on other sites More sharing options...
timaz996 Posted September 24, 2022 Share Posted September 24, 2022 After reading this whole post, I'm glad I have a separate trans cooler from the radiator from the factory. I have no engine or trans temp problems even in 100+ ambient temps. (which sense going fulltime I don't see anymore} Actually 180F is a good temp for your engine and your trans to see. This is the point where moister is burned off in the oils. Link to comment Share on other sites More sharing options...
jacwjames Posted September 24, 2022 Author Share Posted September 24, 2022 4 hours ago, tomgagne55 said: Related question not worthy of new post. Are there typically 2 transmission temp sensors on Monaco’s? One for the ECM and one for the gauge. I know this is true for the oil pressure readings. I have a 2002 diplomat 330 ISC On my coach Monaco installed separate sensors for Transmission Oil Temp, Engine Oil Pressure, and Engine coolant temp. These all provide the signals to the dash gauges. Cummins installed their own sensors for these and other inputs to the ECM. 1 Link to comment Share on other sites More sharing options...
Greg G Posted September 25, 2022 Share Posted September 25, 2022 Anyone looking for a factory radiator replacement should check out Radiator Supply House out in Oregon. They made a brass replacement for the aluminum one that cracked in my 06 Navigator. It has served me well. https://radiatorsupplyhouse.com/pages/search-results-page?q=Monaco Link to comment Share on other sites More sharing options...
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