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Topic: 03 Intrigue, 400 ISL cummins my heat gauge is moving much more this (Read 863 times) previous topic - next topic
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03 Intrigue, 400 ISL cummins my heat gauge is moving much more this

Yahoo Message Number: 88232
Hello Trying to get some ideas as to why my heat gauge is moving much more than normal. A year ago I had a new thermostat installed and noticed last year heat stayed in the 182 to 188 range. My coach has approx 60,000 miles flushed out the cooling system approx 55,000 miles with the new thermostat. Now the temp range is from 188 to 200 degrees moving much faster up and down. I am nervous about a really steep climb.
In the past year coolant loss approx 2 quarts.
I am starting to wonder if maybe my radiator might be plugged but not sure what other things might cause this maybe a cooling fan not working properly maybe sending unit?
Hate to spend the bucks to have the radiator removed and cleaned and find out something different. I am avoiding my usual Siskiyou route not wanting to really overheating my 400 ISL.
Curious to find out your ideas on where to go in finding out what is going on with the cooling. What are temperature ranges on your cummins?

Thanks for your help

Gerald Brawley 03 Intrigue 11651

Re: 03 Intrigue, 400 ISL cummins my heat gauge is moving much more t

Reply #1 –
Yahoo Message Number: 88235
With temps in the 182-188 range, it sounds like you have a problem with the fan controller. Normal range is in the 195-200 range. My fan goes to high when the temp registers 199 on the Silverleaf and temp will drop to 195.
If you are referencing the dash gauge, there could be an error of 20%. 10 for the gauge and 10 for the sending unit.
With the temp in the 180 range, the motor is not at operating temperature and you are burning fuel efficiently.

Don

'02 Intrigue #11427
'02 Intrigue #11427

Re: 03 Intrigue, 400 ISL cummins my heat gauge is moving much more t

Reply #2 –
Yahoo Message Number: 88239
I had two issues, the first was the fan controller and after 3 units finally got one to work. My temps would approach 208 and then suddenly drop to 180 to to 175 degrees and then return to normal, only to climb again. The second issue was the radiator, which allowed coolant to pollute the transmission fluid and vive versa causing the transmission temp to wander in just the operate direction of the engine, when they should track together. Good thing I had transynd in there or I would have lost a transmission costing big bucks.
TWI 2004 Intrigue 11731.

Re: 03 Intrigue, 400 ISL cummins my heat gauge is moving much more t

Reply #3 –
Yahoo Message Number: 88243
I wonder how they check the radiator for circulation. I used to work on cars and you would place your hand over the coils and feel the temps for cool spots. With a RV hard to check it out that way. But I know they have those electronic surface thermometers. Do you know how they checked your radiator?
 

Re: 03 Intrigue, 400 ISL cummins my heat gauge is moving much more t

Reply #4 –
Yahoo Message Number: 88245
It was easy they dropped the pan on the tranny and saw all the coolant mixed with the transmission fluid. As my problem was a warning light from the transmission and the fact when you took the transmission dipstick out the fluid had a milky look instead of a brite red or orangish red color..
TWI 2004 Intrigue 11731