Engine temp gauge cycles
03-10-2003, 04:54 PM
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Engine temp gauge cycles
I just bought a new to me 97 2500 CDT (I'm new to the Dodge trucks, too) and have a question about the engine temp gauge behavior. As it warms up, the gauge comes up to the start of the normal range mark (guessing around 150; 140 is marked) and then up to the middle of the normal range (again, guessing around 180; 190 is marked). In normal driving, the needle drops to 140, then climbs back to 180 every few minutes for no obvious reason. It takes maybe a minute to drop and then climb back up again. Is this gauge a direct-read, or just another "idiot light with a needle" deal?
Any ideas?
Thanks.
Greg
Any ideas?
Thanks.
Greg
03-10-2003, 05:00 PM
#2
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Re:Engine temp gauge cycles
It's an electrical guage and sounds as if it is working properly. The cooling systems are so large on our trucks and I believe they are setup to operate this way.My truck has done so since new.
03-10-2003, 05:07 PM
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Re:Engine temp gauge cycles
Its normal for these cummins thermostats to cycle between 145-190<br>there is a cummins stat that doesn't cycle as much I don't have the part # handy
03-10-2003, 05:32 PM
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Re:Engine temp gauge cycles
Since the thermostat seems to cycle between 150 and 180, would I most likely have a 150 thermostat, a 180, or something else?
Thanks.
Greg
Thanks.
Greg
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