Stant or Gates Thermostat, any issues with these two brands?...'99 CTD

 

Ive been reading the thermostat threads about some crappy thermostats and temp swing issues etc

 

 

 

 

I see way too much of blaming the thermostat too quickly as for the cause of overheat. Like out here radiator plugging externally and internally is very common. Either from mud or dirt road travel. I see this even on 3rd Gen trucks. Matter of fact the last one I worked on attempting to correct a overheat was @Taz between the radiator face being plugged up and the electric fand clutch being bad. You could easily blamed the thermostat. Most do because they are cheap and easy to change compared to pulling a radiator to clean it or replacing a fan clutch. 

Yes there are other cooling system issues, but replacing a "x" brand thermostat with a Cummins one won't fix them. Quite often getting rid of a non-Cummins thermostat fixes the issue, and that means the issue was the thermostat. 

 

Overheating isn't the primary complaint I hear about with non-OEM thermostats. It's inconsistent temps, slow to open, slow to heat, etc. 

I should expand on my previous statement on the Cummins 180 I had. My temps were swinging with and with out the Cummins. Mine was definitely not the t stat.

Living in the S/W desert we never used thermostats. You remove them and throw them in the trash

 

That was before they started over-complicating vehicles with computers, sensors, and check engine lights

2 hours ago, GSP7 said:

Living in the S/W desert we never used thermostats. You remove them and throw them in the trash

 

That was before they started over-complicating vehicles with computers, sensors, and check engine lights

 

You could do that with a gas engine, but not with a diesel. 

 

Even at 15K GCW my thermostat would only fully open a small handful of times a year! At 19K it opens more often, but even still the motor would never get to operating temp without one even loaded. 

 

Last summer I pulled a 6% grade for several miles at 114° out. I was empty and my thermostat never fully opened. It takes a lot of sustained power to need a full open thermostat. 

Edited December 25, 20177 yr by AH64ID

I got the* Stant 13479 for a 12v. It does not have the jiggle pin or pins. I seemed to have gotten them both ways over the years. I a going to stick it in later and see what it does around town before hitting the highway with it.