Fluctuating Engine Temp
#1
Fluctuating Engine Temp
The engine temp on my rig is fluctuating between 190* and probably 215*. The coolant is full and the radiator is clean. I replaced the thermostat and fan clutch last June, now the only other thing I can think of is a bad sending unit. Can anyone tell me what I need to do or replace to get it running back where it should? Thanks
#3
#4
#5
Do yourself a favor and get the stat from Cummins. Dont rely on a parts store for this item.
#7
So far, Only the factory units seem to be holding up for me.
Dave
#8
Bad Cap...
Bad T-stat - I replace my t-stat every time I cahange coolant which happen to be every spring. So I normally don't see coolant system problems...
Or you got air trapped up in the coolant system yet... I typically se wild temp swings for about 1-2 days till all the air comes out of the coolant system. Usually see a fall in the level of the coolant in the bottle for about 2-3 days and quits...
Bad T-stat - I replace my t-stat every time I cahange coolant which happen to be every spring. So I normally don't see coolant system problems...
Or you got air trapped up in the coolant system yet... I typically se wild temp swings for about 1-2 days till all the air comes out of the coolant system. Usually see a fall in the level of the coolant in the bottle for about 2-3 days and quits...
#9
#10
in the fall I cleaned out the radiator core with carb and choke cleaner and blew out all the guts and caked oil. towards the bottom of the block on the drivers side the little tube for oil blow by is a little short but there is no bottle at the end of it. Should I put an extension on the tube so oil doesn't blow all on the block? I did notice the fan blades are a little caked too. The temp swings first happened when I had about a 5k pound load on going to east Texas. When I left it was normal but on the way back I noticed the higher temps. It doesn't boil over and my mileage hasn't changed so I don't think its running hot enough to hurt anything but I don't like it running hotter than it should.