Coolant temp

[Ksilva211]

Not sure if anyone has paid attention to this or not but my coolant temp jumps a lot when I first get in and start driving. Like from 105-160 in a couple seconds. Then while driving normally it will fluctuate from 195-220 pretty quick. Is this normal?

 

[Flot]

Not sure if anyone has paid attention to this or not but my coolant temp jumps a lot when I first get in and start driving. Like from 105-160 in a couple seconds. Then while driving normally it will fluctuate from 195-220 pretty quick. Is this normal?

Not normal on the previous gen, although that first jump could just be the thermostat opening up. . To be that sounds like you may have an air bubble in the system/coolant low? Mayb they relocated the sensor which is causing more unusual readings.

 

[Ksilva211]

I feel like 220 is very high for a coolant temp? Does anyone know what normal operating temp is on these things?

 

[I Love Grits]

I feel like 220 is very high for a coolant temp? Does anyone know what normal operating temp is on these things?

Quick google search shows consensus is from high 190s to low 220s with the truck unloaded (for previous gen 5.7L).

 

[Ksilva211]

I think there may be air in my cooling system. I usually remote start the truck but today I got in and started it and it sounded like water running behind dash. I’m guessing into heater core. I’m not sure how to bleed this system or even check the coolant level? The overflow bottle is black and hidden behind plastics. Any ideas? Dont want to be running this thing low on coolant

 

[Jared B]

I checked on that Limited and it seemed to be between 202-218 ish.

 

[firecadet613]

I think there may be air in my cooling system. I usually remote start the truck but today I got in and started it and it sounded like water running behind dash. I’m guessing into heater core. I’m not sure how to bleed this system or even check the coolant level? The overflow bottle is black and hidden behind plastics. Any ideas? Dont want to be running this thing low on coolant

Pop the cap on the overflow bottle. I've seen a plastic dipstick on some in the past.... not sure if the Ram has one or not.

 

[Jared B]

I think there may be air in my cooling system. I usually remote start the truck but today I got in and started it and it sounded like water running behind dash. I’m guessing into heater core. I’m not sure how to bleed this system or even check the coolant level? The overflow bottle is black and hidden behind plastics. Any ideas? Dont want to be running this thing low on coolant

@firecadet613 is correct, if you pop the cap there is a dipstick for the coolant level in the bottle.

 

[alacombe]

I think there may be air in my cooling system. I usually remote start the truck but today I got in and started it and it sounded like water running behind dash. I’m guessing into heater core. I’m not sure how to bleed this system or even check the coolant level? The overflow bottle is black and hidden behind plastics. Any ideas? Dont want to be running this thing low on coolant

bring it to the dealer? its under warranty

 

[Ksilva211]

Thanks guys it does have a dipstick. Never even thought to look for that. Most vehicles just have a clear bottle with lines

 

[NortherLee]

Had my wife write down some numbers for KSIL211 while we were out driving our 2019 Ram. It's a 4x4 with the 5.7L hemi, auto trans, and 3.21 rear end. We had three 100 Lb. bales of hay in the bed, driving uphill at 35 MPH. Time of day was 18:45, humidity ~50%, and ambient air temp was 75° F. Round trip to feed store was 15 miles. Ram was fully at normal operating temp. The numbers were observed during the last 5 miles of our trip.Coolant Temp: 206° F (did not fluctuate more than 2° F for 5 miles)Transmission Temp: 183° F (held steady)Oil Temp: 212° F (varied about the same as coolant temp over 5 miles)Oil Pressure: 52 PSI at any speed above idle during drive. (48 PSI near idle)

 

[Ksilva211]

thanks for the update! It’s good to have something to compare my trucks numbers to. Also a little update on this I went back to the dealer and I had air in the system apparently. Not sure how or why but it seems to be better now but it’s only been a few days.

 

[Mjben1977]

Not sure if anyone has paid attention to this or not but my coolant temp jumps a lot when I first get in and start driving. Like from 105-160 in a couple seconds. Then while driving normally it will fluctuate from 195-220 pretty quick. Is this normal?

This is normal with the 2019..... I test drove several after I bought mine to check it out.

 

[Mjben1977]

I feel like 220 is very high for a coolant temp? Does anyone know what normal operating temp is on these things?

203-225 is normal for my 2019.

 

[Mjben1977]

Bleed air from system for about 20 mins, "Run engine with radiator cap off" once up to temp. Test drove for an hour. 20 mins on highway 65-80 mph, temp 203-206 deg F, 20 mins in city 212-215 deg F. Better than the wild swings before 203-225 deg F.

 

[firecadet613]

Bleed air from system for about 20 mins, "Run engine with radiator cap off" once up to temp. Test drove for an hour. 20 mins on highway 65-80 mph, temp 203-206 deg F, 20 mins in city 212-215 deg F. Better than the wild swings before 203-225 deg F.

Did you just take the cap off and start it up? I've seen in the past when doing this it'll burp out a lot of coolant.

Stuck in traffic for a bit today then grabbed my boat to bring it home from the cover shop and it was 224-226 for a while. Didn't look at the regular gauge to see how far up it moved though.

 

[Mjben1977]

Yes you will lose some coolant but the reservoir was overfilled anyway and will make up for it.

 

[Ickabod]

 

[Mjben1977]

View attachment 2093

While engine is cold, remove radiator cap, start engine, let warm up , then turn on heater. Run engine until you stop see bubbles or 212 degrees to keep causing a boil over. you may have to repeat. Or have the dealer do it under warranty.