2009 Dodge ram 1500 5.7 Operating Temp Issue

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Emerica1232

Junior Member
Joined
Mar 27, 2022
Posts
7
Reaction score
2
Location
Michigan
Ram Year
2009
Engine
hemi 5.7
2009 Dodge ram 1500 5.7

Having issue with truck getting to operator temperature. Truck would only get up to around 180-184 degrees F since i bought it in March of this year.

Have replaced coolant temp sensor, and thermostat, used spill proof funnel on radiator to bleed any air out of system, but truck will not get any hotter than 180 degrees currently. the thermostat i installed is stock 203 degree thermostat. I have been getting CEL that come on every so often (p1128 & p1129, closed loop fueling not achieved bank 1 & bank 2). truck has also had issue starting now that the weather is getting colder sometimes. Any help/info on this would be greatly appreciated!
 

BigRed06

Junior Member
Joined
Nov 7, 2021
Posts
13
Reaction score
6
Location
Fremont, CA
Ram Year
2006
Engine
5.7
I've never run into that issue before, but check the Thermostat and your new temp sensor. I have run my 06 at 180, 203 and 193 degrees without an issue.
 
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