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Temperature drop on radiator
Posted to Technical Discussion Forum on 9/26/2016 20 Replies

Hello all We did head gaskets on this Dodge and while taking it out for a test drive after the repair the following happens. If I drive 60 mph temp stays at 210F but I if drive it 75/80 MPH it will get hot really quickly. I can have it idle for 20 minutes and temperature stays fine. But I took some FLIR shots and the temperature drop on the radiator seems really small. This vehicle has the thermostat at the lower hose. Is the radiator the culprit ? When I took the pictures I revved the engine at 2200 rpm

[2002 Dodge Ram 1500 ST, Engine/Propulsion Photo] [2002 Dodge Ram 1500 ST, Engine/Propulsion Photo] Rik

Rik Alleman
Parts Specialist/Owner
Nootdorp, Netherlands

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car Vehicle Data

2002 Dodge Ram 1500 ST 4.7L

Engine4.7 L
Trans4-speed Automatic (Electronic)