AlbatrossCafe Posted September 17, 2018 Share Posted September 17, 2018 (edited) I recently re-routed some coolant lines on my L28ET. On the passenger side of the engine, I removed a 3-way bypass valve and 3-way fitting out of the rear of the engine and replaced it with a 2-way valve at the rear of the engine. I have seen other engines like this and read it would be OK as long as I don't go crazy while the engine is still cold. Problem: After the engine is warm, the Temp gauge sits PEGGED at 250 degrees while driving. I was initially very concerned, but what I noticed is that while idling, it goes back down to it's normal operating range of 180 degrees! As I move, it climbs again (fairly rapidly). My gauge was working fine before I re-routed my coolant hoses. Also, my heater works so I know coolant is flowing through there. Where is this temp gauge? Is it absorbing hot hair from somewhere else? Any ideas why this might be happening? Here is how I re-routed my lines. From this: To this: Edited September 17, 2018 by AlbatrossCafe Quote Link to comment Share on other sites More sharing options...
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