how cold is too cold
I found this thread while researching my own "too cold" oddities. This week I had to take the rover on a 650 mile round trip, and the temp (according to ultragauge) stayed around 160 most of the trip. Air intake temps were between 41 & 51, but I was under the impression it wouldn't make that big of a difference. (During hotter weather it would easily get up to 200 on the highway.) At one point I got it down to 120, (but that was coasting down a mountain,) and it never went above 180. Which, coincidentally, is the thermostat I have. Also, it never went into open loop, except for a second or two occasionally that I noticed.
I did remove one of the electric fans that wasn't working. My logic being that I'd replace it once the weather warms up, and what's the point of obstructing part of the radiator in the meantime?
From what I gather, there's no harm done to the engine by its running cold, with the exception of even worse gas mileage. But I'm really curious as to why, all of a sudden, it decided to go from borderline meltdown to colder than normal?
I did remove one of the electric fans that wasn't working. My logic being that I'd replace it once the weather warms up, and what's the point of obstructing part of the radiator in the meantime?
From what I gather, there's no harm done to the engine by its running cold, with the exception of even worse gas mileage. But I'm really curious as to why, all of a sudden, it decided to go from borderline meltdown to colder than normal?
Running around town, starting/shutting the engine off will cause excessive water to build up inside the engine, rot out the exhaust, never let it go closed loop, etc.
You may have gotten a bad t-stat.
That's what I thought. Just seems odd that it would run that cold, even at highway speeds. Wouldn't the thermostat stay closed, not even circulating the coolant? (Suddenly I'm driving a Volkswagen because there's nothing but air keeping the engine cool.)
Here is my experience with the DI cooling system, it is huge and efficient.
Most t-stats start to open before they reach full temp.
The only thing I can thing of is that your t-stat was partially open and the coolant never got hot enough to open the t-stat fully.
My engine temps spike, around 210-215, then drop to around 190, then stabilize to 195.
I run a 195 t-stat.
Most t-stats start to open before they reach full temp.
The only thing I can thing of is that your t-stat was partially open and the coolant never got hot enough to open the t-stat fully.
My engine temps spike, around 210-215, then drop to around 190, then stabilize to 195.
I run a 195 t-stat.
Baja
Joined: Mar 2009
Posts: 5,736
Likes: 230
From: south n.j. and ne va.
k finaly got it running good just want to try and keep it that way 
one thing i was wondering is why does the upper hose go up so high above the radiator, the one i removed was original and it was the same way seems like a great place for an air pocket
one thing i was wondering is why does the upper hose go up so high above the radiator, the one i removed was original and it was the same way seems like a great place for an air pocket