I monitor coolant temperature from the computer with a ScanGauge.

Warm up takes a long time, at least 15 minutes, and it struggles to hold 82°C (180°F), with ambient just above freezing.

In my 2007 4.0 litre Ranger I'm sure it warmed up quicker and easily held 88°C (190°F).

If anybody else is monitoring coolant temperature in a late model Ranger please tell me what you are seeing.

Does anybody have the specs of the OE thermostat, or temperature information from the shop manual?

Thanks.

 

Nobody has an answer?

 

my 01 stays right around 180-188 f

 

My 2011 is the same way right now -10 out and it will not get to operating temp just idling. But then I don't think begin double lift and no gap guards or anything covering the bumper gap hole doesn't help too.

 

My '07 4.0L used to always hold 190-192ish ... didn't seem to matter much what the temp was outside.

 

well stock thermo on my 02 is 194, thats also what it says on the actual thermo, prolly just need to replace it, its pretty easy.

 

I get mine up to operating temp within my 10 minute commute to work. Part way is 70kms/h and the other part is 100+kms/h. It easily holds @ 195 degrees when it gets there. I bet there is something wrong with your thermo. I use an ultra gauge for my monitoring needs and am 3 years older of a model.

 

I tried to get it replaced under warranty, but the tech writer wasn't interested, wanted it to throw a CEL, and mumbled something about 79°C (174°F).

Anybody with a shop manual know what are the conditions to throw a coolant low temperature CEL?

I know that for my other car that CEL involves both low temperature and time and repetition.

 

The coolant drain is on the bottom of the rad...