2G Rad fan coming on late

[Rancho]

I have a 1995 talon tsi. Mostly stock besides a 16g.

Bought the car, ran new rear brake lines, fixed a massive oil leak in the flex turbo oil return, added a new coolant reservoir, and some other odds and ends.

Pretty suddenly the car started heating up at stops so I checked if the rad fan was working. Being a 2g, turning on the AC doesn’t tell you much about the radiator fans condition.

I pulled the coolant temp sensor plug out and both fans came on instantly. I bought a new coolant temp sensor (2 wire) and the same thing happens https://speedtest.vet/ https://vidmate.bid/.

I let the temp get higher than I previously would with the car idling in my driveway and the rad fan kicked in at about 3/4 ways to the top of the temp gauge. It cools to halfway and the fan goes off. Ithe temp then goes to 3/4 the fan kicks on and goes back to half way. It repeats this pattern indefinitely.

Long story short the rad fan works, but it’s definitely kicking on at a higher temp than it should...

Any help would be appreciated.

 

[DSMPT]

I have a 1995 talon tsi. Mostly stock besides a 16g.

Bought the car, ran new rear brake lines, fixed a massive oil leak in the flex turbo oil return, added a new coolant reservoir, and some other odds and ends.

Pretty suddenly the car started heating up at stops so I checked if the rad fan was working. Being a 2g, turning on the AC doesn’t tell you much about the radiator fans condition.

I pulled the coolant temp sensor plug out and both fans came on instantly. I bought a new coolant temp sensor (2 wire) and the same thing happens https://speedtest.vet/ https://vidmate.bid/.

I let the temp get higher than I previously would with the car idling in my driveway and the rad fan kicked in at about 3/4 ways to the top of the temp gauge. It cools to halfway and the fan goes off. Ithe temp then goes to 3/4 the fan kicks on and goes back to half way. It repeats this pattern indefinitely.

Long story short the rad fan works, but it’s definitely kicking on at a higher temp than it should...

Any help would be appreciated.

Since the fan turns on, I guess the coolant temp is the one rises quicker than usual. Should inspect the thermostat and replace it if necessary.

 

[spyderdrifter]

Have you burped the cooling system? Sounds like some air trapped in there.