Running hot on highway

[Roxtar]

I've just changed my cooling system to a CSF 3 row radiator, two 12" Zirgo electric fans mounted to an aluminum shroud, and a large (12" X 15") trans cooler. Everything seems fine except on the highway. At highway speeds the temp climbs up to around 215 degrees. The only thing I can think of is that I might be using too large a trans cooler and between that and the AC condensor I might be blocking too much of the radiator. Any other possible ideas?

 

[fasty]

How much did you put in the anti-freeze and the distilled water?

I am running CSF 3 rows on my jeep and living in very hot climate weather desert rural area. I use 70% water distilled and 30% antifreeze with redline water wetter. It worked great and very outcooled. I went offroad trail at Big Bear John Bull last saturday. It went up 215F but when i turn on electric aux fan. it went back to 200F all way.

 

[Roxtar]

How much did you put in the anti-freeze and the distilled water?

I am running CSF 3 rows on my jeep and living in very hot climate weather desert rural area. I use 70% water distilled and 30% antifreeze with redline water wetter. It worked great and very outcooled. I went offroad trail at Big Bear John Bull last saturday. It went up 215F but when i turn on electric aux fan. it went back to 200F all way.

I'm probably closer to 50-50. I'll be trying water wetter soon.

 

[fasty]

I tried 50-50% and it doesnt help at all. I went 70% distilled and 30% antifreeze with redline water wetter worked very well.

 

[JCSXJ]

Just pop the hood but leave the saftey latch latched :looney:

 

[woody]

Did you clean out the condenser while you had it apart??? It's been catching bugs now for 5 years...

215 stable in the summertime isn't bad for a 4.0l... did you divorce the tranny fluid from the radiator completely, or just add in the cooler?

I'm going through my 88's pesky cooling system & converting to open...hopefully this weekend.

 

[Roxtar]

Did you clean out the condenser while you had it apart??? It's been catching bugs now for 5 years...

215 stable in the summertime isn't bad for a 4.0l... did you divorce the tranny fluid from the radiator completely, or just add in the cooler?

I'm going through my 88's pesky cooling system & converting to open...hopefully this weekend.

Condenser is clean. added the trans cooler in line after radiator (I wanted to add more trans cooling, not just trade one for another).
215 isn't bad, just higher than I'd like. It's just strange that it only gets up there at highway speeds where things usually cool off, if anything.