Jeepineasy

jeep is strictly a offroad truck but it will not stop over heating. I have a brand new csf 3 row radiator, dirtbound 3 electric fans, new hoses,thermostat, and hood vents. only thing not new is the water pump

what should I do?

belvedere

Flush the system thoroughly. Since you haven't replaced the pump, remove it and flush. Then you can check the condition of the impellers, but if it were me, I'd just put a rebuilt pump on. Also, what brand of thermostat did you use?

docmedpros

during your flush, make sure to flush and back flush both cooling components and the engine, and do not forget the heater core. I was having the same issue and this solved it for me

Jeepineasy

I removed the water pump and inspected it, everything looked in great shape. geater core is bypased

jmrec100

Does it have an electric fan? I had an issue with my wife's Honda. Found out the main electric fan was not working. It worked sometimes and not other times. Found out by popping the hood and turning on the AC. Both of the fans should come on. The main fan didn't. Tapped it and it ran. I know my Cherokee has an electric fan. And I check it often.
Just a thought.

Big David

Could be a air bubble.

Radi

If it doesn't overheat on the highway, only at low speeds your fans are likely insufficient.

Jeepineasy

jeep doesn't go on the highway its a trailered rig

I have the dirtbound 3 electric fan kit so I don't thing fans are an issue

Nakedginger

Two things that have helped me on the trails, especially on hot days, were putting in a Hesco High Flow water pump and installing a overflow tank (puke tank) coming off of the pressurized overflow reservoir. You also want to make sure your antifreeze levels are in check.

in the upper left corner is an example of the puke tank I am referring to. This allows your water system to expand and contract without sucking air in.



With these mods, along with hood vents, I now run around 190-200 degrees most of the time.

Rock Toy

One thing I've seen over looked a lot is mud caked in the radiator and transmission cooling fins. You didn't make any statement as to type of transmission or whether or not you have an aux. cooler or if you have a trans temp gauge.

Bustedback

No mention of the radiator cap. A bad cap will lower the boiling point.

belvedere

This is a good point. Also, see my question in post #2.

Jeepineasy

I converted to the open style cooling system. rad is so new I havnt even gotten it dirty, I have a power steering cooler and tranny cooler that are perfectly clean too. I Really don't think I should have this many problems cooling.

When I put the new rad in I deleted the ac condenser also

Turbo X_J

If it was fine before go back, could be that radiator & fan setup is bogus.

Gimmy

Just a thought, but are your fans spinning the right direction for how you have them mounted? if not then swap the wires.